---
_id: '59510'
abstract:
- lang: eng
  text: <jats:p>The use of organo-catalysis in continuous-flow reactor systems is
    gaining attention in medicinal chemistry due to its cost-effectiveness and reduced
    chemical waste. In this study, bioactive curcumin (CUM) derivatives were synthesized
    in a continuously operated microfluidic reactor (MFR), using piperidine-based
    polymeric networks as catalysts. Piperidine methacrylate and piperidine acrylate
    were synthesized and subsequently copolymerized with complementary monomers (MMA
    or DMAA) and crosslinkers (EGDMA or MBAM) via photopolymerization, yielding different
    polymeric networks. Initially, batch reactions were optimized for the organo-catalytic
    Knoevenagel condensation between CUM and 4-nitrobenzaldehyde, under various conditions,
    in the presence of polymer networks. Conversion was assessed using offline 1H
    NMR spectroscopy, revealing an increase in conversion with enhanced swelling properties
    of the polymer networks, which facilitated greater accessibility of catalytic
    sites. In continuous-flow MFR experiments, optimized polymer gel dots exhibited
    superior catalytic performance, achieving a conversion of up to 72%, compared
    to other compositions. This improvement was attributed to the enhanced swelling
    in the reaction mixture (DMSO/methanol, 7:3 v/v) at 40 °C over 72 h. Furthermore,
    the MFR system enabled the efficient synthesis of a series of CUM derivatives,
    demonstrating significantly higher conversion rates than traditional batch reactions.
    Notably, while batch reactions required 90% catalyst loading in the gel, the MFR
    system achieved a comparable or superior performance with only 50% catalyst, resulting
    in a higher turnover number. These findings underscore the advantages of continuous-flow
    organo-catalysis in enhancing catalytic efficiency and sustainability in organic
    synthesis.</jats:p>
article_number: '278'
author:
- first_name: Naresh
  full_name: Killi, Naresh
  last_name: Killi
- first_name: Katja
  full_name: Rumpke, Katja
  last_name: Rumpke
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
citation:
  ama: Killi N, Rumpke K, Kuckling D. Synthesis of Curcumin Derivatives via Knoevenagel
    Reaction Within a Continuously Driven Microfluidic Reactor Using Polymeric Networks
    Containing Piperidine as a Catalyst. <i>Gels</i>. 2025;11(4). doi:<a href="https://doi.org/10.3390/gels11040278">10.3390/gels11040278</a>
  apa: Killi, N., Rumpke, K., &#38; Kuckling, D. (2025). Synthesis of Curcumin Derivatives
    via Knoevenagel Reaction Within a Continuously Driven Microfluidic Reactor Using
    Polymeric Networks Containing Piperidine as a Catalyst. <i>Gels</i>, <i>11</i>(4),
    Article 278. <a href="https://doi.org/10.3390/gels11040278">https://doi.org/10.3390/gels11040278</a>
  bibtex: '@article{Killi_Rumpke_Kuckling_2025, title={Synthesis of Curcumin Derivatives
    via Knoevenagel Reaction Within a Continuously Driven Microfluidic Reactor Using
    Polymeric Networks Containing Piperidine as a Catalyst}, volume={11}, DOI={<a
    href="https://doi.org/10.3390/gels11040278">10.3390/gels11040278</a>}, number={4278},
    journal={Gels}, publisher={MDPI AG}, author={Killi, Naresh and Rumpke, Katja and
    Kuckling, Dirk}, year={2025} }'
  chicago: Killi, Naresh, Katja Rumpke, and Dirk Kuckling. “Synthesis of Curcumin
    Derivatives via Knoevenagel Reaction Within a Continuously Driven Microfluidic
    Reactor Using Polymeric Networks Containing Piperidine as a Catalyst.” <i>Gels</i>
    11, no. 4 (2025). <a href="https://doi.org/10.3390/gels11040278">https://doi.org/10.3390/gels11040278</a>.
  ieee: 'N. Killi, K. Rumpke, and D. Kuckling, “Synthesis of Curcumin Derivatives
    via Knoevenagel Reaction Within a Continuously Driven Microfluidic Reactor Using
    Polymeric Networks Containing Piperidine as a Catalyst,” <i>Gels</i>, vol. 11,
    no. 4, Art. no. 278, 2025, doi: <a href="https://doi.org/10.3390/gels11040278">10.3390/gels11040278</a>.'
