一种带有酯基并键合电子给体的新型Ru（bpy）3的设计、合成及光谱和电化学性能

化学学报 ›› 2004, Vol. 62 ›› Issue (7): 713-719. 上一篇下一篇

研究论文

一种带有酯基并键合电子给体的新型Ru（bpy）₃的设计、合成及光谱和电化学性能

施锋, 李宏洋, 彭孝军, 孙立成, 孙世国, 陈小强, 张蓉

大连理工大学精细化工国家重点实验室, 大连, 116012

投稿日期:2003-07-15 修回日期:2003-10-14 发布日期:2014-02-18
通讯作者: 彭孝军,E-mail:pengxj@chem.dlut.edu.cn E-mail:pengxj@chem.dlut.edu.cn
基金资助:
国家自然科学基金(Nso.20376010,20128005)资助项目.

Synthesis and Spectral Properties of a New Ruthenium(Ⅱ) Tris-bipyridine with Four Ester Groups and Substituted Phenol

SHI Feng, LI Hong-Yang, PENG, Xiao-Jun, SUN Li-Cheng, SUN Shi-Guo, CHEN Xiao-Qiang, ZHANG Rong

State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012

Received:2003-07-15 Revised:2003-10-14 Published:2014-02-18

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摘要/Abstract

设计、合成了一种新型Ru(bpy)₃类的光敏染料,利用ESI-MS 和1D, 2D-NMR (gCOSY, HSQC和HMBC)对化合物的结构进行了鉴定,并通过UV-vis、荧光光谱、闪光光解及电化学对其光谱和氧化还原特性进行了研究.结果表明:四个酯基及给电子配体的引入,改变了配合物的光谱特性和氧化还原电位,使其MLCT带的最大吸收波长与 [Ru(bpy)₃]²⁺相比发生了红移,拓宽了光谱的吸收范围,提高了对太阳能的利用效率;³MLCT激发态寿命长,有利于发生分子内电子转移;在较宽的电位范围内具有很好的氧化-还原可逆性,且氧化电位Ru³⁺/Ru²⁺与[Ru(bpy)₃]²⁺相比提高了～360 mV,增强了电子传递的驱动力,说明该染料是一种潜在的太阳能电池的光敏剂.

关键词: 光敏染料, 太阳能电池, 含酚配体, 荧光光谱, 闪光光解, 氧化还原电位

A new ruthenium(Ⅱ) complex (1) with four ester groups have been designed and synthesized, in which a phenol substituted by {[(2-hydroxy-3-(morpholin-4-ylmethyl)-5-tert-butylbenzyl)(pyridyl-2-methyl)amino]methyl} groups was covalently linked to ruthenium(Ⅱ) tris-bipyridine. The structure of complex 1 was characterized by electrospray ionization mass spectrometer (ESI-MS) and 1D-NMR, 2D-NMR (gCOSY, HSQC and HMBC) spectra. The electrochemical and spectral properties were also studied. Introduction of the four carboxyl acid groups and the donor ligand tuned the spectra and the redox properties of compound 1. The MLCT transition was turned from 451 to 474 nm and the complex had long lifetime of the ³MLCT state emission. Moreover, the oxidation potential of Ru³⁺/Ru²⁺ of compound 1 was ～360 mV higher than that of [Ru(bpy)₃]²⁺ which would enhance the driving-force of electron transfer. These results showed that the compound 1 had proper redox potentials and was suitable for being used as photosensitizer of solar cell.

Key words: photosensitizer, solar cell, phenolate ligand, fluorescent spectra, flash photolysis, redox potential

引用此文

施锋, 李宏洋, 彭孝军, 孙立成, 孙世国, 陈小强, 张蓉. 一种带有酯基并键合电子给体的新型Ru（bpy）₃的设计、合成及光谱和电化学性能[J]. 化学学报, 2004, 62(7): 713-719.

SHI Feng, LI Hong-Yang, PENG, Xiao-Jun, SUN Li-Cheng, SUN Shi-Guo, CHEN Xiao-Qiang, ZHANG Rong. Synthesis and Spectral Properties of a New Ruthenium(Ⅱ) Tris-bipyridine with Four Ester Groups and Substituted Phenol[J]. Acta Chimica Sinica, 2004, 62(7): 713-719.

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一种带有酯基并键合电子给体的新型Ru（bpy）₃的设计、合成及光谱和电化学性能

Synthesis and Spectral Properties of a New Ruthenium(Ⅱ) Tris-bipyridine with Four Ester Groups and Substituted Phenol

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