CHARGE TRAPPING BY ANIONIC QUINONES ELECTROSTATICALLY BOUND TO A HIGHLY-CHARGED CATIONIC QUINONE VIOLOGEN POLYMER OR A CATIONIC POLY(3-VIOLOGEN-THIOPHENE)

被引:17
作者
HABLE, CT [1 ]
CROOKS, RM [1 ]
VALENTINE, JR [1 ]
GIASSON, R [1 ]
WRIGHTON, MS [1 ]
机构
[1] MIT, DEPT CHEM, CAMBRIDGE, MA 02139 USA
关键词
D O I
10.1021/j100124a045
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
Charge associated with quinone reduction is trapped at low pH in systems composed of sulfonated anthraquinones electrostatically bound to a polymer derived from a monomer consisting of a quinone unit flanked by two viologen units. Each monomer repeat unit carries 6 equiv of positive charge which can be charge compensated by monosulfonated anthraquinone to yield a quinone:viologen ratio of nearly 7:2. At low pH, electrostatic binding is persistent, and the amount of trapped charge is 90% of the theoretical maximum. Some of the electrostatically bound quinone can be replaced with Fe(CN)63- to allow mediated release of trapped charge via the Fe(CN)63-/4- redox couple. I- is blocked from entering the polymer and thus does not mediate release of charge. Electrostatic binding of anionic quinones to a thiophene polymer with pendant viologen units has also been demonstrated. This polymer system has the unique property of having built-in mediators for both the reduction (charge trapping) and oxidation (charge release) of the electrostatically bound anthraquinone.
引用
收藏
页码:6060 / 6065
页数:6
相关论文
共 21 条
[1]   RECTIFYING INTERFACES USING 2-LAYER FILMS OF ELECTROCHEMICALLY POLYMERIZED VINYLPYRIDINE AND VINYLBIPYRIDINE COMPLEXES OF RUTHENIUM AND IRON ON ELECTRODES [J].
ABRUNA, HD ;
DENISEVICH, P ;
UMANA, M ;
MEYER, TJ ;
MURRAY, RW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (01) :1-5
[2]   ELECTROSTATIC BINDING OF ELECTROACTIVE AND NON-ELECTROACTIVE ANIONS IN A SURFACE-CONFINED, ELECTROACTIVE POLYMER - SELECTIVITY OF BINDING MEASURED BY AUGER-SPECTROSCOPY AND CYCLIC VOLTAMMETRY [J].
BRUCE, JA ;
WRIGHTON, MS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1982, 104 (01) :74-82
[3]   UNIDIRECTIONAL CURRENT FLOW AND CHARGE STATE TRAPPING AT REDOX POLYMER INTERFACES ON BILAYER ELECTRODES - PRINCIPLES, EXPERIMENTAL DEMONSTRATION, AND THEORY [J].
DENISEVICH, P ;
WILLMAN, KW ;
MURRAY, RW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (16) :4727-4737
[4]   SYNTHESIS AND CHARACTERIZATION OF A BENZYLVIOLOGEN SURFACE-DERIVATIZING REAGENT - N,N'-BIS[P-(TRIMETHOXYSILYL)BENZYL]-4,4'-BIPYRIDINIUM DICHLORIDE [J].
DOMINEY, RN ;
LEWIS, TJ ;
WRIGHTON, MS .
JOURNAL OF PHYSICAL CHEMISTRY, 1983, 87 (26) :5345-5354
[5]   PH-DEPENDENT CHARGE TRAPPING BY QUINONES ELECTROSTATICALLY BOUND IN AN ELECTRODE-CONFINED BENZYLVIOLOGEN POLYMER [J].
HABLE, CT ;
CROOKS, RM ;
WRIGHTON, MS .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (04) :1190-1192
[6]  
KSENZHEK OS, 1977, ELEKTROKHIMIYA, V13, P182
[7]   ELECTROCATALYSIS WITH FERROCYANIDE ELECTROSTATICALLY TRAPPED IN AN ALKYLAMINESILOXANE POLYMER FILM ON A PT ELECTRODE [J].
KUO, KN ;
MURRAY, RW .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 131 (JAN) :37-60
[9]   COMPARISON OF THE CHARGE-TRANSPORT RATE IN 2 REDOX LEVELS OF POLYMERS DERIVED FROM N,N'-DIBENZYL-4,4'-BIPYRIDINIUM AND N,N'-DIALKYL-4,4'-BIPYRIDINIUM [J].
LEWIS, TJ ;
WHITE, HS ;
WRIGHTON, MS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (23) :6947-6952
[10]   CHARGE-TRANSPORT RATES IN POLY-ELECTROLYTE FILMS ON ELECTRODES - DISPARATE DIFFUSION-COEFFICIENTS FOR ALIZARIN RED-S WITH 2 SEPARATE ELECTROACTIVE CENTERS [J].
OHSAKA, T ;
OYAMA, N ;
TAKAHIRA, Y ;
NAKAMURA, S .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 247 (1-2) :339-343