  mla: Killi, Naresh, et al. “Synthesis of Curcumin Derivatives via Knoevenagel Reaction
    Within a Continuously Driven Microfluidic Reactor Using Polymeric Networks Containing
    Piperidine as a Catalyst.” <i>Gels</i>, vol. 11, no. 4, 278, MDPI AG, 2025, doi:<a
    href="https://doi.org/10.3390/gels11040278">10.3390/gels11040278</a>.
  short: N. Killi, K. Rumpke, D. Kuckling, Gels 11 (2025).
date_created: 2025-04-11T07:12:02Z
date_updated: 2025-04-11T07:13:26Z
department:
- _id: '163'
doi: 10.3390/gels11040278
intvolume: '        11'
issue: '4'
keyword:
- flow chemistry
- heterogeneous catalysis
- sustainable synthesis
- organo-catalysis
- polymeric gel dots
language:
- iso: eng
main_file_link:
- url: https://www.mdpi.com/2310-2861/11/4/278
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI AG
status: public
title: Synthesis of Curcumin Derivatives via Knoevenagel Reaction Within a Continuously
  Driven Microfluidic Reactor Using Polymeric Networks Containing Piperidine as a
  Catalyst
type: journal_article
user_id: '94'
volume: 11
year: '2025'
...
---
_id: '53166'
abstract:
- lang: eng
  text: <jats:p>The Knoevenagel reaction is a classic reaction in organic chemistry
    for the formation of C-C bonds. In this study, various catalytic monomers for
    Knoevenagel reactions were synthesized and polymerized via photolithography to
    form polymeric gel dots with a composition of 90% catalyst, 9% gelling agent and
    1% crosslinker. Furthermore, these gel dots were inserted into a microfluidic
    reactor (MFR) and the conversion of the reaction using gel dots as catalysts in
    the MFR for 8 h at room temperature was studied. The gel dots containing primary
    amines showed a better conversion of about 83–90% with aliphatic aldehyde and
    86–100% with aromatic aldehyde, compared to the tertiary amines (52–59% with aliphatic
    aldehyde and 77–93% with aromatic aldehydes) which resembles the reactivity of
    the amines. Moreover, the addition of polar solvent (water) in the reaction mixture
    and the swelling properties of the gel dots by altering the polymer backbone showed
    a significant enhancement in the conversion of the reaction, due to the increased
    accessibility of the catalytic sites in the polymeric network. These results suggested
    the primary-amine-based catalysts facilitate better conversion compared to tertiary
    amines and the reaction solvent had a significant influence on organocatalysis
    to improve the efficiency of MFR.</jats:p>
article_number: '171'
article_type: original
author:
- first_name: Naresh
  full_name: Killi, Naresh
  last_name: Killi
- first_name: Julian
  full_name: Bartenbach, Julian
  last_name: Bartenbach
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
citation:
  ama: Killi N, Bartenbach J, Kuckling D. Polymeric Networks Containing Amine Derivatives
    as Organocatalysts for Knoevenagel Reaction within Continuously Driven Microfluidic
    Reactors. <i>Gels</i>. 2023;9(3). doi:<a href="https://doi.org/10.3390/gels9030171">10.3390/gels9030171</a>
  apa: Killi, N., Bartenbach, J., &#38; Kuckling, D. (2023). Polymeric Networks Containing
    Amine Derivatives as Organocatalysts for Knoevenagel Reaction within Continuously
    Driven Microfluidic Reactors. <i>Gels</i>, <i>9</i>(3), Article 171. <a href="https://doi.org/10.3390/gels9030171">https://doi.org/10.3390/gels9030171</a>
  bibtex: '@article{Killi_Bartenbach_Kuckling_2023, title={Polymeric Networks Containing
    Amine Derivatives as Organocatalysts for Knoevenagel Reaction within Continuously
    Driven Microfluidic Reactors}, volume={9}, DOI={<a href="https://doi.org/10.3390/gels9030171">10.3390/gels9030171</a>},
    number={3171}, journal={Gels}, publisher={MDPI AG}, author={Killi, Naresh and
    Bartenbach, Julian and Kuckling, Dirk}, year={2023} }'
  chicago: Killi, Naresh, Julian Bartenbach, and Dirk Kuckling. “Polymeric Networks
    Containing Amine Derivatives as Organocatalysts for Knoevenagel Reaction within
    Continuously Driven Microfluidic Reactors.” <i>Gels</i> 9, no. 3 (2023). <a href="https://doi.org/10.3390/gels9030171">https://doi.org/10.3390/gels9030171</a>.
