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Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy
Lou, Zhangrong1,2; Hou, Yuqi1; Chen, Kepeng1; Zhao, Jianzhang1; Ji, Shaomin3; Zhong, Fangfang1; Dede, Yavuz4; Dick, Bernhard5
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2018-01-11
ISSN1932-7447
DOI10.1021/acs.jpcc.7b10466
Volume122Issue:1Pages:185-193
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordTRANSITION-METAL-COMPLEXES ; UP-CONVERSION ; PHOTODYNAMIC THERAPY ; MOLECULAR DESIGN ; ENERGY-TRANSFER ; FLUORESCENCE ; VISCOSITY ; LIGHT ; PHOSPHORESCENCE ; ENHANCEMENT
AbstractIt 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%.
Language英语
WOS IDWOS:000422814200020
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168473
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhao, Jianzhang; Ji, Shaomin; Dede, Yavuz; Dick, Bernhard
Affiliation1.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
Recommended Citation
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.
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