DICP OpenIR
学科主题物理化学
Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries
Chen, Jun-Sheng1,2; Zhao, Guang-Jiu1; Cook, Timothy R.3; Han, Ke-Li1; Stang, Peter J.3; Han KL(韩克利); Peter J. Stang
刊名JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2013-05-01
ISSN0002-7863
DOI10.1021/ja402421w
135期:17页:6694-6702
收录类别SCI
合作性质
文章类型Article
部门归属11
项目归属1101
产权排名待补充
WOS标题词Science & Technology ; Physical Sciences
资助者1,1 ; 1,1 ; 1,1 ; 1,1
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]DENSITY-FUNCTIONAL CALCULATIONS ; TRIPLET EXCITED-STATES ; GAUSSIAN-BASIS SETS ; CHARGE-TRANSFER ; MOLECULAR DESIGN ; ATOMS LI ; COMPLEXES ; COORDINATION ; FLUORESCENCE ; SYMMETRY
英文摘要In this work, spectroscopic techniques and quantum chemistry calculations were used to investigate the photophysical properties of various multinuclear platinum complexes with different conformational geometries. This suite of complexes includes a Pt-pyridyl square, a Pt-carboxylate triangle, and a mixed Pt-pyridyl-carboxylate rectangle, as well as two mononuclear Pt model complexes. Studying the individual molecular precursors in the context of larger assemblies is important to provide a complete understanding of the factors governing the observed photophysical properties of a given system. The absorption and emission bands of the parent linear dipyridyl donor (ligand 1) are largely preserved in the [4 + 4] square and the multicomponent [4 + 2 + 2] rectangle (3 and 4, respectively), with significant red shifts. The [3 + 3] Pt-carboxylate triangle containing p-phthalic acid is nonemissive. Phosphorescence and nanosecond transient spectroscopy on 3 and 4 reveal that the introduction of platinum atoms enhances spin-orbital coupling, thereby increasing the rate of intersystem crossing. This phenomenon is consistent with the low fluorescence quantum yields and short fluorescence lifetimes of 3 and 4. Moreover, the electronic structures for the ground state and low-lying excited states of these compounds were studied using quantum chemistry calculations. The fluorescent states of the platinum complexes are local excited states of ligand-centered pi-pi* transition features, whereas the nonfluorescent states are intramolecular charge-transfer states. These low-lying intramolecular charge-transfer states are responsible for the nonemissive nature of small molecules 1 and 2 and triangle S. As the interactions between these components determine the properties of their corresponding assemblies, we establish novel excited-state decay mechanisms which dictate the observed spectra.
语种英语
资助者1,1 ; 1,1 ; 1,1 ; 1,1
原文出处查看原文
WOS记录号WOS:000318469100046
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/119411
专题中国科学院大连化学物理研究所
通讯作者Han KL(韩克利); Peter J. Stang
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
Chen, Jun-Sheng,Zhao, Guang-Jiu,Cook, Timothy R.,et al. Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2013,135(17):6694-6702.
APA Chen, Jun-Sheng.,Zhao, Guang-Jiu.,Cook, Timothy R..,Han, Ke-Li.,Stang, Peter J..,...&Peter J. Stang.(2013).Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,135(17),6694-6702.
MLA Chen, Jun-Sheng,et al."Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 135.17(2013):6694-6702.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
2013mky2RC6S10.PDF(547KB) 开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, Jun-Sheng]的文章
[Zhao, Guang-Jiu]的文章
[Cook, Timothy R.]的文章
百度学术
百度学术中相似的文章
[Chen, Jun-Sheng]的文章
[Zhao, Guang-Jiu]的文章
[Cook, Timothy R.]的文章
必应学术
必应学术中相似的文章
[Chen, Jun-Sheng]的文章
[Zhao, Guang-Jiu]的文章
[Cook, Timothy R.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。