2-十八烷基-7,7,8,8-四氰基对醌二甲烷和3,3′,5,5′-四甲基联苯胺电荷转移配合物LB膜的制备和表征

高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (5): 935.doi:

2-十八烷基-7,7,8,8-四氰基对醌二甲烷和3,3′,5,5′-四甲基联苯胺电荷转移配合物LB膜的制备和表征

王一兵^1,2 , 芦菲^1,2, 魏平慧¹, 席时权¹, 王海水¹

1. 中国科学院长春应用化学研究所, 稀土化学与物理重点实验室, 长春 130022;
2. 中国科学院研究生院, 北京 100039

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-05-10 发布日期:2006-05-10
通讯作者: 王海水

Preparation and Characterization of Langmuir-Blodgett Film of Charge-transfer Complex of 2-Octadecyl-7,7,8,8-tetracyanoquino-dimethane and 3,3′,5,5′-Tetramethylbenzidine

WANG Yi-Bing^1,2, LU Fei^1,2, WEI Ping-Hui¹, XI Shi-Quan¹, WANG Hai-Shui^1*

1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-05-10 Published:2006-05-10
Contact: WANG Hai-Shui

摘要/Abstract

摘要：

利用LB技术制备了2-十八烷基-7,7,8,8-四氰基对醌二甲烷(C₁₈TCNQ)和3,3′,5,5′-四甲基联苯胺(TMB)的电荷转移配合物(CT complex)薄膜, 即TMB·C18TCNQ LB膜. 利用红外(IR)光谱、紫外-可见-近红外(UV-Vis-NIR)光谱以及原子力显微镜(AFM)研究了TMB·C₁₈TCNQ在LB膜中的分子取向、结构及表面形貌. 结果表明, 配合物为混合堆积类型, LB膜中电子给体TMB和电子受体C₁₈TCNQ的环面分别垂直于固体基板表面, 而且给体和受体以面对面的方式堆积. 5层TMB·C18TCNQ LB膜的AFM照片显示, 其表面形貌是由许多堆积在一起的六边形片状微晶组成的, 微晶的宽度约为180 nm. 与通过LB技术和掺杂技术制备的TMB·C₁₈TCNQ掺杂膜比较, TMB·C₁₈TCNQ LB膜具有明显不同的结构, 其长的脂肪烃链有向垂直于基板表面方向变化的趋势, LB膜与掺杂膜的表面形貌也有明显不同. 这表明不同的制备方法可以影响薄膜的结构和形貌.

关键词: 电荷转移配合物; LB膜; 制备方法; 结构

Abstract:

Langmuir-Blodgett(LB) films of the mixed-stack charge-transfer(CT) complex of 2-octadecyl-7,7,8,8-tetracyanoquinodimethane(C₁₈TCNQ) and 3,3′,5,5′-tetramethylbenzidine(TMB) were prepared. The structures, molecular orientation and morphology of TMB·C₁₈TCNQ in LB films were characterized by infrared(IR), ultraviolet-visible-near infrared(UV-Vis-NIR) spectroscopies and atomic force microscopy(AFM). From the UV-Vis-NIR and IR spectra, it could be concluded that the TMB·C₁₈TCNQ complex is in a mixed\|stacked arrangement style, and the chromophore planes of both C₁₈TCNQ and TMB are nearly perpendicular to the substrate surface. AFM image shows that the morphology of five-layer LB film of the complex consists of many two-dimensional hexagonal flake microcrystals. The width of these flake microcrystals is about 180 nm.

Key words: Charge-transfer complex; LB films; Preparation method; Structure

中图分类号:

O641.3
','1');return false;" target="_blank">
O641.3

TrendMD:

王一兵 ,芦菲,魏平慧,席时权,王海水 . 2-十八烷基-7,7,8,8-四氰基对醌二甲烷和3,3′,5,5′-四甲基联苯胺电荷转移配合物LB膜的制备和表征. 高等学校化学学报, 2006, 27(5): 935.

WANG Yi-Bing^1,2, LU Fei^1,2, WEI Ping-Hui¹, XI Shi-Quan¹, WANG Hai-Shui^1*. Preparation and Characterization of Langmuir-Blodgett Film of Charge-transfer Complex of 2-Octadecyl-7,7,8,8-tetracyanoquino-dimethane and 3,3′,5,5′-Tetramethylbenzidine. Chem. J. Chinese Universities, 2006, 27(5): 935.