Gao Lihua, Lu Shan, Su Jingping, Wang Kezhi
Department of Chemistry, School of Science, Beijing Technology and Business University, 100048, China.
J Nanosci Nanotechnol. 2013 Feb;13(2):1377-80. doi: 10.1166/jnn.2013.6039.
A new electrostatically self-assembled film has successfully been prepared on quartz and indium-tin-oxide (ITO) substrates by alternating adsorption of BW11Zn(H2O)O39 (BW11Zn) and a hemicyanine of (E)-1,1'-(hexane-1,6-diyl)bis(4-(4-(dimethylamino)styryl)pyridinium) bromide (H6Br2). The UV-visible absorption spectra showed that the film was uniformly deposited and the interaction between the two film-forming components occurred in the film. The (BW11Zn/H6)n film exhibited stable cathodic photocurrent as irradiated with white light. The photocurrents were found to increase linearly with increasing the deposited bilayers increased up to 3 layers. The photocurrent action spectrum indicated that the cathodic photocurrents were generated from charge transfer excitation of H6 in the (BW11Zn/H6)n film. The effects of applied bias voltages, electron donor and acceptor added in the electrolyte, and layer number n of (BW11Zn/H6)n film on the photocurrent generation have also been examined.
通过交替吸附BW11Zn(H2O)O39（BW11Zn）和(E)-1,1'-（己烷-1,6-二基）双（4-（4-（二甲基氨基）苯乙烯基）吡啶鎓）溴化物（H6Br2）的半菁，已成功在石英和氧化铟锡（ITO）衬底上制备了一种新型静电自组装膜。紫外可见吸收光谱表明该膜均匀沉积，且两种成膜组分之间在膜中发生了相互作用。(BW11Zn/H6)n膜在白光照射下表现出稳定的阴极光电流。发现光电流随着沉积双层数增加至3层而线性增加。光电流作用光谱表明阴极光电流是由(BW11Zn/H6)n膜中H6的电荷转移激发产生的。还研究了施加偏压、电解质中添加的电子供体和受体以及(BW11Zn/H6)n膜的层数n对光电流产生的影响。
