Meta-substituted RuII rigid rods for sensitization of TiO2

被引：11

作者：

Abrahamsson, Maria ^{[2
]}

Taratula, Olena ^{[4
]}

Persson, Petter ^{[1
]}

Galoppini, Elena ^{[4
]}

Meyer, Gerald J. ^{[2
,3
]}

机构：

[1] Lund Univ, Dept Chem Phys, SE-22100 Lund, Sweden

[2] Johns Hopkins Univ, Dept Chem, Baltimore, MD 21218 USA

[3] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

[4] Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 206卷 / 2-3期

基金：

瑞典研究理事会;

关键词：

Ru compounds; MLCT excited states; Titanium dioxide; DFT calculations; Meta-substitution; MLCT EXCITED-STATES; ELECTRON-TRANSFER; NANOCRYSTALLINE TIO2; CHARGE INJECTION; ANCHORING GROUP; COMPLEXES; LINKERS; CHROMOPHORES; ENERGY; SPACER;

D O I：

10.1016/j.jphotochem.2009.06.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ruthenium polypyridyl rigid-rod compounds with phenylene-ethynelene (OPE) spacers and an isophthalic acid (Ipa) binding group were synthesized and characterized for sensitization of nanocrystalline TiO2 (anatase) thin films. Density functional theory predicted that the most stable structure oriented the isophthalic group about 45 degrees from normal to the TiO2 surface. Comparative experimental studies of meta- and para-isomers revealed small changes in the ground state absorption spectra and very similar excited state and redox properties. The excited state injection yields (inj = 0.15 +/- 0.03)into nanocrystalline TiO2 and the subsequent charge recombination rates were found to be insensitive to the isomer utilized. Meta-substitution enabled the synthesis of sensitizers with two Ru-II sensitizers that displayed enhanced sunlight absorption relative to the monomeric compound. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：155 / 163

页数：9

共 46 条

[1]

[Anonymous], 2017, J MOL STRUCT, DOI DOI 10.1016/J.MOLSTRUC.2017.03.014

[2] 6-amino-2,2'-bipyridine as a new fluorescent organic compound [J].

Araki, K ;

Mutai, T ;

Shigemitsu, Y ;

Yamada, M ;

Nakajima, T ;

Kuroda, S ;

Shimao, I .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1996, (04) :613-617

[3] Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO2 semiconductor surfaces [J].

Ardo, Shane ;

Meyer, Gerald J. .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (01) :115-164

[4] ENHANCED SPECTRAL SENSITIVITY FROM RUTHENIUM(II) POLYPYRIDYL BASED PHOTOVOLTAIC DEVICES [J].

ARGAZZI, R ;

BIGNOZZI, CA ;

HEIMER, TA ;

CASTELLANO, FN ;

MEYER, GJ .

INORGANIC CHEMISTRY, 1994, 33 (25) :5741-5749

[5] Photoactive molecular wires based on metal complexes [J].

Barigelletti, F ;

Flamigni, L .

CHEMICAL SOCIETY REVIEWS, 2000, 29 (01) :1-12

[6] DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE [J].

BECKE, AD .

JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) :5648-5652

[7] Reductive electron transfer quenching of MLCT excited states bound to nanostructured metal oxide thin films [J].

Bergeron, BV ;

Meyer, GJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (01) :245-254

[8] PHOTOCHEMISTRY OF MLCT EXCITED-STATES - EFFECT OF NONCHROMOPHORIC LIGAND VARIATIONS ON PHOTOPHYSICAL PROPERTIES IN THE SERIES CIS-RU(BPY)2L22+ [J].

CASPAR, JV ;

MEYER, TJ .

INORGANIC CHEMISTRY, 1983, 22 (17) :2444-2453

[9] Theoretical studies of photoinduced electron transfer in dye-sensitized TiO2 [J].

Duncan, Walter R. ;

Prezhdo, Oleg V. .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 2007, 58 :143-184

[10] Linkers for anchoring sensitizers to semiconductor nanoparticles [J].

Galoppini, E .

COORDINATION CHEMISTRY REVIEWS, 2004, 248 (13-14) :1283-1297

← 1 2 3 4 5 →