  ieee: 'N. Killi, J. Bartenbach, and D. Kuckling, “Polymeric Networks Containing
    Amine Derivatives as Organocatalysts for Knoevenagel Reaction within Continuously
    Driven Microfluidic Reactors,” <i>Gels</i>, vol. 9, no. 3, Art. no. 171, 2023,
    doi: <a href="https://doi.org/10.3390/gels9030171">10.3390/gels9030171</a>.'
  mla: Killi, Naresh, et al. “Polymeric Networks Containing Amine Derivatives as Organocatalysts
    for Knoevenagel Reaction within Continuously Driven Microfluidic Reactors.” <i>Gels</i>,
    vol. 9, no. 3, 171, MDPI AG, 2023, doi:<a href="https://doi.org/10.3390/gels9030171">10.3390/gels9030171</a>.
  short: N. Killi, J. Bartenbach, D. Kuckling, Gels 9 (2023).
date_created: 2024-04-03T11:06:26Z
date_updated: 2024-04-03T11:07:31Z
department:
- _id: '163'
doi: 10.3390/gels9030171
intvolume: '         9'
issue: '3'
keyword:
- Knoevenagel reaction
- organocatalysis
- polymeric gel dots
- microfluidic reactions
- polymeric networks
language:
- iso: eng
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI AG
status: public
title: Polymeric Networks Containing Amine Derivatives as Organocatalysts for Knoevenagel
  Reaction within Continuously Driven Microfluidic Reactors
type: journal_article
user_id: '94'
volume: 9
year: '2023'
...
---
_id: '35642'
abstract:
- lang: eng
  text: '<jats:p>There is an increasing interest in sensing applications for a variety
    of analytes in aqueous environments, as conventional methods do not work reliably
    under humid conditions or they require complex equipment with experienced operators.
    Hydrogel sensors are easy to fabricate, are incredibly sensitive, and have broad
    dynamic ranges. Experiments on their robustness, reliability, and reusability
    have indicated the possible long-term applications of these systems in a variety
    of fields, including disease diagnosis, detection of pharmaceuticals, and in environmental
    testing. It is possible to produce hydrogels, which, upon sensing a specific analyte,
    can adsorb it onto their 3D-structure and can therefore be used to remove them
    from a given environment. High specificity can be obtained by using molecularly
    imprinted polymers. Typical detection principles involve optical methods including
    fluorescence and chemiluminescence, and volume changes in colloidal photonic crystals,
    as well as electrochemical methods. Here, we explore the current research utilizing
    hydrogel-based sensors in three main areas: (1) biomedical applications, (2) for
    detecting and quantifying pharmaceuticals of interest, and (3) detecting and quantifying
    environmental contaminants in aqueous environments.</jats:p>'
article_number: '768'
article_type: review
author:
- first_name: Katharina
  full_name: Völlmecke, Katharina
  last_name: Völlmecke
- first_name: Rowshon
  full_name: Afroz, Rowshon
  last_name: Afroz
- first_name: Sascha
  full_name: Bierbach, Sascha
  last_name: Bierbach
- first_name: Lee Josephine
  full_name: Brenker, Lee Josephine
  last_name: Brenker
- first_name: Sebastian
  full_name: Frücht, Sebastian
  last_name: Frücht
- first_name: Alexandra
  full_name: Glass, Alexandra
  last_name: Glass
- first_name: Ryland
  full_name: Giebelhaus, Ryland
  last_name: Giebelhaus
- first_name: Axel
  full_name: Hoppe, Axel
  last_name: Hoppe
- first_name: Karen
  full_name: Kanemaru, Karen
  last_name: Kanemaru
- first_name: Michal
  full_name: Lazarek, Michal
  last_name: Lazarek
- first_name: Lukas
  full_name: Rabbe, Lukas
  last_name: Rabbe
- first_name: Longfei
  full_name: Song, Longfei
  last_name: Song
- first_name: Andrea
  full_name: Velasco Suarez, Andrea
  last_name: Velasco Suarez
- first_name: Shuang
  full_name: Wu, Shuang
  last_name: Wu
- first_name: Michael
  full_name: Serpe, Michael
  last_name: Serpe
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
citation:
  ama: Völlmecke K, Afroz R, Bierbach S, et al. Hydrogel-Based Biosensors. <i>Gels</i>.
