Synthesis and characterization of a trinuclear iridium(III) based catalyst for the photocatalytic reduction of CO2

被引：37

作者：

Reithmeier, R. O. ^{[1
]}

Meister, S. ^{[1
]}

Siebel, A. ^{[2
]}

Rieger, B. ^{[1
]}

机构：

[1] Tech Univ Munich, WACKER, Chair Macromol Chem, D-85748 Garching, Germany

[2] Tech Univ Munich, Dept Tech Electrochem, D-85748 Garching, Germany

来源：

DALTON TRANSACTIONS | 2015年 / 44卷 / 14期

关键词：

VISIBLE-LIGHT IRRADIATION; CARBON-DIOXIDE; PHOTOCHEMICAL REDUCTION; RHENIUM(I) COMPLEXES; METAL-COMPLEXES; PHOTOREDUCTION; CONVERSION; EFFICIENT; COBALT; LUMINESCENCE;

D O I：

10.1039/c5dt00370a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A trimetallic Ir(III) based complex (3) was synthesized and fully characterized by spectroscopic and electrochemical methods. A detailed comparison to its mono-(1) and bimetallic (2) analogue regarding the photocatalytic reduction of CO2 is outlined. In particular, the effect of intramolecular quenching, provided by ethyl tethers, was investigated. Moreover, the relationship between the photophysical properties, the lifetime of the excited state, the quenching efficiency and the catalytic performance is presented. Notably, the covalent linkage of the Ir(III) moieties within the three-armed ligand structure (complex 3) leads to a twofold increase of the turn over number (TON) compared to its monometallic analogue 1. Taking in account the quantum efficiency of 10% and the TONCO = 60 (per Ir(III) center), complex 3 is a highly active Ir(III) based photocatalyst.

引用

页码：6466 / 6472

页数：7

共 39 条

[1] THE PHOTOREDUCTION OF SOME FERRIC COMPOUNDS IN AQUEOUS SOLUTION
BAXENDALE, JH
BRIDGE, NK
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1955, 59 (08) : 783 - 788
[2] Benson E. E., 2013, ANGEW CHEM, V125, P4941
[3] Structural investigations into the deactivation pathway of the CO2 reduction electrocatalyst Re(bpy)(CO)3Cl
Benson, Eric E.
Kubiak, Clifford P.
[J]. CHEMICAL COMMUNICATIONS, 2012, 48 (59) : 7374 - 7376
[4] Conjugation effect of the bridging ligand on the CO2 reduction properties in difunctional photocatalysts
Bian, Zhao-Yong
Chi, Shao-Ming
Li, Li
Fu, Wenfu
[J]. DALTON TRANSACTIONS, 2010, 39 (34) : 7884 - 7887
[5] Electrocatalytic and Photocatalytic Conversion of CO2 to Methanol using Ruthenium Complexes with Internal Pyridyl Cocatalysts
Boston, David J.
Pachon, Yeimi M. Franco
Lezna, Reynaldo O.
de Tacconi, N. R.
MacDonnell, Frederick M.
[J]. INORGANIC CHEMISTRY, 2014, 53 (13) : 6544 - 6553
[6] Binuclear rhenium(I) complexes for the photocatalytic reduction of CO2
Bruckmeier, Christian
Lehenmeier, Maximilian W.
Reithmeier, Richard
Rieger, Bernhard
Herranz, Juan
Kavakli, Cueneyt
[J]. DALTON TRANSACTIONS, 2012, 41 (16) : 5026 - 5037
[7] MECHANISM OF THE FORMATION OF DIHYDROGEN FROM THE PHOTOINDUCED REACTIONS OF POLY(PYRIDINE)RUTHENIUM(II) AND POLY(PYRIDINE)RHODIUM(III) COMPLEXES
CHAN, SF
CHOU, M
CREUTZ, C
MATSUBARA, T
SUTIN, N
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (02) : 369 - 379
[8] PHOTOCHEMICAL REDUCTION OF CARBON-DIOXIDE USING NICKEL TETRAAZAMACROCYCLES
CRAIG, CA
SPREER, LO
OTVOS, JW
CALVIN, M
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (20) : 7957 - 7960
[9] Rapid transfer of hydride ion from a ruthenium complex to C1 species in water
Creutz, Carol
Chou, Mei H.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (33) : 10108 - +
[10] PHOTOINDUCED ELECTRON-TRANSFER REACTIONS OF TRANSITION-METAL COMPLEXES WITH AMINES - MECHANISTIC STUDIES OF ALTERNATE PATHWAYS TO BACK ELECTRON-TRANSFER
DELAIVE, PJ
FOREMAN, TK
GIANNOTTI, C
WHITTEN, DG
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (17) : 5627 - 5631

← 1 2 3 4 →