Browse

Synthesis and characterization of poly(4`-(2,2-dialkynyl)ethenylstilbene-4-carboxylate)
Poly(4`-(2,2-dialkynyl)ethenylstilbene-4-carboxylate)의 합성 및 특성 연구

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors
유영민
Advisor
김영규
Issue Date
2003
Publisher
서울대학교 대학원
Keywords
Mitsunobu 축합 반응Mitsunobu condensation고차 가지 고분자Hyperbranched polymer광발광Photoluminescence
Description
Thesis (master`s)--서울대학교 대학원 :응용화학부,2003.
Abstract
Chromophoric interactions in conjugated polymers have critical effects on
performance of electroluminescence (EL) devices. One of the tactics to control
it is to optimize the degree of insulation with alkyl chains. So we suggested a
AB2 type hyperbranched copolymer system which have 4-ethenylstilbene as a
chromophore for A, and various alkyl chains for B. Via Heck reaction followed
by Sonogashira reaction, we successfully synthesized ready-to-polymerize
monomer with good yield, and the polymers were obtained through optimized
Mitsunobu condensation. Synthesized polymers showed moderate thermal
stability up to 300 oC. Compared with monomer, polymer solution in CHCl3
presented same absorption transition. In addition, λabs
maxs of polymer films
coated on to glass were blue shifted relative to polymer solution, and λems
max s
of them were red shifted. As varying alkyl chain length from butynyl to
undecynyl, fluorescence quantum yields were increased 15-fold.
Language
English
URI
http://dcollection.snu.ac.kr:80/jsp/common/DcLoOrgPer.jsp?sItemId=000000057867

https://hdl.handle.net/10371/68928
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Theses (Master's Degree_화학생물공학부)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse