Dynamic process in a hexameric benzo-porphyrin studied by femtosecond transient absorption

被引：15

作者：

Schweitzer, G

De Belder, G

Latterini, L

Karni, Y

Rowan, AE

Nolte, RJM

De Schryver, FC

机构：

[1] Katholieke Univ Leuven, B-3001 Heverlee, Belgium

[2] Univ Nijmegen, NSR Ctr, Dept Organ Chem, NL-6525 ED Nijmegen, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 303卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)00246-8

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 fast kinetics of a hexameric benzo-porphyrin compound was investigated by femtosecond transient absorption spectroscopy. Using polychromatic detection, a sequence of spectra acquired at different delays revealed complex kinetic processes on the timescale of approximately 20 ps. The samples were then investigated at selected wavelengths by using a dual-colour femtosecond pump-probe setup. The same sequence of measurements was carried out under identical conditions on a benzo-porphyrin model sample. The comparison of the transient absorption decays recorded for both compounds revealed that only in the hexamer a 20 ps decay component is present which is attributed to an intramolecular interchromophoric excited-state process. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：261 / 267

页数：7

共 16 条

[1] Hexakis porphyrinato benzenes. A new class of porphyrin arrays
Biemans, HAM
Rowan, AE
Verhoeven, A
Vanoppen, P
Latterini, L
Foekema, J
Schenning, APHJ
Meijer, EW
de Schryver, FC
Nolte, RJM
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (43) : 11054 - 11060
[2] CHARGE-TRANSFER ACROSS OBLIQUE BISPORPHYRINS - 2-CENTER PHOTOACTIVE MOLECULES
BRUN, AM
HARRIMAN, A
HEITZ, V
SAUVAGE, JP
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (23) : 8657 - 8663
[3] STRUCTURE OF THE PROTEIN SUBUNITS IN THE PHOTOSYNTHETIC REACTION CENTER OF RHODOPSEUDOMONAS-VIRIDIS AT 3A RESOLUTION
DEISENHOFER, J
EPP, O
MIKI, K
HUBER, R
MICHEL, H
[J]. NATURE, 1985, 318 (6047) : 618 - 624
[4] STRUCTURE AND FUNCTION OF BACTERIAL PHOTOSYNTHETIC REACTION CENTERS
FEHER, G
ALLEN, JP
OKAMURA, MY
REES, DC
[J]. NATURE, 1989, 339 (6220) : 111 - 116
[5] Gouterman M., 1978, PORPHYRINS, VIII
[6] Light-harvesting mechanisms in purple photosynthetic bacteria
Isaacs, NW
Cogdell, RJ
Freer, AA
Prince, SM
[J]. CURRENT OPINION IN STRUCTURAL BIOLOGY, 1995, 5 (06) : 794 - 797
[7] Femtosecond polarized transient absorption spectroscopy of a C3-symmetric amino-substituted phenylbenzene derivative
Latterini, L
De Belder, G
Schweitzer, G
Van der Auweraer, M
De Schryver, FC
[J]. CHEMICAL PHYSICS LETTERS, 1998, 295 (1-2) : 11 - 16
[8] CRYSTAL-STRUCTURE OF AN INTEGRAL MEMBRANE LIGHT-HARVESTING COMPLEX FROM PHOTOSYNTHETIC BACTERIA
MCDERMOTT, G
PRINCE, SM
FREER, AA
HAWTHORNTHWAITELAWLESS, AM
PAPIZ, MZ
COGDELL, RJ
ISAACS, NW
[J]. NATURE, 1995, 374 (6522) : 517 - 521
[9] Femtosecond transient photoinduced transmission measurements on a novel conjugated zinc porphyrin system
OKeefe, GE
Denton, GJ
Harvey, EJ
Phillips, RT
Friend, RH
Anderson, HL
[J]. JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (03) : 805 - 811
[10] OPTICAL-PROPERTIES OF METALLOPORPHYRIN EXCITED-STATES
RODRIGUEZ, J
KIRMAIER, C
HOLTEN, D
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (17) : 6500 - 6506

← 1 2 →