Synthesis of bismaleimides bearing electron-donating chromophores and   their fluorescence behavior during copolymerization

doi:10.1021/ma0205111

CORC > 北京大学 > 化学与分子工程学院

	Synthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization
	Zhang, X ; Jin, YH ; Diao, HX ; Du, FS ; Li, ZC ; Li, FM
刊名	macromolecules
	2003
关键词	UV-REFLECTION SPECTROSCOPY PHOTOINITIATED POLYMERIZATION PHOTOCHEMICAL BEHAVIOR CURE CHARACTERIZATION OPTICAL APPLICATIONS POLYURETHANE-UREA VINYLOXY MONOMER ACRYLIC-MONOMERS CROSS-LINKING POLYMERS
DOI	10.1021/ma0205111
英文摘要	Bismaleimides and bisitaconimides bearing diphenylmethylamine, triphenylamine, or 2,5-diphenyl-1,3,4-oxadiazole chromophore (symbolized as A((=)-D()())-A((=))), as well as their saturated model compounds were synthesized, and their steady-state and time-resolved fluorescence spectra were investigated. These A((=))-D(()())-A((=)) monomers display strong intramolecular fluorescence quenching. Their fluorescence quantum yields and lifetimes are generally lower than those of their model compounds. It was found that the electron-poor C=C bond of maleimide-and itaconimide units (A((=))) plays a key role in the intramolecular quenching, which is correlated to the electron-accepting ability of A((=)) and the geometry arrangement between A((=)) and electron-donating chromophore (D(()*())). The intramolecular quenching was attributed to an intramolecular charge transfer interaction, which was confirmed by intermolecular fluorescence quenching and time-resolved fluorescence studies. On the basis of the intramolecular quenching, a new fluorescence approach can be developed to monitor the process of the polymerization and curing of bismaleimides, which can directly reflect the C=C bond consumption during polymerization and curing. The new fluorescence approach can be utilized not only by an intrinsic fluorescence technique but also by an extrinsic fluorescence technique.; Polymer Science; SCI(E); EI; 0; ARTICLE; 9; 3115-3127; 36
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/255914]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, X,Jin, YH,Diao, HX,et al. Synthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization[J]. macromolecules,2003.
APA	Zhang, X,Jin, YH,Diao, HX,Du, FS,Li, ZC,&Li, FM.(2003).Synthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization.macromolecules.
MLA	Zhang, X,et al."Synthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization".macromolecules (2003).