click chemistry;
tin oxide;
surface;
electron transfer;
metal oxide;
surface functionalization;
SENSITIZED SOLAR-CELLS;
ELECTRON-TRANSFER;
COVALENT ATTACHMENT;
TIO2;
SNO2;
TRANSPORT;
EFFICIENCY;
RUTHENIUM(II);
SPECTROSCOPY;
DYNAMICS;
D O I:
10.1021/am200615r
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
We demonstrate the use of "click" chemistry to form electrochemically and photoelectrochemically active molecular interfaces to SnO2 nanoparticle thin films. By using photochemical grafting to link a short-chain alcohol to the surface followed by conversion to a surface azide group, we enable use of the Cu(I)-catalyzed azide-alkyne [3 + 2] cycloaddition (CuAAC) reaction, a form of "click" chemistry, on metal oxide surfaces. Results are shown with three model compounds to test the surface chemistry and subsequent ability to achieve electrochemical and photoelectrochemical charge transfer. Surface-tethered ferrocene groups exhibit good electron-transfer characteristics with thermal rates estimated at >1000 s(-1). Time-resolved surface photovoltage measurements using a ruthenium terpyridyl coordination compound demonstrate photoelectron charge transfer on time scales of nanoseconds or less, limited by the laser pulse width. The results demonstrate that the CuAAC "click" reaction can be used to form electrochemically and photoelectrochemically active molecular interfaces to SnO2 and other metal oxide semiconductors.
机构:
Univ Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, FranceUniv Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, France
Anne, A
;
Demaille, C
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, FranceUniv Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, France
机构:
Univ Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, FranceUniv Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, France
Anne, Agnes
;
Demaille, Christophe
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, FranceUniv Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, France
[Anonymous], 1995, Handbook of X-ray Photoelectron Spectroscopy. A Reference Book of Standard Spectra for Identification and Interpretation of XPS Data
机构:
Univ Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, FranceUniv Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, France
Anne, A
;
Demaille, C
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, FranceUniv Paris 07, CNRS, UMR 7591, Electrochim Mol Lab, F-75251 Paris 05, France
机构:
Univ Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, FranceUniv Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, France
Anne, Agnes
;
Demaille, Christophe
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, FranceUniv Paris 07, Electrochim Mol Lab, UMR Univ 7591, CNRS, F-75251 Paris 5, France
[Anonymous], 1995, Handbook of X-ray Photoelectron Spectroscopy. A Reference Book of Standard Spectra for Identification and Interpretation of XPS Data