一种噻吩基双偶极半菁与普鲁士蓝的静电自组装薄膜

引用本文: 王志平, 罗虹, 高丽华, 王科志. 一种噻吩基双偶极半菁与普鲁士蓝的静电自组装薄膜[J]. 物理化学学报, 2011, 27(03): 754-758. doi: 10.3866/PKU.WHXB20110313 shu

Citation: WANG Zhi-Ping, LUO Hong, GAO Li-Hua, WANG Ke-Zhi. Electrostatically Self-Assembled Films Prepared Using Bipolar Thiophene Hemicyanine and Prussian Blue[J]. Acta Physico-Chimica Sinica, 2011, 27(03): 754-758. doi: 10.3866/PKU.WHXB20110313 shu

一种噻吩基双偶极半菁与普鲁士蓝的静电自组装薄膜

基金项目:
国家自然科学基金(20971016, 90922004, 20871011) (20971016, 90922004, 20871011)

中央高校基本科研业务费专项基金, 北京市自然科学基金(2092011) (2092011)

北京师范大学测试基金资助项目

摘要:

通过交替沉积普鲁士蓝和一种含噻吩的半菁, 制备了一种新的无机-有机杂化静电自组装膜. 用紫外-可见吸收光谱、循环伏安技术和光电化学实验对薄膜进行了表征或光电性质研究. 376和698 nm处薄膜的吸光度随薄膜层数增加线性增加, 表明薄膜的沉积是均匀和可重复的. 薄膜中的普鲁士蓝具有良好的表面控制而非扩散控制的电化学活性, 膜的层数从1增加至5时, 阳极峰电流随膜层数增加而线性增加. 100 mW·cm^-2的白光照射下, 薄膜产生稳定的阴极光电流, 随层数增加线性增长, 层数增加到4层时, 光电流达到最大值. 饱和甘汞电极为参比电极, -0.4 V 偏压下, 4层薄膜产生的光电流密度高达0.28 μA·cm^-2.

关键词:

English

Electrostatically Self-Assembled Films Prepared Using Bipolar Thiophene Hemicyanine and Prussian Blue

1.
1. College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China;
2. Jining Teachers College, Jining 012000, Inner Mon lia, P. R. China;
3. School of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
Received Date: 30 November 2010
Available Online: 03 March 2011
Fund Project:
国家自然科学基金(20971016, 90922004, 20871011)

中央高校基本科研业务费专项基金, 北京市自然科学基金(2092011)

北京师范大学测试基金资助项目

Abstract:

We successfully prepared a novel inorganic-organic hybrid electrostatically self-assembled multilayer film by alternately depositing Prussian blue (PB) and a thiophene-containing hemicyanine. The optical, electrochemical, and photoelectrochemical properties of the as-prepared films were studied by UV-visible absorption spectroscopy, cyclic voltammetry, and photoelectrochemical experiment. Linear increases in the absorbances at 376 and 698 nm with the number of deposited layers, up to at least 8 layers, indicated that film deposition was uniform and reproducible. The PB in the prepared films was found to occur surface-confined rather than diffusion-controlled redox reactions and the peak currents increased with an increase in the number of layers up to 5 layers. Upon irradiation with 100 mW·cm^-2 white light the films exhibited stable and reproducible cathodic photocurrents, which increased as the number of layers increased up to 4 layers. A maximum photocurrent density of 0.28 μA·cm^-2 was found for the four-layer film at a bias voltage of -0.4 V vs the saturated calomel electrode.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

一种噻吩基双偶极半菁与普鲁士蓝的静电自组装薄膜

English

Electrostatically Self-Assembled Films Prepared Using Bipolar Thiophene Hemicyanine and Prussian Blue

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

一种噻吩基双偶极半菁与普鲁士蓝的静电自组装薄膜

English

Electrostatically Self-Assembled Films Prepared Using Bipolar Thiophene Hemicyanine and Prussian Blue

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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