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Synthesis and Thermoresponsive Property of Well-Defined Poly (N-Isopropylacrylamide) with Pyrenyl End-Group

Author: YuZuo
Tutor: DuanQian
School: Changchun University of Science and Technology
Course: Inorganic Chemistry
Keywords: N-isopropyl acrylamide (NIPAM) Pyrenyl Atom transfer radical polymerization (ATRP ) Lower critical solution temperature (LCST)
CLC: O631.3
Type: Master's thesis
Year: 2007
Downloads: 133
Quote: 0
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Abstract


1 - pyrenyl - 2 - propionyl chloride as the initiator, and cuprous chloride (CuCl ) , 3 - [ 2 - ( dimethylamino) ] amine ( the Me 6 TREN) for the catalytic system, under conditions of 20 ° C , N - isopropyl acrylamide (NIPAM) atom transfer radical polymerization . A kinetics show that in a high conversion rate throughout the reaction has a good controllability of the UV-Vis , IR , NMR, spectroscopy tests showed that successfully synthesized having a narrow molecular weight distribution of the chain end with a pyrenyl group of poly-N - isopropylacrylamide (Py-PNIPAM). Investigated Py-PNIPAM thermosensitive PNIPAM lowest critical dissolution temperature (LCST) increase as the molecular weight decreased, the LCST phenomenon of the polymer not end with pyrenyl opposite . Py-PNIPAM with β-cyclodextrin assembly experiments investigated after assembly pyrenyl Thermosensitive polymers . Formation found the pyrenyl with β-cyclodextrin inclusion complex makes Py-PNIPAM polymer LCST values ​​increase cooperation with package .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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