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Unveiling excited state energy transfer and charge transfer in a host/guest coordination cage
Zhang, Rui-Ling1,2; Yang, Yang1; Yang, Song-Qiu1; Han, Ke-Li1
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2018-01-28
ISSN1463-9076
DOI10.1039/c7cp06577a
Volume20Issue:4Pages:2205-2210
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordPHOTOPHYSICAL PROPERTIES ; ELECTRON-TRANSFER ; ACETYLIDE COMPLEXES ; SEPARATION ; RELAXATION ; GUESTS ; METALLACYCLES ; FLUORESCENCE ; EMISSIONS ; FRAMEWORK
AbstractHost-guest charge transfer (HGCT) plays a key role in applications from solar energy conversion to photocatalysis. Herein, a HGCT system, a pillared Pt(II) metallacage with encapsulated coronene was synthesized and the ultrafast excited-state dynamics were investigated by combination of femtosecond transient absorption spectroscopy, nanosecond transient emission spectrocopy and quantum chemistry calculations. Two significant ultrafast dynamic processes were unveiled: (i) charge transfer from a singlet local excited ((LE)-L-1) state associated with the coronene moiety to a (1)HGCT state with tau = 9.5 ps; and (ii) triplet-triplet energy transfer from a high (3)HGCT state to a (LE)-L-3 state with tau = 139.5 ps. The resulting long-lived species, the lowest (LE)-L-3 and (3)HGCT states eventually decay to the ground state in microsecond time scales of 5.2 and 43.4 mu s respectively. Moreover, a clear mechanism depicting the main excited-state decay pathways connecting the initial photoexcited transients with the resulting species was proposed.
Language英语
WOS IDWOS:000423505500008
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168623
Collection中国科学院大连化学物理研究所
Corresponding AuthorHan, Ke-Li
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
Recommended Citation
GB/T 7714
Zhang, Rui-Ling,Yang, Yang,Yang, Song-Qiu,et al. Unveiling excited state energy transfer and charge transfer in a host/guest coordination cage[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2018,20(4):2205-2210.
APA Zhang, Rui-Ling,Yang, Yang,Yang, Song-Qiu,&Han, Ke-Li.(2018).Unveiling excited state energy transfer and charge transfer in a host/guest coordination cage.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,20(4),2205-2210.
MLA Zhang, Rui-Ling,et al."Unveiling excited state energy transfer and charge transfer in a host/guest coordination cage".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 20.4(2018):2205-2210.
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