Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy

doi:10.1021/acs.jpcc.7b10466

	Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy
	Lou, Zhangrong 1,2; Hou, Yuqi 1; Chen, Kepeng 1; Zhao, Jianzhang 1; Ji, Shaomin 3; Zhong, Fangfang 1; Dede, Yavuz 4; Dick, Bernhard 5
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2018-01-11
卷号	122 期号:1 页码:185-193
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.7b10466
文献子类	Article
英文摘要	It is well-known that the fluorescence of a chromophore can be efficiently quenched by the free rotor effect, sometimes called intramolecillar rotation (IMR), i.e. by a large-amplitude torsional motion. Using this effect, aggregation induced enhanced emission (AIE) and fluorescent molecular probes for viscosity measurements have been devised. However, the rotor effect on triplet excited states was rarely studied. Herein, with molecular rotors of Bodipy and diiodoBodipy, and by using steady state and time resolved transient absorption/emission spectroscopies, we confirmed that the triplet excited state-of the Bodipy chromophore is not quenched by IMR. This is in stark contrast to the fluorescence (singlet excited state), which is significantly quenched by IMR. This result is rather interesting since a long-lived excited state (triplet, 276 mu s) is not quenched by the IMR, but the short-lived excited state (singlet, 3.8 ns) is quenched by the same IMR The unquenched triplet excited state of the Bodipy was used for triplet-triplet annihilation upconversion, and the upconversion quantum yield is 6.3%.
WOS关键词	TRANSITION-METAL-COMPLEXES ; UP-CONVERSION ; PHOTODYNAMIC THERAPY ; MOLECULAR DESIGN ; ENERGY-TRANSFER ; FLUORESCENCE ; VISCOSITY ; LIGHT ; PHOSPHORESCENCE ; ENHANCEMENT
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000422814200020
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168472]
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
通讯作者	Zhao, Jianzhang; Ji, Shaomin; Dede, Yavuz; Dick, Bernhard
作者单位	1.Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, E-208 West Campus,2 Ling Gong Rd, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 3.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China 4.Gazi Univ, Dept Chem, TR-06500 Ankara, Turkey 5.Univ Regensburg, Inst Phys & Theoret Chem, Lehrstuhl Phys Chem, Univ Str 31, D-93053 Regensburg, Germany
推荐引用方式 GB/T 7714	Lou, Zhangrong,Hou, Yuqi,Chen, Kepeng,et al. Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(1):185-193.
APA	Lou, Zhangrong.,Hou, Yuqi.,Chen, Kepeng.,Zhao, Jianzhang.,Ji, Shaomin.,...&Dick, Bernhard.(2018).Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy.JOURNAL OF PHYSICAL CHEMISTRY C,122(1),185-193.
MLA	Lou, Zhangrong,et al."Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy".JOURNAL OF PHYSICAL CHEMISTRY C 122.1(2018):185-193.