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题名: Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer
作者: Yang, Yang1;  Chen, Jun-Sheng1, 2;  Liu, Jian-Yong1;  Zhao, Guang-Jiu1;  Liu, Lei1;  Han, Ke-Li1;  Cook, Timothy R.3;  Stang, Peter J.4
刊名: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
发表日期: 2015-05-21
DOI: 10.1021/acs.jpclett.5b00783
卷: 6, 期:10, 页:1942-1947
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 ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: Supramolecular systems are capable of unique photophysical properties due to possible interactions between subcomponents, such as between an encapsulated molecule and its cage in a host/guest environment. Here, we report that the encapsulation of a chromophore by a metallacage dramatically enhances its photophysical properties. In the visible region, the encapsulated photosensitizer achieves a 6.5-fold enhancement to its absorptivity. The triplet lifetime of the encapsulated photosensitizer is three times longer than that of its free analogue. These enhancements are attributed to two key factors: (i) encapsulation-induced core-to-cage charge transfer (CCCT) generates new visible-light absorbing states, accounting for the enhanced absorption, and (ii) the microenvironment inside the metallacage inhibits nonradiative decay processes, resulting in prolonged triplet lifetime. The CCCT arises from the electrostatic interaction between the delocalized electrons of the guest coronene and the positive charge associated with the metallacage host. The work herein provides insight into the CCCT phenomenon.
关键词[WOS]: DENSITY-FUNCTIONAL CALCULATIONS ;  BIMETALLIC PLATINUM COMPLEXES ;  EXCITED-STATES ;  WATER ;  DESIGN ;  PHOTOSENSITIZERS ;  POLYMETALLAYNES ;  METALLACYCLES ;  FLUORESCENCE ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000355158600026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146266
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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.SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA
4.Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA

Recommended Citation:
Yang, Yang,Chen, Jun-Sheng,Liu, Jian-Yong,et al. Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2015,6(10):1942-1947.
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