Luminescence quenching of partially quaternized poly(1-vinylimidazole)-bound ruthenium(II) complex in methanol

被引:14
作者
Suzuki, M [1 ]
Mori, Y [1 ]
Yokoyama, N [1 ]
Kimura, M [1 ]
Hanabusa, K [1 ]
Shirai, H [1 ]
机构
[1] SHINSHU UNIV, FAC TEXT SCI & TECHNOL, DEPT FUNCT POLYMER SCI, UEDA, NAGANO 386, JAPAN
关键词
D O I
10.1002/macp.1997.021980404
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Metallopolymers in which bis(2,2'-bipyridine)ruthenium(II) complexes are coordinated to imidazolyl residues on partially quaternized poly(1-vinylimidazole) having different degree of quaternization (RuQPIm) were synthesized. The luminescence quenching of the photoexcited RuQPIms with various alkylviologens having different length of alkyl group was investigated in MeOH. In quenching of RuQPIm with methylviologen group (MV2+), the efficiency of quenching decreases with increasing degree of quaternization. This was attributed to the electrostatic repulsion between the MV2+ species and the quaternized imidazolium residue on the polymer backbone and steric hindrance of the alkyl side chain. Furthermore, the efficiency of quenching depends on the length of the alkyl group in viologen. These results suggest that the alkyl side chain on the polymer backbone exerts steric hindrance at low degree of quaternization and van der Waals interaction at high degree of quaternization.
引用
收藏
页码:959 / 967
页数:9
相关论文
共 23 条
[1]   ELECTROCHEMICAL CONTROL OF THE LUMINESCENT LIFETIME OF RU(BPY)32+STAR INCORPORATED IN NAFION FILMS ON GRAPHITE-ELECTRODES [J].
BUTTRY, DA ;
ANSON, FC .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1982, 104 (18) :4824-4829
[2]   INTRAMOLECULAR ELECTRON-TRANSFER IN THE INVERTED REGION [J].
CHEN, PY ;
DUESING, R ;
GRAFF, DK ;
MEYER, TJ .
JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (15) :5850-5858
[3]   LONG-RANGE, LIGHT-INDUCED REDOX SEPARATION ACROSS A LIGAND BRIDGE [J].
DUESING, R ;
TAPOLSKY, G ;
MEYER, TJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (13) :5378-5379
[4]   PHOTOREDOX REACTIONS OF A POSITIVELY CHARGED WATER-SOLUBLE POLYMER CONTAINING COVALENTLY BOUND TRIS(2,2'-BIPYRIDYL)RUTHENIUM(II)-LIKE CENTERS - N- ETHYLATED COPOLYMERS OF 4-VINYLPYRIDINE AND BIS(2,2'-BIPYRIDYL)(4-METHYL-4'-VINYL-2,2'-BIPYRIDYL)RUTHENIUM(II) [J].
ENNIS, PM ;
KELLY, JM .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (15) :5735-5740
[5]  
FORD WE, 1978, NATURE, V274, P506
[6]   SYNTHESIS, CHARACTERIZATION, AND PHOTOCHEMICAL PROPERTIES OF A SERIES OF RUTHENIUM CONTAINING METALLOPOLYMERS BASED ON POLY-N-VINYLIMIDAZOLE [J].
GERATY, SM ;
VOS, JG .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1987, (12) :3073-3078
[7]   ELECTROCHEMICAL AND PHOTOCHEMICAL BEHAVIOR OF POLY(4-VINYLPYRIDINE) BOUND RUTHENIUM COMPLEXES ATTACHED TO ELECTRODE SURFACES .4. [J].
HAAS, O ;
ZUMBRUNNEN, HR ;
VOS, JG .
ELECTROCHIMICA ACTA, 1985, 30 (11) :1551-1554
[8]   PREPARATION, CHARACTERIZATION AND ELECTROCHEMISTRY OF ELECTRODES COATED WITH POLY(4-VINYLPYRIDINE) BOUND RUTHENIUM COMPLEXES [J].
HAAS, O ;
VOS, JG .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1980, 113 (01) :139-149
[9]   PHOTOCHEMICAL ELECTRON-TRANSFER IN CHROMOPHORE QUENCHER COMPLEXES OF RU(II) BASED ON TRIS(1-PYRAZOLYL)METHANE [J].
JONES, WE ;
BIGNOZZI, CA ;
CHEN, PY ;
MEYER, TJ .
INORGANIC CHEMISTRY, 1993, 32 (07) :1167-1178