Multicolour Self-Assembled Fluorene Co-Oligomers: From Molecules to the Solid State via White-Light-Emitting Organogels

[en] Five fluorene-based co-oligomers have been prepared to study their self-assembly in a wide range of concentrations, from dilute solutions to the solid state. Subtle changes to the chemical structures, introduced to tune the emission colours over the entire visible range, induce strong differences in aggregation behaviour. Only two of the fluorescent co-oligomer derivatives self-assemble to form soluble fibrils from which fluorescent organogels emerge at higher concentrations. In contrast, the other compounds form precipitates. Mixed fluorescent co-oligomer systems exhibit partial energy transfer, which allows the creation of white-light-emitting gels. Finally, a mechanism for the hierarchical self-assembly of this class of materials is proposed based on experimental results and molecular modelling calculations.

Disciplines :

Chemistry
Physics

Author, co-author :

Abbel, R.

van der Weegen, R.

Pisula, W.

Surin, Mathieu ; Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux

Leclère, Philippe ; Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux

Lazzaroni, Roberto ; Université de Mons > Faculté des Sciences > Service de Chimie des matériaux nouveaux

Meijer, E.W.

Schenning, A.P.H.J.

Language :

English

Title :

Multicolour Self-Assembled Fluorene Co-Oligomers: From Molecules to the Solid State via White-Light-Emitting Organogels

Publication date :

28 September 2009

Journal title :

Chemistry

ISSN :

0947-6539

Publisher :

John Wiley & Sons, United Kingdom

Volume :

Issue :

Pages :

9737-9746

Peer reviewed :

Peer Reviewed verified by ORBi

Research unit :

S817 - Chimie des matériaux nouveaux

Research institute :

R400 - Institut de Recherche en Science et Ingénierie des Matériaux

Commentary :

Publié en ligne le 28 août 2009

Available on ORBi UMONS :

since 10 June 2010

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