Exciton Delocalization in Antenna Complexes of Purple and Green Bacteria as Revealed by Femtosecond Pump-Probe Spectroscopy

Autor:	Vladimir I. Novoderezhkin, A. N. Belozersky, Zoya G. Fetisova
Rok vydání:	1998
Předmět:	Photosynthetic reaction centre Physics::Biological Physics Dipole Delocalized electron Chemistry Exciton Femtosecond Photosynthetic bacteria Antenna (radio) Photochemistry Molecular physics Excitation Computer Science::Information Theory
Zdroj:	Photosynthesis: Mechanisms and Effects ISBN: 9780792355472
DOI:	10.1007/978-94-011-3953-3_6
Popis:	The initial steps of photosynthesis comprise the absorption of light and excitation energy transfer in a light-harvesting antenna with a subsequent excitation trapping by a reaction center where a charge separation is started (1). In purple photosynthetic bacteria the light-harvesting antenna consists of a peripheral antenna (LH2) and a core antenna (LH1) that directly surround the reaction centers. Transient absoprption studies have shown an anomalously high dipole strength of the bleached transitions reflecting highly delocalized exciton states within the LH2 and LH1 antennae (2-6).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8100661215be76d0648e71f2176af39d https://doi.org/10.1007/978-94-011-3953-3_6 Zobrazit plný text záznamu