Spin polarization and photoinduced electron transfer between ferrocene and fullerene derivatives containing a nitroxide group

被引:15
作者
Conti, F
Corvaja, C
Maggini, M
Piu, F
Scorrano, G
Toffoletti, A
机构
[1] Univ Padua, Dept Phys Chem, I-35131 Padua, Italy
[2] Univ Padua, Dept Organ Chem, CNR, Ctr Meccanismi Reaz Organ, I-35131 Padua, Italy
关键词
D O I
10.1007/BF03162211
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
Fulleropyrrolidine derivatives containing a TEMPO group (FPNOs) are examined in toluene solution, between 200 and 270 K, by TR-EPR spectroscopy after LASER excitation. Signals of the ground and excited states are observed and their time profiles are recorded. In presence of ferrocene the time pattern of the polarization is modified, showing the occurrence of intermolecular electron transfer from the donor ferrocene to the excited FPNOs. The rate constant k(ET) is obtained from the simulation of the EPR signal time evolution of the ground and excited states.
引用
收藏
页码:337 / 346
页数:10
相关论文
共 22 条
[1]   EPR studies of the excited triplet states of C60O and C60C2H4N(CH3) fullerene derivatives and C-70 in toluene and polymethylmethacrylate glasses and as films [J].
Agostini, G ;
Corvaja, C ;
Pasimeni, L .
CHEMICAL PHYSICS, 1996, 202 (2-3) :349-356
[2]  
[Anonymous], 1994, ELECT PARAMAGNETIC R
[3]   ELECTRON-TRANSFER TO TRIPLET C-60 [J].
ARBOGAST, JW ;
FOOTE, CS ;
KAO, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (06) :2277-2279
[4]   Synthesis and EPR studies of radicals and biradical anions of C-60 nitroxide derivatives [J].
Arena, F ;
Bullo, F ;
Conti, F ;
Corvaja, C ;
Maggini, M ;
Prato, M ;
Scorrano, G .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (04) :789-795
[5]   THE STRUCTURAL CHARACTERIZATION OF BUCKMINSTERFULLERENE COMPOUNDS [J].
BIRKETT, PR ;
CRANE, JD ;
HITCHCOCK, PB ;
KROTO, HW ;
MEIDINE, MF ;
TAYLOR, R ;
WALTON, DRM .
JOURNAL OF MOLECULAR STRUCTURE, 1993, 292 :1-8
[6]   A NOVEL RADICAL-TRIPLET PAIR MECHANISM FOR CHEMICALLY-INDUCED ELECTRON POLARIZATION (CIDEP) OF FREE-RADICALS IN SOLUTION [J].
BLATTLER, C ;
JENT, F ;
PAUL, H .
CHEMICAL PHYSICS LETTERS, 1990, 166 (04) :375-380
[7]   ESR OF QUARTET STATES OF RANDOMLY ORIENTED MOLECULES - CALCULATION OF LINE SHAPE AND DETECTION OF ZERO-FIELD SPLITTING [J].
BRICKMANN, J ;
KOTHE, G .
JOURNAL OF CHEMICAL PHYSICS, 1973, 59 (06) :2807-2814
[8]  
CARBONERA D, 1997, IN PRESS J AM CHEM S
[9]   EXCITED-STATE ELECTRON-TRANSFER OF FULLERENES - SINGLET-STATES VERSUS TRIPLET-STATES [J].
CASPAR, JV ;
WANG, Y .
CHEMICAL PHYSICS LETTERS, 1994, 218 (03) :221-228
[10]   STEADY-STATE AND TIME-RESOLVED DIRECT DETECTION EPR-SPECTRA OF FULLERENE TRIPLETS IN LIQUID SOLUTION AND GLASSY MATRICES - EVIDENCE FOR A DYNAMIC JAHN-TELLER EFFECT IN TRIPLET C-60 [J].
CLOSS, GL ;
GAUTAM, P ;
ZHANG, D ;
KRUSI, PJ ;
HILL, SA ;
WASSERMAN, E .
JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (13) :5228-5231