Sensitization of TiO2 by phosphonate-derivatized proline assemblies

被引：73

作者：

Trammell, SA ^{[1
]}

Moss, JA ^{[1
]}

Yang, JC ^{[1
]}

Nakhle, BM ^{[1
]}

Slate, CA ^{[1
]}

Odobel, F ^{[1
]}

Sykora, M ^{[1
]}

Erickson, BW ^{[1
]}

Meyer, TJ ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

来源：

INORGANIC CHEMISTRY | 1999年 / 38卷 / 16期

关键词：

D O I：

10.1021/ic990052t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Surface electrochemical and photoelectrochemical measurements on ITO (In2O3:Sn) or TiO2 of two proline assemblies are reported. Surface coverage on ITO of Pbp-pra(Ru(II)b(2)m)-OH(PF6)(2) and Bpb-pra(Ru(II)b(2)m)-OCH3(CF3CO2)(2) are (1.5-2.4) x 10(-10) mol/cm(2), comparable to monolayer coverages of (1.5-2.5) x 10(-10) mol/cm2 for [Ru(bpy)(2)(4,4'-(CO2H)(2)bpy)](PF6)(2) and [Ru(bpy)(2)(4,4'-(PO3H2)(2)bpy)](Br)(2). Incident photon-to-current conversion efficiency (IPCE) measured in Graztel-type photovoltaic cells are sensitive to subtle structural differences in the assemblies. IPCE values for Pbp-pra(Ru(II)b(2)m)-OH(PF6)(2) and Bpb-pra(Ru(II)b(2)m)-OCH3(CF3CO2)(2) are 2% and <0.1%, which are compared to 23% for both [Ru(bpy)(2)(4,4'-(PO3H2)(2)bpy)](Br)(2) and [Ru(bpy)(2)(4,4'-(CO2H)(2)bpy)](PF6)(2) under the same conditions.

引用

页码：3665 / 3669

页数：5

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