Tuning the optical properties of aryl-substituted dispirofluorene-indenofluorene isomers through intramolecular excimer formation.
Two families of positional isomers of dispirofluorene-indenofluorene substituted by phenyl groups at the 2,7-positions of the fluorene moieties present drastically different optical properties. The emission wavelengths may be gradually and conveniently modulated for one of the two isomers by the phenyl group's substituent whose bulkiness controls the extent of the excimeric interaction evidenced in this paper.
Thirion
Damien
D
Université de Rennes 1, UMR CNRS 6226 Sciences Chimiques de Rennes, MaCSE group, Bat 10C, Campus de Beaulieu, 35042 Rennes cedex France.
Poriel
Cyril
C
Barrière
Frédéric
F
Métivier
Rémi
R
Jeannin
Olivier
O
Rault-Berthelot
Joëlle
J