Article thumbnail

Synthesis and Characterization of Hyperbranched Poly(ether amide)s with Thermoresponsive Property and Unexpected Strong Blue Photoluminescence

By Lin Y, Gao JW, Liu HW and Li YS

Abstract

A facile and efficient strategy for the syntheses of novel hyperbranched poly(ether amide)s (HPEA) from multihydroxyl primary amines and (meth)acryloyl chloride has been developed. The chemical structures of the HPEAs were confirmed by IR and NMR spectra. Analyses of SEC (size exclusion chromatography) and viscosity characterizations revealed the highly branched structures of the polymers obtained. The resultant hyperbranched polymers contain abundant hydroxyl groups. The thermoresponsive property was obtained from in situ surface modification of abundant OH end groups with N-isopropylacrylamide (NIPAAm). The study oil temperature-dependent characteristics has revealed that NIPAAm-g-HPEA exhibits an adjustable lower critical solution temperature (LCST) of about 34-42 degrees C depending on the grafting degree. More interestingly, the work provided an interesting phenomenon where the HPEA backbones exhibited strong blue photoluminescence

Topics: CONDENSING VINYL POLYMERIZATION, PROTON-TRANSFER POLYMERIZATION, AVAILABLE DICARBOXYLIC-ACIDS, TRANSFER RAFT POLYMERIZATION, STIMULI-RESPONSIVE POLYMERS, MICHAEL-TYPE ADDITION, BB'(2) TYPE MONOMERS, ONE-POT SYNTHESIS, RADICAL POLYMERIZATION, POLY(AMIDOAMINE) DENDRIMERS
Year: 2009
DOI identifier: 10.1021/ma802353f
OAI identifier: oai:ir.ciac.jl.cn:322003/12451
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://202.98.16.49/handle/322... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.