Photoswitching of the Triplet Excited State of DiiodoBodipy-Dithienylethene Triads and Application in Photo-Controllable Triplet-Triplet Annihilation Upconversion

	Photoswitching of the Triplet Excited State of DiiodoBodipy-Dithienylethene Triads and Application in Photo-Controllable Triplet-Triplet Annihilation Upconversion
	Ma, Jie 1; Cui, Xiaoneng 1; Wang, Fen 1,2; Wu, Xueyan 1; Zhao, Jianzhang 1; Li, Xingwei 2
刊名	journal of organic chemistry
	2014-11-21
卷号	79 期号:22 页码:10855-10866
英文摘要	dithienylethene (dte)-2,6-diiodobodipy triads were prepared with the aim to photoswitch the triplet excited state of the 2,6-diiodobodipy moiety. bodipy was selected due to its low t-1 state energy level to avoid sensitized photocyclization of dte, which is very often encountered in dte photoswitches, so that the photochemistry of dte and the organic chromophore can be addressed independently. this is the first time that dte was covalently connected with an organic triplet photosensitizer. for the triad with dte-o structure, selective photoexcitation into the diiodobodipy part did not initiate photocyclization of dte-o. upon photoirradiation at 254 nm, thus the dte-o -> dte-c transformation, the intersystem crossing (isc) of 2,6-diiodobodipy moiety was competed by the photoactivated resonance energy transfer (ret), with bodipy as the intramolecular energy donor and dte-c as energy acceptor. the fluorescence of bodipy was quenched and the triplet state lifetime of bodipy was reduced from 105.1 to 40.9 mu s. the photoreversion is o-2-independent, but can be greatly accelerated upon selective photoexcitation into the diiodobodipy absorption band (at 535 nm). we concluded that isc is not outcompeted by ret. the photoswitching of the triplet state was transduced to the singlet oxygen photosensitizing, as well as triplet-triplet annihilation upconversion.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, organic
研究领域[WOS]	chemistry
关键词[WOS]	containing 1,10-phenanthroline ligand ; cyclometalated ir(iii) complexes ; energy-transfer cassettes ; iridium complexes ; low-power ; photodynamic therapy ; electron-transfer ; singlet oxygen ; photochromic switches ; bodipy chromophore
收录类别	SCI ; IC
语种	英语
WOS记录号	WOS:000345470900014
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145762]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jie,Cui, Xiaoneng,Wang, Fen,et al. Photoswitching of the Triplet Excited State of DiiodoBodipy-Dithienylethene Triads and Application in Photo-Controllable Triplet-Triplet Annihilation Upconversion[J]. journal of organic chemistry,2014,79(22):10855-10866.
APA	Ma, Jie,Cui, Xiaoneng,Wang, Fen,Wu, Xueyan,Zhao, Jianzhang,&Li, Xingwei.(2014).Photoswitching of the Triplet Excited State of DiiodoBodipy-Dithienylethene Triads and Application in Photo-Controllable Triplet-Triplet Annihilation Upconversion.journal of organic chemistry,79(22),10855-10866.
MLA	Ma, Jie,et al."Photoswitching of the Triplet Excited State of DiiodoBodipy-Dithienylethene Triads and Application in Photo-Controllable Triplet-Triplet Annihilation Upconversion".journal of organic chemistry 79.22(2014):10855-10866.