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Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle
Zhang, Rui-Ling1,2; Yang, Yang1; Yang, Song-Qiu1; Neti, VenKata S. Pavan K.3; Sepehrpour, Hajar3; Stang, Peter J.3; Han, Ke-Li1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2017-07-13
DOI10.1021/acs.jpcc.7b05025
Volume121Issue:27Pages:14975-14980
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 KeywordCYCLOMETALATED PLATINUM(II) COMPLEXES ; ACTIVATED DELAYED FLUORESCENCE ; PHOTOPHYSICAL PROPERTIES ; PHOTODYNAMIC THERAPY ; EXCIMER FORMATION ; CHARGE SEPARATION ; ELECTRON-TRANSFER ; SINGLET FISSION ; FLUID SOLUTIONS ; DERIVATIVES
AbstractAn interesting triplet excited-state absorption-emission conversion of a fullerene-functionalized Pt(II) metallacycle (C-60-Pt) caused by a concentration effect was directly observed by nanosecond transient absorption (ns TA) spectroscopy. In dilute solution, the triplet excited-state absorption (TESA) band was observed at about 750 nm with a lifetime of ca. 10.7 mu s. However, with increasing the concentration, the absorption band converted to a triplet excited-state emission (TESE) band with a longer lifetime of ca. 15.4 mu s. Femtosecond transient absorption experiments and quantum chemistry calculations were performed to reveal the excited-state decay pathways of C-60-Pt in concentrated solution. This conversion was ascribed to the formation of a triplet excimer, which forms at localized 3C*(60) states. This work demonstrates that radiative excimers with longer-lived triplet excited states can exist in concentrated solution, and this finding will provide useful information for applications of fullerene complexes, especially as photosensitizers.
Language英语
WOS IDWOS:000405761600068
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/152051
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA
Recommended Citation
GB/T 7714
Zhang, Rui-Ling,Yang, Yang,Yang, Song-Qiu,et al. Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(27):14975-14980.
APA Zhang, Rui-Ling.,Yang, Yang.,Yang, Song-Qiu.,Neti, VenKata S. Pavan K..,Sepehrpour, Hajar.,...&Han, Ke-Li.(2017).Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle.JOURNAL OF PHYSICAL CHEMISTRY C,121(27),14975-14980.
MLA Zhang, Rui-Ling,et al."Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle".JOURNAL OF PHYSICAL CHEMISTRY C 121.27(2017):14975-14980.
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