abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제124회 학술발표회 및 총회 Synthesis of 1,1-Diisopropyl(or dihexyl)-2,5-ethynyl-3,4-diphenyl-siloles and their Glaser Oxidative Coupling Polymerization Reactions

등록일
2019년 8월 20일 15시 27분 09초
접수번호
0517
발표코드
POLY.P-13 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
Polymer Chemistry
저자 및
공동저자
Jong Wook Lim, Young Tae Park1,*
Keimyung University, Korea
1Department of Chemistry, Keimyung University, Korea
2,5-Dibromo-1,1-diisopropyl(or dihexyl)-3,4-diphenyl-siloles were prepared by reactions of diisopropyl(or dihexyl)-bis(phenylethynyl)silanes with lithium naphthalenide, ZnCl2, and N-bromosuccinimide (NBS). Palladium chloride, copper iodide, and triphenylphosphine as co-catalyst were used to replace two bromine groups of the prepared siloles with trimethylsilylacetylene (TMSA) under the reaction condition of diisopropylamine as solvent, in which were produced 1,1-diisopropyl(or dihexyl)-2,5-bis(trimethylsilylethynyl)-3,4-diphenyl-siloles. Then, detrimethylsilylation reactions were carried out to yield 1,1-diisopropyl(or dihexyl)-2,5-bis(ethynyl)-3,4-diphenyl-siloles using potassium carbonate under the methanol as solvent. The crude products were refined by recrystallization or column chromatography in the solvent of hexane. The product materials were characterized by 1H, 13C, and 29Si NMR. We also studied the photoelectronic properties of the materials by UV-vis absorption, excitation and fluorescence emission spectroscopic methods. We will also try Glaser oxidative coupling polymerization reactions of 1,1-diisopropyl(or dihexyl)-2,5-bis(ethynyl)-3,4-diphenyl-siloles in the presence of a catalytic amount of copper(I)chloride and pyridine with bubbling oxygen gas through reaction mixture to yield poly(1,1-diisopropyl(or dihexyl)-2,5-bis(ethynylene-3,4-diphenyl-silole)s. Acknowledgment. This work was supported by the Basic Science Research Program through the Nationaril Research Foundation of Korea (NRF) grant funded by the Ministry of Education of the Republic of Korea  (NRF-2017R1D1A3B03028014).

상단으로