    2022;8(12). doi:<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>
  apa: Völlmecke, K., Afroz, R., Bierbach, S., Brenker, L. J., Frücht, S., Glass,
    A., Giebelhaus, R., Hoppe, A., Kanemaru, K., Lazarek, M., Rabbe, L., Song, L.,
    Velasco Suarez, A., Wu, S., Serpe, M., &#38; Kuckling, D. (2022). Hydrogel-Based
    Biosensors. <i>Gels</i>, <i>8</i>(12), Article 768. <a href="https://doi.org/10.3390/gels8120768">https://doi.org/10.3390/gels8120768</a>
  bibtex: '@article{Völlmecke_Afroz_Bierbach_Brenker_Frücht_Glass_Giebelhaus_Hoppe_Kanemaru_Lazarek_et
    al._2022, title={Hydrogel-Based Biosensors}, volume={8}, DOI={<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>},
    number={12768}, journal={Gels}, publisher={MDPI AG}, author={Völlmecke, Katharina
    and Afroz, Rowshon and Bierbach, Sascha and Brenker, Lee Josephine and Frücht,
    Sebastian and Glass, Alexandra and Giebelhaus, Ryland and Hoppe, Axel and Kanemaru,
    Karen and Lazarek, Michal and et al.}, year={2022} }'
  chicago: Völlmecke, Katharina, Rowshon Afroz, Sascha Bierbach, Lee Josephine Brenker,
    Sebastian Frücht, Alexandra Glass, Ryland Giebelhaus, et al. “Hydrogel-Based Biosensors.”
    <i>Gels</i> 8, no. 12 (2022). <a href="https://doi.org/10.3390/gels8120768">https://doi.org/10.3390/gels8120768</a>.
  ieee: 'K. Völlmecke <i>et al.</i>, “Hydrogel-Based Biosensors,” <i>Gels</i>, vol.
    8, no. 12, Art. no. 768, 2022, doi: <a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>.'
  mla: Völlmecke, Katharina, et al. “Hydrogel-Based Biosensors.” <i>Gels</i>, vol.
    8, no. 12, 768, MDPI AG, 2022, doi:<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>.
  short: K. Völlmecke, R. Afroz, S. Bierbach, L.J. Brenker, S. Frücht, A. Glass, R.
    Giebelhaus, A. Hoppe, K. Kanemaru, M. Lazarek, L. Rabbe, L. Song, A. Velasco Suarez,
    S. Wu, M. Serpe, D. Kuckling, Gels 8 (2022).
date_created: 2023-01-10T08:02:50Z
date_updated: 2023-01-10T08:05:30Z
department:
- _id: '163'
doi: 10.3390/gels8120768
intvolume: '         8'
issue: '12'
keyword:
- Polymers and Plastics
- Organic Chemistry
- Biomaterials
- Bioengineering
language:
- iso: eng
main_file_link:
- url: https://www.mdpi.com/2310-2861/8/12/768
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI AG
status: public
title: Hydrogel-Based Biosensors
type: journal_article
user_id: '94'
volume: 8
year: '2022'
...
---
_id: '59617'
abstract:
- lang: eng
  text: '<jats:p>There is an increasing interest in sensing applications for a variety
    of analytes in aqueous environments, as conventional methods do not work reliably
    under humid conditions or they require complex equipment with experienced operators.
