Intramolecular Energy Transfer in S_1- and S_2-States of Porphyrin Trimers

Aiko Nakano; Yuzo Yasuda; Tomoko Yamazaki; Seiji Akimoto; Iwao Yamazaki; Hiroshi Miyasaka; Akira Itaya; Masataka Murakami; Atsuhiro Osuka

首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Intramolecular Energy Transfer in S_1- and S_2-States of Porphyrin Trimers

【24h】

Intramolecular Energy Transfer in S_1- and S_2-States of Porphyrin Trimers

机译：卟啉三聚体S_1和S_2状态的分子内能量转移

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

A set of four porphyrin trimers (1-4) consisting of an energy-accepting 5,15-diphenylethynyl-substituted Zn(II)-porphyrin core flanked by two energy-donating peripheral Zn(II)-porphyrins have been prepared as a new efficient energy-transfer functional unit. The peripheral porphyrin donor is either a TPP-type Zn(II)-porphyrin for 1 and 2 or a OEP-type Zn(II)-porphyrin for 3 and 4 and the diphenylethynyl substitution axis of the core porphyrin is aligned either orthogonal in 1 and 3 or parallel in 2 and 4 with respect to the long axis of the trimeric arrays. Femtosecond transient absorption spectroscopy and femtosecond up-conversion fluorescence measurement have revealed the very efficient S_1-S_1 energy-transfer reactions in these porphyrin trimers. The S_1-S_1 energy transfer is faster in the parallel trimers 2 and 4 than in the orthogonal trimers 1 and 3, reflecting larger electronic coupling in the former pair. The peripheral porphyrin S_2-state lifetime is considerably shortened in 1-4, which has been ascribed to S_2-S_2 energy transfer. Probably the strong Soret-transitions of both the donor and acceptor lead to large Coulombic interactions, thereby rendering S_2-S_2 energy transfer effective enough to compete with rapid internal conversion to S_1-state. These results encourage a new strategy for construction of porphyrin-based supramolecular artificial photosynthetic antenna.

机译：作为一种新的化合物，已制备了一组四个卟啉三聚体（1-4），它们由一个受能的5,15-二苯基乙炔基取代的Zn（II）-卟啉核与两个供能的外围Zn（II）-卟啉构成。高效的能量传递功能单元。外围卟啉供体是1和2的TPP型Zn（II）-卟啉或3和4的OEP型Zn（II）卟啉，并且核心卟啉的二苯基乙炔基取代轴在1中正交相对于三聚体阵列的长轴为3和2或4平行。飞秒瞬态吸收光谱和飞秒上转换荧光测量表明，在这些卟啉三聚体中非常有效的S_1-S_1能量转移反应。平行三聚体2和4中的S_1-S_1能量传递比正交三聚体1和3中的S_1-S_1能量传递更快，这反映了前一对中的电子耦合更大。外周卟啉S_2状态的寿命在1-4中大大缩短，这归因于S_2-S_2的能量转移。供体和受体的强Soret跃迁可能导致大的库仑相互作用，从而使S_2-S_2能量转移足够有效以与快速内部转化为S_1状态竞争。这些结果为构建基于卟啉的超分子人工光合天线提供了新的策略。

著录项

来源
《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2001年第20期|共12页
作者
Aiko Nakano; Yuzo Yasuda; Tomoko Yamazaki; Seiji Akimoto; Iwao Yamazaki; Hiroshi Miyasaka; Akira Itaya; Masataka Murakami; Atsuhiro Osuka;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词

相似文献

外文文献
中文文献
专利

1. Intramolecular Energy Transfer in S_1- and S_2-States of Porphyrin Trimers [J] . Aiko Nakano, Yuzo Yasuda, Tomoko Yamazaki, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2001,第20期

机译：卟啉三聚体S_1和S_2状态的分子内能量转移
2. Intramolecular Energy Transfer in a Covalently Linked Copper(II) Porphyrin-Free Base Porphyrin Dimer: Novel Spin Polarization in the Energy Acceptor [J] . Motoko Asano-Someda, Art van der Est, Uew Kruger, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 1999,第34期

机译：共价连接的铜（II）卟啉无基卟啉二聚体中的分子内能量转移：能量受体中的新型自旋极化。
3. Excitation energy transfer and photo-induced electron transfer in axial bispyrenyl phosphorus porphyrin derivatives: factors governing the competition between energy and electron transfer processes under the existence of intramolecular #pi#-#pi# inte [J] . Kazutaka Hirakawa, Hiroshi Segawa, Hiroshi Segawa Journal of Photochemistry and Photobiology, A. Chemistry . 1999,第1a3期

机译：轴向异戊烯基磷卟啉衍生物中的激发能量转移和光诱导的电子转移：控制能源与电子转移过程竞争的因素#pi＃ - ＃pi＃inte
4. SMALL REORGANIZATION ENERGY OF INTRAMOLECULAR ELECTRON TRANSFER IN BACTERIOCHLORIN-,CHLORIN-,AND PORPHYRIN-C_(60) DYADS [C] . Kei Ohkubo, Hiroshi Imahori, Jianguo Shao, Meeting of the Electrochemical Society . 2002

机译：细菌氯素，氯和卟啉-C_（60）二元的分子内电子转移的小重组能量
5. Porphyrin dyes for photovoltaic sensitization: Effects of dye design on porphyrin assembly structure, energy transfer, and solar cell performance. [D] . Jensen, Rebecca Ann. 2010

机译：用于光伏增感的卟啉染料：染料设计对卟啉组装结构，能量转移和太阳能电池性能的影响。
6. Generation of Phosphorescent Triplet States via Photoinduced Electron Transfer: Energy and Electron Transfer Dynamics in Pt Porphyrin-Rhodamine B Dyads [O] . Tomoyasu Mani, Dariusz M. Niedzwiedzki, Sergei A. Vinogradov -1

机译：通过光致电子转移产生磷光三重态的状态：Pt卟啉-rhodamine B dyads中的能量和电子转移动力学
7. Transient absorption anisotropy study of ultrafast energy transfer in porphyrin monomer, its direct meso–meso coupled dimer and trimer [O] . Chang-Ki Min, Taiha Joo, Min-Chul Yoon, 2001

机译：尿素单体中超快能量转移的瞬态吸收各向异性研究，其直接中间胶囊耦合二聚体和三聚体
8. Fluorinated Dodecaphenylporphyrins: Synthetic and Electrochemical Studies Including the First Evidence of Intramolecular Electron Transfer Between an Fe(II) Porphyrin -Anion Radical and an Fe(I) Porphyrin;Inorganic Chemistry [R] . D'Souza, F. , Forsyth, T. P. , Fukuzumi, S. , 1998

机译：氟化十二烷基卟啉：合成和电化学研究，包括Fe（II）卟啉 - 阴离子自由基和Fe（I）卟啉之间的分子内电子转移的第一证据;无机化学

Intramolecular Energy Transfer in S_1- and S_2-States of Porphyrin Trimers

摘要

著录项

相似文献

相关主题

期刊订阅