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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
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2017-07-13
DOI10.1021/acs.jpcc.7b05025
121期:27页:14975-14980
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]CYCLOMETALATED PLATINUM(II) COMPLEXES ; ACTIVATED DELAYED FLUORESCENCE ; PHOTOPHYSICAL PROPERTIES ; PHOTODYNAMIC THERAPY ; EXCIMER FORMATION ; CHARGE SEPARATION ; ELECTRON-TRANSFER ; SINGLET FISSION ; FLUID SOLUTIONS ; DERIVATIVES
英文摘要An 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.
语种英语
WOS记录号WOS:000405761600068
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152051
专题中国科学院大连化学物理研究所
作者单位1.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
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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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