Enhancing effect of an amino acid residue model for the electrochemical water oxidation catalyst confined in a polymer membrane

被引：27

作者：

Yagi, M ^{[1
]}

Kinoshita, K ^{[1
]}

Kaneko, M ^{[1
]}

机构：

[1] IBARAKI UNIV,FAC SCI,MITO,IBARAKI 310,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 20期

关键词：

D O I：

10.1021/jp9638292

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：

The activity of an electrocatalytic oxygen evolving center (OEC) molecule based on the trinuclear Ru complex, Ru-red ([(NH3)(5)Ru-O-Ru(NH3)(4)-O-Ru(NH3)(5)](6+)) codispersed with an amino acid residue model compound in a Nafion membrane was studied. The activity of the OEC molecule increased remarkably in the presence of p-cresol (p-Cre), a Tyr model compound. The activity was analyzed based on the intermolecular distance distribution in terms of charge transfer distances between the OEC molecules mediated by p-Cre, their critical decomposition distance, and the intrinsic activity. The charge transfer distance increased remarkably from 1.28 to 2.25 nm by the presence of p-Cre, suggesting that p-Cre works as a mediator for the charge transfer.

引用

收藏

页码：3957 / 3960

页数：4

相关论文

共 12 条

[1] THE ROLE OF REDOX-ACTIVE AMINO-ACIDS IN THE PHOTOSYNTHETIC WATER-OXIDIZING COMPLEX [J].

BARRY, BA .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1993, 57 (01) :179-188

[2] LONG-RANGE INTRAMOLECULAR ELECTRON-TRANSFER IN AZURINS [J].

FARVER, O ;

PECHT, I .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (14) :5764-5767

[3] AN AROMATIC AMINO-ACID IS REQUIRED AT POSITION-65 IN ANABAENA FERREDOXIN FOR RAPID ELECTRON-TRANSFER TO FERREDOXIN NADP+ REDUCTASE [J].

HURLEY, JK ;

CHENG, H ;

XIA, B ;

MARKLEY, JL ;

MEDINA, M ;

GOMEZMORENO, C ;

TOLLIN, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (25) :11698-11701

[4]

KANEKO M, 1991, MACROMOLECULAR COMPL, P353

[5] LONG-DISTANCE ELECTRON-TRANSFER IN PROTEINS AND MODEL SYSTEMS [J].

MCLENDON, G .

ACCOUNTS OF CHEMICAL RESEARCH, 1988, 21 (04) :160-167

[6] EFFECT OF AMINO-ACID RESIDUE MODEL ON THE PHOTOINDUCED LONG-DISTANCE ELECTRON-TRANSFER FROM THE EXCITED RU(BPY)(3)(2+) TO METHYLVIOLOGEN IN A POLYMER FILM [J].

NAGAI, K ;

TSUKAMOTO, J ;

TAKAMIYA, N ;

KANEKO, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (17) :6648-6651

[7]

Ort D., 1996, OXYGENIC PHOTOSYNTHE

[8] SPIN-DENSITY DISTRIBUTION, CONFORMATION, AND HYDROGEN-BONDING OF THE REDOX-ACTIVE TYROSINE Y-Z IN PHOTOSYSTEM-II FROM MULTIPLE ELECTRON MAGNETIC-RESONANCE SPECTROSCOPIES - IMPLICATIONS FOR PHOTOSYNTHETIC OXYGEN EVOLUTION [J].

TOMMOS, C ;

TANG, XS ;

WARNCKE, K ;

HOGANSON, CW ;

STYRING, S ;

MCCRACKEN, J ;

DINER, BA ;

BABCOCK, GT .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (41) :10325-10335

[9] Activity analysis of electrochemical water oxidation catalyst confined in a coated-polymer membrane [J].

Yagi, M ;

Kinoshita, K ;

Kaneko, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (26) :11098-11100

[10] CHARGE-TRANSFER AND MOLECULAR-DISTRIBUTION OF RU(BPY)(3)(2+) COMPLEX DISPERSED IN A NAFION(R) MEMBRANE AS STUDIED BY IN-SITU SPECTROCYCLIC VOLTAMMETRY [J].

YAGI, M ;

NAGAI, K ;

ONIKUBO, T ;

KANEKO, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 383 (1-2) :61-66