Synthesis and &quot;structural self-quenching effect&quot; of vinyl monomers   bearing electron-accepting chromophore, p-vinyloxymethyl benzonitrile

CORC > 北京大学 > 化学与分子工程学院

	Synthesis and "structural self-quenching effect" of vinyl monomers bearing electron-accepting chromophore, p-vinyloxymethyl benzonitrile
	Du, FS ; Li, FM
刊名	高分子学报
	1998
关键词	p-vinyloxymethylbenzonitrile absorption spectrum fluorescence structural self-quenching effect PHOTOCHEMICAL BEHAVIOR MOIETIES POLYMERS INITIATION
英文摘要	A vinyloxy monomer bearing of electron-accepting chromophore, p-vinyloxymethylbenzonitrile ( VOMBN) and its saturated model compound, p-ethoxymethylbenzonitrile (EOMBN), were synthesized. VOMBN can be cationically homopolymerized by initiation of Lewis acid such as BF3. Et2O and copolymerized with maleic anhydride (MAn) using AIBN as an initiator. By fluorescence study, it has been found that the fluorescence in tensity of VOMBN is much lower than those of the copolymer P(Vo-MAn) and EOMBN at the same chromophore concentration. This means that a "Structural Self-Quenching Effect" (SSQE) has been also observed in VOMBN, which is attributed to the charge transfer interaction between the electron-accepting cyanophenyl chromophore and the electron-donating vinyloxy group in the same molecule upon UV irradiation. The fluorescence of EOMBN and P(Vo-MAn) can be quenched by a series of electron-rich vinyloxy compounds such as dihydrofuran (2H-furan), dihydropyran (2H-pyran), furan and ethyl vinyl ether(EVE), which do not have chromophore moieties. It is found that the higher the electron-donating ability of the quenchers which are represented by their ionization potentials, the higher the quenching efficiency.; Polymer Science; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 0; 2; 232-235
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/312886]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Du, FS,Li, FM. Synthesis and "structural self-quenching effect" of vinyl monomers bearing electron-accepting chromophore, p-vinyloxymethyl benzonitrile[J]. 高分子学报,1998.
APA	Du, FS,&Li, FM.(1998).Synthesis and "structural self-quenching effect" of vinyl monomers bearing electron-accepting chromophore, p-vinyloxymethyl benzonitrile.高分子学报.
MLA	Du, FS,et al."Synthesis and "structural self-quenching effect" of vinyl monomers bearing electron-accepting chromophore, p-vinyloxymethyl benzonitrile".高分子学报 (1998).