一种用于光捕获天线的卟啉共价功能化单壁碳纳米管纳米杂化材料：合成与光物理性质

A nanohybrid material of SWNTs covalently functionalized with porphyrin for light harvesting antenna: synthesis and photophysical properties.

作者信息

Ren Dongmei, Guo Zhen, Du Feng, Zheng Jianyu, Chen Yongsheng

机构信息

State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.

出版信息

J Nanosci Nanotechnol. 2007 Apr-May;7(4-5):1539-45. doi: 10.1166/jnn.2007.656.

DOI:10.1166/jnn.2007.656

PMID:17450923

Abstract

Novel covalently porphyrin functionalized single-walled carbon nanotubes (SWNTs) were synthesized using carboxylic group functionalized carbon nanotubes (o-SWNTs) with meso-aniline substituted porphyrin. The structure and morphology of this SWNT nanohybrid material were fully characterized with FTIR, Raman, UV-Vis-NIR spectra as well as TGA and TEM measurements. The energy transfer efficiency from porphyrin to SWNTs and porphyrin fluorescence quenching mechanism were studied by means of steady state fluorescence and time-resolved fluorescence measurement. The fast and efficient electron transfer occurring in this nanohybrid illustrates that they can be utilized as a good candidate for light harvesting materials in molecular photonic devices and solar energy utilization.

摘要

使用带有中苯胺取代卟啉的羧基官能化碳纳米管（o-SWNTs）合成了新型共价卟啉功能化单壁碳纳米管（SWNTs）。通过傅里叶变换红外光谱（FTIR）、拉曼光谱、紫外-可见-近红外光谱（UV-Vis-NIR）以及热重分析（TGA）和透射电子显微镜（TEM）测量对这种SWNT纳米杂化材料的结构和形态进行了全面表征。通过稳态荧光和时间分辨荧光测量研究了从卟啉到SWNTs的能量转移效率以及卟啉荧光猝灭机制。这种纳米杂化材料中发生的快速高效电子转移表明，它们可作为分子光子器件和太阳能利用中光捕获材料的良好候选者。