    Hydrogel sensors are easy to fabricate, are incredibly sensitive, and have broad
    dynamic ranges. Experiments on their robustness, reliability, and reusability
    have indicated the possible long-term applications of these systems in a variety
    of fields, including disease diagnosis, detection of pharmaceuticals, and in environmental
    testing. It is possible to produce hydrogels, which, upon sensing a specific analyte,
    can adsorb it onto their 3D-structure and can therefore be used to remove them
    from a given environment. High specificity can be obtained by using molecularly
    imprinted polymers. Typical detection principles involve optical methods including
    fluorescence and chemiluminescence, and volume changes in colloidal photonic crystals,
    as well as electrochemical methods. Here, we explore the current research utilizing
    hydrogel-based sensors in three main areas: (1) biomedical applications, (2) for
    detecting and quantifying pharmaceuticals of interest, and (3) detecting and quantifying
    environmental contaminants in aqueous environments.</jats:p>'
article_number: '768'
author:
- first_name: Katharina
  full_name: Völlmecke, Katharina
  last_name: Völlmecke
- first_name: Rowshon
  full_name: Afroz, Rowshon
  last_name: Afroz
- first_name: Sascha
  full_name: Bierbach, Sascha
  last_name: Bierbach
- first_name: Lee Josephine
  full_name: Brenker, Lee Josephine
  last_name: Brenker
- first_name: Sebastian
  full_name: Frücht, Sebastian
  last_name: Frücht
- first_name: Alexandra
  full_name: Glass, Alexandra
  last_name: Glass
- first_name: Ryland
  full_name: Giebelhaus, Ryland
  last_name: Giebelhaus
- first_name: Axel
  full_name: Hoppe, Axel
  id: '62844'
  last_name: Hoppe
- first_name: Karen
  full_name: Kanemaru, Karen
  last_name: Kanemaru
- first_name: Michal
  full_name: Lazarek, Michal
  last_name: Lazarek
- first_name: Lukas
  full_name: Rabbe, Lukas
  last_name: Rabbe
- first_name: Longfei
  full_name: Song, Longfei
  last_name: Song
- first_name: Andrea
  full_name: Velasco Suarez, Andrea
  last_name: Velasco Suarez
- first_name: Shuang
  full_name: Wu, Shuang
  last_name: Wu
- first_name: Michael
  full_name: Serpe, Michael
  last_name: Serpe
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
citation:
  ama: Völlmecke K, Afroz R, Bierbach S, et al. Hydrogel-Based Biosensors. <i>Gels</i>.
    2022;8(12). doi:<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>
  apa: Völlmecke, K., Afroz, R., Bierbach, S., Brenker, L. J., Frücht, S., Glass,
    A., Giebelhaus, R., Hoppe, A., Kanemaru, K., Lazarek, M., Rabbe, L., Song, L.,
    Velasco Suarez, A., Wu, S., Serpe, M., &#38; Kuckling, D. (2022). Hydrogel-Based
    Biosensors. <i>Gels</i>, <i>8</i>(12), Article 768. <a href="https://doi.org/10.3390/gels8120768">https://doi.org/10.3390/gels8120768</a>
  bibtex: '@article{Völlmecke_Afroz_Bierbach_Brenker_Frücht_Glass_Giebelhaus_Hoppe_Kanemaru_Lazarek_et
    al._2022, title={Hydrogel-Based Biosensors}, volume={8}, DOI={<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>},
    number={12768}, journal={Gels}, publisher={MDPI AG}, author={Völlmecke, Katharina
    and Afroz, Rowshon and Bierbach, Sascha and Brenker, Lee Josephine and Frücht,
    Sebastian and Glass, Alexandra and Giebelhaus, Ryland and Hoppe, Axel and Kanemaru,
    Karen and Lazarek, Michal and et al.}, year={2022} }'
  chicago: Völlmecke, Katharina, Rowshon Afroz, Sascha Bierbach, Lee Josephine Brenker,
    Sebastian Frücht, Alexandra Glass, Ryland Giebelhaus, et al. “Hydrogel-Based Biosensors.”
    <i>Gels</i> 8, no. 12 (2022). <a href="https://doi.org/10.3390/gels8120768">https://doi.org/10.3390/gels8120768</a>.
  ieee: 'K. Völlmecke <i>et al.</i>, “Hydrogel-Based Biosensors,” <i>Gels</i>, vol.
