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000004078 0247_ $$2pmid$$apmid:19166277
000004078 0247_ $$2DOI$$a10.1021/la8029903
000004078 0247_ $$2WOS$$aWOS:000263373600078
000004078 037__ $$aPreJuSER-4078
000004078 041__ $$aeng
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000004078 084__ $$2WoS$$aChemistry, Multidisciplinary
000004078 084__ $$2WoS$$aChemistry, Physical
000004078 084__ $$2WoS$$aMaterials Science, Multidisciplinary
000004078 1001_ $$0P:(DE-HGF)0$$aZhang, Z.$$b0
000004078 245__ $$aReversible gelation of rod-like viruses grafted with thermoresponsive polymers
000004078 260__ $$aWashington, DC$$bACS Publ.$$c2009
000004078 300__ $$a2437 - 2442
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000004078 440_0 $$04081$$aLangmuir$$v25$$x0743-7463$$y4
000004078 500__ $$aThis work was supported by the European network of excellence-SoftComp. The EU is also acknowledged for funding through Nanodirect FP7-NMP-2007-SMALL-1, project 213948. We also thank Sabine Willbold for performing NMR measurement and Johan Buitenhuis for useful discussion. Jan K. Dhont is acknowledged for stimulating discussions and for his reading of the manuscript.
000004078 520__ $$aThe synthesis and selected macroscopic properties of a new model system consisting of poly(N-isopropylacrylamide) (PNIPAM)-coated rod-like fd virus particles are presented. The sticky rod-like colloids can be used to study effect of particle shape on gelation transition, the structure and viscoelasticity of isotropic and nematic gels, and to make both open isotropic as well as ordered nematic particle networks. This model system of rod-like colloids, for which the strength of attraction between the particles is tunable, is obtained by chemically grafting highly monodisperse rod-like fd virus particles with thermoresponsive polymers, e.g. PNIPAM. At room temperature, suspensions of the resulting hybrid PNIPAM-fd are fluid sols which are in isotropic or liquid crystalline phases, depending on the particle concentration and ionic strength. During heating/cooling, the suspensions change reversibly between sol and gel state near a critical temperature of approximately 32 degrees C, close to the lower critical solution temperature of free PNIPAM. The so-called nematic gel, which exhibits a cholesteric feature, can therefore be easily obtained. The gelation behavior of PNIPAM-fd system and the structure of the nematic gel have been characterized by rheology, optical microscopy and small-angle X-ray scattering.
000004078 536__ $$0G:(DE-Juel1)FUEK414$$2G:(DE-HGF)$$aKondensierte Materie$$cP54$$x0
000004078 536__ $$0G:(EU-Grant)213948$$aNANODIRECT - Toolbox for Directed and Controlled Self-Assembly of nano-Colloids (213948)$$c213948$$fFP7-NMP-2007-SMALL-1$$x1
000004078 588__ $$aDataset connected to Web of Science, Pubmed
000004078 650_2 $$2MeSH$$aAcrylamides: chemistry
000004078 650_2 $$2MeSH$$aGelatin: chemistry
000004078 650_2 $$2MeSH$$aGels: chemistry
000004078 650_2 $$2MeSH$$aLiquid Crystals: chemistry
000004078 650_2 $$2MeSH$$aMolecular Structure
000004078 650_2 $$2MeSH$$aPhase Transition
000004078 650_2 $$2MeSH$$aPolymers: chemistry
000004078 650_2 $$2MeSH$$aTemperature
000004078 650_2 $$2MeSH$$aViruses: chemistry
000004078 650_7 $$00$$2NLM Chemicals$$aAcrylamides
000004078 650_7 $$00$$2NLM Chemicals$$aGels
000004078 650_7 $$00$$2NLM Chemicals$$aPolymers
000004078 650_7 $$00$$2NLM Chemicals$$apoly(N-isopropylacrylamide)
000004078 650_7 $$09000-70-8$$2NLM Chemicals$$aGelatin
000004078 650_7 $$2WoSType$$aJ
000004078 7001_ $$0P:(DE-HGF)0$$aKrishna, N.$$b1
000004078 7001_ $$0P:(DE-Juel1)130797$$aLettinga, M. P.$$b2$$uFZJ
000004078 7001_ $$0P:(DE-HGF)0$$aVermant, J.$$b3
000004078 7001_ $$0P:(DE-HGF)0$$aGrelet, E.$$b4
000004078 773__ $$0PERI:(DE-600)2005937-1$$a10.1021/la8029903$$gVol. 25, p. 2437 - 2442$$p2437 - 2442$$q25<2437 - 2442$$tLangmuir$$v25$$x0743-7463$$y2009
000004078 8567_ $$uhttp://dx.doi.org/10.1021/la8029903
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