FRET in Orthogonal, Increasingly Strain-Rigidified Systems

Langhals, Heinz ; Dietl, Christian und Mayer, Peter (2021): FRET in Orthogonal, Increasingly Strain-Rigidified Systems. In: Israel Journal of Chemistry

Abstract

The influence of the geometry factor κ on the efficiency of energy transfer by FRET (Förster resonance energy transfer) was studied by means of dyads of benzoperylene and perylene interlinked by a spacer of the cage bicyclo-[2.2.2]octane. The electronic transition moments were arranged orthogonally for extinguishing the energy transfer according to Förster's theory. In contrast to the theory energy transfer proceeded unrestrictedly attributed to molecular vibrations. A further rigidifying of the spacer by means of annellation with benzo groups until the very rigid triptycene as a spacer could not hinder the energy transfer so that general strongly coupled molecular framework vibrations seem to be dominant in the energy transfer whereas molecular flexibility seems to be of minor importance. Application such as molecular mirrors are discussed.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie ; Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 2644-1373
• Bemerkung: Dedication to Prof. Niyazi Serdar Sariciftci on the occasion of his 60th birthday
• Sprache: Englisch