    8, no. 12, Art. no. 768, 2022, doi: <a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>.'
  mla: Völlmecke, Katharina, et al. “Hydrogel-Based Biosensors.” <i>Gels</i>, vol.
    8, no. 12, 768, MDPI AG, 2022, doi:<a href="https://doi.org/10.3390/gels8120768">10.3390/gels8120768</a>.
  short: K. Völlmecke, R. Afroz, S. Bierbach, L.J. Brenker, S. Frücht, A. Glass, R.
    Giebelhaus, A. Hoppe, K. Kanemaru, M. Lazarek, L. Rabbe, L. Song, A. Velasco Suarez,
    S. Wu, M. Serpe, D. Kuckling, Gels 8 (2022).
date_created: 2025-04-22T05:59:29Z
date_updated: 2025-04-22T06:12:07Z
department:
- _id: '311'
doi: 10.3390/gels8120768
intvolume: '         8'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/2310-2861/8/12/768
oa: '1'
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Hydrogel-Based Biosensors
type: journal_article
user_id: '62844'
volume: 8
year: '2022'
...
---
_id: '23856'
article_number: '11'
author:
- first_name: Patrik
  full_name: Berg, Patrik
  last_name: Berg
- first_name: Carsten Dieter
  full_name: Prowald, Carsten Dieter
  last_name: Prowald
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
citation:
  ama: Berg P, Prowald CD, Kuckling D. Investigation of Gel Properties of Novel Cryo-Clay-Silica
    Polymer Networks. <i>Gels</i>. 2020;6(2). doi:<a href="https://doi.org/10.3390/gels6020011">10.3390/gels6020011</a>
  apa: Berg, P., Prowald, C. D., &#38; Kuckling, D. (2020). Investigation of Gel Properties
    of Novel Cryo-Clay-Silica Polymer Networks. <i>Gels</i>, <i>6</i>(2), Article
    11. <a href="https://doi.org/10.3390/gels6020011">https://doi.org/10.3390/gels6020011</a>
  bibtex: '@article{Berg_Prowald_Kuckling_2020, title={Investigation of Gel Properties
    of Novel Cryo-Clay-Silica Polymer Networks}, volume={6}, DOI={<a href="https://doi.org/10.3390/gels6020011">10.3390/gels6020011</a>},
    number={211}, journal={Gels}, publisher={MDPI}, author={Berg, Patrik and Prowald,
    Carsten Dieter and Kuckling, Dirk}, year={2020} }'
  chicago: Berg, Patrik, Carsten Dieter Prowald, and Dirk Kuckling. “Investigation
    of Gel Properties of Novel Cryo-Clay-Silica Polymer Networks.” <i>Gels</i> 6,
    no. 2 (2020). <a href="https://doi.org/10.3390/gels6020011">https://doi.org/10.3390/gels6020011</a>.
  ieee: 'P. Berg, C. D. Prowald, and D. Kuckling, “Investigation of Gel Properties
    of Novel Cryo-Clay-Silica Polymer Networks,” <i>Gels</i>, vol. 6, no. 2, Art.
    no. 11, 2020, doi: <a href="https://doi.org/10.3390/gels6020011">10.3390/gels6020011</a>.'
  mla: Berg, Patrik, et al. “Investigation of Gel Properties of Novel Cryo-Clay-Silica
    Polymer Networks.” <i>Gels</i>, vol. 6, no. 2, 11, MDPI, 2020, doi:<a href="https://doi.org/10.3390/gels6020011">10.3390/gels6020011</a>.
  short: P. Berg, C.D. Prowald, D. Kuckling, Gels 6 (2020).
date_created: 2021-09-07T10:28:53Z
date_updated: 2022-07-28T10:02:53Z
department:
- _id: '311'
doi: 10.3390/gels6020011
intvolume: '         6'
issue: '2'
language:
- iso: eng
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI
status: public
title: Investigation of Gel Properties of Novel Cryo-Clay-Silica Polymer Networks
type: journal_article
user_id: '94'
volume: 6
year: '2020'
...
