Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer

	Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer
	Yang, Yang 1; Chen, Jun-Sheng 1,2; Liu, Jian-Yong 1; Zhao, Guang-Jiu 1; Liu, Lei 1; Han, Ke-Li 1; Cook, Timothy R.3; Stang, Peter J.4
刊名	journal of physical chemistry letters
	2015-05-21
卷号	6 期号:10 页码:1942-1947
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.
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
关键词[WOS]	density-functional calculations ; bimetallic platinum complexes ; excited-states ; water ; design ; photosensitizers ; polymetallaynes ; metallacycles ; fluorescence ; performance
收录类别	SCI
语种	英语
WOS记录号	WOS:000355158600026
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146266]
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.SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA 4.Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	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.
APA	Yang, Yang.,Chen, Jun-Sheng.,Liu, Jian-Yong.,Zhao, Guang-Jiu.,Liu, Lei.,...&Stang, Peter J..(2015).Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer.journal of physical chemistry letters,6(10),1942-1947.
MLA	Yang, Yang,et al."Photophysical Properties of a Post-Self-Assembly Host/Guest Coordination Cage: Visible Light Driven Core-to-Cage Charge Transfer".journal of physical chemistry letters 6.10(2015):1942-1947.