{"title":"Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals","_id":"39720","department":[{"_id":"313"},{"_id":"230"},{"_id":"638"}],"publication_identifier":{"issn":["1364-503X","1471-2962"]},"volume":371,"user_id":"254","citation":{"bibtex":"@article{Mirzaei_Urbanski_Kitzerow_Hegmann_2013, title={Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals}, volume={371}, DOI={<a href=\"https://doi.org/10.1098/rsta.2012.0256\">10.1098/rsta.2012.0256</a>}, number={198820120256}, journal={Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences}, publisher={The Royal Society}, author={Mirzaei, Javad and Urbanski, Martin and Kitzerow, Heinz-Siegfried and Hegmann, Torsten}, year={2013} }","short":"J. Mirzaei, M. Urbanski, H.-S. Kitzerow, T. Hegmann, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371 (2013).","chicago":"Mirzaei, Javad, Martin Urbanski, Heinz-Siegfried Kitzerow, and Torsten Hegmann. “Hydrophobic Gold Nanoparticles via Silane Conjugation: Chemically and Thermally Robust Nanoparticles as Dopants for Nematic Liquid Crystals.” <i>Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences</i> 371, no. 1988 (2013). <a href=\"https://doi.org/10.1098/rsta.2012.0256\">https://doi.org/10.1098/rsta.2012.0256</a>.","ieee":"J. Mirzaei, M. Urbanski, H.-S. Kitzerow, and T. Hegmann, “Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals,” <i>Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>, vol. 371, no. 1988, Art. no. 20120256, 2013, doi: <a href=\"https://doi.org/10.1098/rsta.2012.0256\">10.1098/rsta.2012.0256</a>.","ama":"Mirzaei J, Urbanski M, Kitzerow H-S, Hegmann T. Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals. <i>Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>. 2013;371(1988). doi:<a href=\"https://doi.org/10.1098/rsta.2012.0256\">10.1098/rsta.2012.0256</a>","mla":"Mirzaei, Javad, et al. “Hydrophobic Gold Nanoparticles via Silane Conjugation: Chemically and Thermally Robust Nanoparticles as Dopants for Nematic Liquid Crystals.” <i>Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>, vol. 371, no. 1988, 20120256, The Royal Society, 2013, doi:<a href=\"https://doi.org/10.1098/rsta.2012.0256\">10.1098/rsta.2012.0256</a>.","apa":"Mirzaei, J., Urbanski, M., Kitzerow, H.-S., &#38; Hegmann, T. (2013). Hydrophobic gold nanoparticles via silane conjugation: chemically and thermally robust nanoparticles as dopants for nematic liquid crystals. <i>Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>, <i>371</i>(1988), Article 20120256. <a href=\"https://doi.org/10.1098/rsta.2012.0256\">https://doi.org/10.1098/rsta.2012.0256</a>"},"status":"public","intvolume":"       371","year":"2013","publisher":"The Royal Society","author":[{"full_name":"Mirzaei, Javad","last_name":"Mirzaei","first_name":"Javad"},{"last_name":"Urbanski","full_name":"Urbanski, Martin","first_name":"Martin"},{"full_name":"Kitzerow, Heinz-Siegfried","id":"254","last_name":"Kitzerow","first_name":"Heinz-Siegfried"},{"last_name":"Hegmann","full_name":"Hegmann, Torsten","first_name":"Torsten"}],"type":"journal_article","date_updated":"2023-01-24T18:34:39Z","publication":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy","General Engineering","General Mathematics"],"date_created":"2023-01-24T18:34:05Z","abstract":[{"lang":"eng","text":"<jats:p>\r\n            We examine for the first time how chemically and thermally stable gold nanoparticles (NPs), prepared by a silane conjugation approach, affect both the thermal and the electro-optical properties of a nematic liquid crystal (LC), when doped at concentrations ranging from 0.25 to 7.5 wt%. We find that the octadecylsilane-conjugated gold NPs stabilize both the enantiotropic nematic and the monotropic smectic-A phases of the LC host with a maximum stabilization of 2\r\n            <jats:sup>°</jats:sup>\r\n            C for the nematic and 3.5\r\n            <jats:sup>°</jats:sup>\r\n            C for the smectic-A phases for the mixture containing 1 wt% of the silanized particles. The same mixture shows the lowest values for the Fréedericksz transition threshold voltage and the highest value for the dielectric anisotropy. Generally, all NP-containing mixtures, except mixtures with NP concentrations exceeding 5 wt%, reduce the threshold voltage, increase the dielectric anisotropy and reduce both rise and decay time; the latter particularly at temperatures at least 10\r\n            <jats:sup>°</jats:sup>\r\n            C below the isotropic–nematic phase transition on cooling.\r\n          </jats:p>"}],"doi":"10.1098/rsta.2012.0256","article_number":"20120256","publication_status":"published","issue":"1988"}