---
_id: '35330'
abstract:
- lang: eng
  text: <jats:p>Gelled lyotropic liquid crystals can be formed by adding a gelator
    to a mixture of surfactant and solvent. If the gel network and the liquid-crystalline
    phase coexist without influencing each other, the self-assembly is called orthogonal.
    In this study, the influence of the organogelator 12-hydroxyoctadecanoic acid
    (12-HOA) on the lamellar and hexagonal liquid crystalline phases of the binary
    system H2O–C12E7 (heptaethylene glycol monododecyl ether) is investigated. More
    precisely, we added 12-HOA at mass fractions from 0.015 to 0.05 and studied the
    resulting phase diagram of the system H2O–C12E7 by visual observation of birefringence
    and by 2H NMR spectroscopy. In addition, the dynamic shear moduli of the samples
    were measured in order to examine their gel character. The results show that 12-HOA
    is partly acting as co-surfactant, manifested by the destabilization of the hexagonal
    phase and the stabilization of the lamellar phase. The higher the total surfactant
    concentration, the more 12-HOA is incorporated in the surfactant layer. Accordingly,
    its gelation capacity is substantially reduced in the surfactant solution compared
    to the system 12-HOA–n-decane, and large amounts of gelator are required for gels
    to form, especially in the lamellar phase.</jats:p>
article_number: '78'
article_type: original
author:
- first_name: Katja
  full_name: Steck, Katja
  last_name: Steck
- first_name: Claudia
  full_name: Schmidt, Claudia
  id: '466'
  last_name: Schmidt
  orcid: 0000-0003-3179-9997
- first_name: Cosima
  full_name: Stubenrauch, Cosima
  last_name: Stubenrauch
citation:
  ama: 'Steck K, Schmidt C, Stubenrauch C. The Twofold Role of 12-Hydroxyoctadecanoic
    Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA System: Gelator and Co-Surfactant.
    <i>Gels</i>. 2018;4(3). doi:<a href="https://doi.org/10.3390/gels4030078">10.3390/gels4030078</a>'
  apa: 'Steck, K., Schmidt, C., &#38; Stubenrauch, C. (2018). The Twofold Role of
    12-Hydroxyoctadecanoic Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA System:
    Gelator and Co-Surfactant. <i>Gels</i>, <i>4</i>(3), Article 78. <a href="https://doi.org/10.3390/gels4030078">https://doi.org/10.3390/gels4030078</a>'
  bibtex: '@article{Steck_Schmidt_Stubenrauch_2018, title={The Twofold Role of 12-Hydroxyoctadecanoic
    Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA System: Gelator and Co-Surfactant},
    volume={4}, DOI={<a href="https://doi.org/10.3390/gels4030078">10.3390/gels4030078</a>},
    number={378}, journal={Gels}, publisher={MDPI AG}, author={Steck, Katja and Schmidt,
    Claudia and Stubenrauch, Cosima}, year={2018} }'
  chicago: 'Steck, Katja, Claudia Schmidt, and Cosima Stubenrauch. “The Twofold Role
    of 12-Hydroxyoctadecanoic Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA System:
    Gelator and Co-Surfactant.” <i>Gels</i> 4, no. 3 (2018). <a href="https://doi.org/10.3390/gels4030078">https://doi.org/10.3390/gels4030078</a>.'
  ieee: 'K. Steck, C. Schmidt, and C. Stubenrauch, “The Twofold Role of 12-Hydroxyoctadecanoic
    Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA System: Gelator and Co-Surfactant,”
    <i>Gels</i>, vol. 4, no. 3, Art. no. 78, 2018, doi: <a href="https://doi.org/10.3390/gels4030078">10.3390/gels4030078</a>.'
  mla: 'Steck, Katja, et al. “The Twofold Role of 12-Hydroxyoctadecanoic Acid (12-HOA)
    in a Ternary Water—Surfactant—12-HOA System: Gelator and Co-Surfactant.” <i>Gels</i>,
    vol. 4, no. 3, 78, MDPI AG, 2018, doi:<a href="https://doi.org/10.3390/gels4030078">10.3390/gels4030078</a>.'
  short: K. Steck, C. Schmidt, C. Stubenrauch, Gels 4 (2018).
date_created: 2023-01-06T12:51:42Z
date_updated: 2023-01-07T10:33:24Z
department:
- _id: '2'
- _id: '315'
doi: 10.3390/gels4030078
intvolume: '         4'
issue: '3'
keyword:
- Polymers and Plastics
- Organic Chemistry
- Biomaterials
- Bioengineering
language:
- iso: eng
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'The Twofold Role of 12-Hydroxyoctadecanoic Acid (12-HOA) in a Ternary Water—Surfactant—12-HOA
  System: Gelator and Co-Surfactant'
type: journal_article
user_id: '466'
volume: 4
year: '2018'
...
