Geometry-Dependent Electronic Properties of Highly Fluorescent Conjugated Molecules

Autor:	H. R. Chandrasekhar, S. Yang, Günther Leising, C. M. Martin, Claudia Ambrosch-Draxl, Meera Chandrasekhar, Ullrich Scherf, Suchismita Guha, W. Graupner, Peter Puschnig
Rok vydání:	2000
Předmět:	Condensed Matter::Soft Condensed Matter chemistry.chemical_compound Molecular geometry chemistry Chemical physics Exciton Intermolecular force General Physics and Astronomy Poly(p-phenylene vinylene) Singlet state Polaron Electronic band structure Spectroscopy
Zdroj:	Peter Puschnig ResearcherID
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.85.2388
Popis:	We present a combined experimental/theoretical study of the electronic properties of conjugated para-phenylene type molecules under high pressure up to 80 kbar. Pressure is used as a tool to vary the molecular geometry and intermolecular interaction. The influence of the latter two on singlet and triplet excitons as well as polarons is monitored via optical spectroscopy. We have performed band structure calculations for the planar poly(para-phenylene) and calculated the dielectric function. By varying the intermolecular distances and the length of the polymer repeat unit the observed pressure effects can be explained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::983b09fc0452edd8308195ca69fc1564 https://doi.org/10.1103/physrevlett.85.2388 Zobrazit plný text záznamu