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题名: Photophysical Properties of Coordination-Driven Self-Assembled Metallosupramolecular Rhomboids: Experimental and Theoretical Investigations
作者: Zhao, Guang-Jiu1;  Northrop, Brian H.2;  Stang, Peter J.2;  Han, Ke-Li1
通讯作者: Peter J.Stang ;  韩克利
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2010-03-18
DOI: 10.1021/jp911597z
卷: 114, 期:10, 页:3418-3422
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: In this work, the photophysical properties of coordination-driven self-assembled metallosupramolecular rhomboids with the donor ligands 1,2-bis(3-pyridyl)ethyne (3a) and 1,4-bis(3-pyridyl)-1,3-butadiyne (3b) are investigated by use of both spectroscopic experiments and quantum chemistry Calculations. All the geometric conformations of the chair and boat conformers of 3a and 3b are fully optimized using density functional theory. The time-dependent density functional theory method was also used to Study the excited-state properties of these self-assembled metallosupramolecular rhomboids. At the same time, steady-state absorption and fluorescence as well as the time-correlated single Photon Counting techniques are Used to measure their various spectral properties. The fluorescence spectra of these self-assembled metallosupramolecular rhomboids are very wide and show an evident two-peak feature, which can he tuned by different excitation wavelengths. It has been demonstrated that the chair conformers of both 3a and 3b are formed preferentially Over their boat conformers due to the close proximity of the chelated bisphosphine platinum groups. Moreover, all additional shoulder observed at 4 16 nm in the fluorescence spectra of 3b indicates the presence of minor amounts of the boat conformer of 3b. In addition, we have also demonstrated that lengthening the acetylene chain of the donor ligand component of these rhomboids results in a red-shifted and broadened absorption band for these metallosupramolecular rhomboids. Furthermore, the nature of the excited states for these metallosupramolecular rhomboids varies with the acetylene chain length of the donor ligands and with the different conformers.
关键词[WOS]: PROTEIN CHROMOPHORE MODELS ;  RESONANCE ENERGY-TRANSFER ;  SUPRAMOLECULAR RECTANGLE ;  FLUORESCENT PROTEIN ;  MOLECULAR-TEMPLATE ;  CIRCULAR-DICHROISM ;  AU(111) SURFACES ;  STATE ;  TETRANUCLEAR ;  POLYGONS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000275327600006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103299
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 Utah, Dept Chem, Salt Lake City, UT 84112 USA

Recommended Citation:
Zhao, Guang-Jiu,Northrop, Brian H.,Stang, Peter J.,et al. Photophysical Properties of Coordination-Driven Self-Assembled Metallosupramolecular Rhomboids: Experimental and Theoretical Investigations[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2010,114(10):3418-3422.
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