---
_id: '25909'
abstract:
- lang: eng
  text: Organic polymer-hydrogels are known to be capable of directing the nucleation
    and growth of inorganic materials, such as silica, metal oxides, apatite or metal
    chalcogenides. This approach can be exploited in the synthesis of materials that
    exhibit defined nanoporosity. When the organic polymer-based hydrogel is incorporated
    in the inorganic product, a composite is formed from which the organic component
    may be selectively removed, yielding nanopores in the inorganic product. Such
    porogenic impact resembles the concept of using soft or hard templates for porous
    materials. This micro-review provides a survey of select examples from the literature.
article_number: '83'
article_type: review
author:
- first_name: Christian
  full_name: Weinberger, Christian
  id: '11848'
  last_name: Weinberger
- first_name: Dirk
  full_name: Kuckling, Dirk
  id: '287'
  last_name: Kuckling
- first_name: Michael
  full_name: Tiemann, Michael
  id: '23547'
  last_name: Tiemann
  orcid: 0000-0003-1711-2722
citation:
  ama: Weinberger C, Kuckling D, Tiemann M. Hydrogels as Porogens for Nanoporous Inorganic
    Materials. <i>Gels</i>. Published online 2018. doi:<a href="https://doi.org/10.3390/gels4040083">10.3390/gels4040083</a>
  apa: Weinberger, C., Kuckling, D., &#38; Tiemann, M. (2018). Hydrogels as Porogens
    for Nanoporous Inorganic Materials. <i>Gels</i>, Article 83. <a href="https://doi.org/10.3390/gels4040083">https://doi.org/10.3390/gels4040083</a>
  bibtex: '@article{Weinberger_Kuckling_Tiemann_2018, title={Hydrogels as Porogens
    for Nanoporous Inorganic Materials}, DOI={<a href="https://doi.org/10.3390/gels4040083">10.3390/gels4040083</a>},
    number={83}, journal={Gels}, author={Weinberger, Christian and Kuckling, Dirk
    and Tiemann, Michael}, year={2018} }'
  chicago: Weinberger, Christian, Dirk Kuckling, and Michael Tiemann. “Hydrogels as
    Porogens for Nanoporous Inorganic Materials.” <i>Gels</i>, 2018. <a href="https://doi.org/10.3390/gels4040083">https://doi.org/10.3390/gels4040083</a>.
  ieee: 'C. Weinberger, D. Kuckling, and M. Tiemann, “Hydrogels as Porogens for Nanoporous
    Inorganic Materials,” <i>Gels</i>, Art. no. 83, 2018, doi: <a href="https://doi.org/10.3390/gels4040083">10.3390/gels4040083</a>.'
  mla: Weinberger, Christian, et al. “Hydrogels as Porogens for Nanoporous Inorganic
    Materials.” <i>Gels</i>, 83, 2018, doi:<a href="https://doi.org/10.3390/gels4040083">10.3390/gels4040083</a>.
  short: C. Weinberger, D. Kuckling, M. Tiemann, Gels (2018).
date_created: 2021-10-08T10:47:59Z
date_updated: 2023-03-08T10:20:36Z
department:
- _id: '35'
- _id: '2'
- _id: '307'
- _id: '311'
doi: 10.3390/gels4040083
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/2310-2861/4/4/83/pdf?version=1539178292
oa: '1'
publication: Gels
publication_identifier:
  issn:
  - 2310-2861
publication_status: published
quality_controlled: '1'
status: public
title: Hydrogels as Porogens for Nanoporous Inorganic Materials
type: journal_article
user_id: '23547'
year: '2018'
...
