Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle

doi:10.1021/acs.jpcc.7b05025

	Direct Observation of a Triplet-State Absorption-Emission Conversion in a Fullerene-Functionalized Pt(II) Metallacycle
	Zhang, Rui-Ling 1,2; Yang, Yang 1; Yang, Song-Qiu 1; Neti, VenKata S. Pavan K.3; Sepehrpour, Hajar 3; Stang, Peter J.3; Han, Ke-Li 1
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2017-07-13
卷号	121 期号:27 页码:14975-14980
DOI	10.1021/acs.jpcc.7b05025
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
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/152051]
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.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
推荐引用方式 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.