An electrostatically self-assembled hybrid film based on dinuclear ruthenium(II) polypyridyl complex and europium-substituted tungstoborate

作者：Zhang, Honglei; Qi, Jianmin; Gao, Lihua^*; Wang, Kezhi

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2016, 492: 119-126.

DOI：10.1016/j.colsurfa.2015.12.027

• Thin film
• Ruthenium
• Polyoxometalate
• Photoelectrochemical property

A new electrostatically self-assembled hybrid film consisting of alternating layers of europium substituted tungstoborate anion of [Eu(BW11O39)(2)](15-) (EuBW) and dinuclear ruthenium(II) polypyridyl complex cation of [(bpy)(2)Ru(BPBH)Ru(bpy)(2)](4+) {in which bpy=2,2'-bipyridine and BPBH=1,6-bis-(2-(2-phenyl)benzimidazoyl)hexane, RuBPBH} was successfully prepared. UV-vis absorption spectroscopy provided the evidences for the layer-by-layer deposition of EuBW anion and RuBPBH cation on quartz substrate. The (EuBW/RuBPBH)(n) films showed stable electrochemical and photoelectrochemical properties with a photocurrent density of 2.66 mu A/cm(2) being found for a 4-layer film of (EuBW/RuBPBH)(4), while irradiated with polychromatic light (325 nm < lambda < 730 nm) at an applied potential of -0.3 V versus saturated calomel electrode. The enhanced photocurrent generation by presence of the EuBW layer in this hybrid film has also been demonstrated as compared to the (PSS-c-MS/RuBPBH)(1) film by using a photoelectrochemical inactive polyanion of PSS-c-MS instead of the EuBW anion.

• 出版日期2016-3-5
• 单位北京工商大学; 北京师范大学