Laser flash photolysis study of anthracene/viologen charge transfer complex in non-polar, dealuminated zeolites

被引:15
作者
Alvaro, M
Corma, A
Ferrer, B
García, H
Palomares, E
机构
[1] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Valencia 46022, Spain
[2] Univ Politecn Valencia, Dept Quim, Valencia 46022, Spain
关键词
D O I
10.1039/b313477f
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
A charge-transfer anthracene/viologen complex has been assembled within two purposely-prepared, non-polar Beta zeolite samples devoid of framework negative charge and positive cations. IR spectroscopy (absence of silanol groups), vapor adsorption (preferent n-hexane adsorption over water) and powder X ray diffraction (high crystallinity with minimum structural defects) indicate the "hydrophobic", low-polarity characteristics of the Beta zeolite samples used. Laser flash photolysis upon 532 nm selective excitation of the charge-transfer band shows that the photogenerated radical ions live hundreds of mus. This is the same time scale as for conventional, polar faujasites with high Al content. We suggest that in our non-polar zeolite the compartmentalized space and the ability of zeolites to participate in electron transfer processes are the main factors contributing to the remarkable lifetime increase of radical ions.
引用
收藏
页码:1345 / 1349
页数:5
相关论文
共 31 条
  • [1] Intrazeolite photochemistry .17. Zeolites as electron donors: Photolysis of methylviologen incorporated within zeolites
    Alvaro, M
    Garcia, H
    Garcia, S
    Marquez, F
    Scaiano, JC
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (16): : 3043 - 3051
  • [2] Screening of an ionic liquid as medium for photochemical reactions
    Alvaro, M
    Ferrer, B
    García, H
    Narayana, M
    [J]. CHEMICAL PHYSICS LETTERS, 2002, 362 (5-6) : 435 - 440
  • [3] Direct synthesis and characterization of hydrophobic aluminum-free Ti-beta zeolite
    Blasco, T
    Camblor, MA
    Corma, A
    Esteve, P
    Guil, JM
    Martínez, A
    Perdigón-Melón, JA
    Valencia, S
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (01) : 75 - 88
  • [4] STORAGE OF LIGHT ENERGY BY PHOTOELECTRON TRANSFER ACROSS A SENSITIZED ZEOLITE SOLUTION INTERFACE
    BORJA, M
    DUTTA, PK
    [J]. NATURE, 1993, 362 (6415) : 43 - 45
  • [5] BRACALEON L, 1998, J AM CHEM SOC, V120, P4926
  • [6] Spontaneous nucleation and growth of pure silica zeolite-beta free of connectivity defects
    Camblor, MA
    Corma, A
    Valencia, S
    [J]. CHEMICAL COMMUNICATIONS, 1996, (20) : 2365 - 2366
  • [7] INFLUENCE OF THE SYNTHESIS CONDITIONS ON THE CRYSTALLIZATION OF ZEOLITE BETA
    CAMBLOR, MA
    MIFSUD, A
    PEREZPARIENTE, J
    [J]. ZEOLITES, 1991, 11 (08): : 792 - 797
  • [8] INORGANIC SOLID ACIDS AND THEIR USE IN ACID-CATALYZED HYDROCARBON REACTIONS
    CORMA, A
    [J]. CHEMICAL REVIEWS, 1995, 95 (03) : 559 - 614
  • [9] Corma V, 2000, ANGEW CHEM INT EDIT, V39, P2346
  • [10] Dutta P K, 1977, PROG INORG CHEM, V44, P209