Université de Neuchâtel

Highly Fluorescent Liquid-Crystalline Dendrimers Based on Borondipyrromethene Dyes

Frein, Stéphane ; Camerel, Franck ; Ziessel, Raymond ; Barberá, Joaquín ; Deschenaux, Robert

In: Chemistry of Materials, 2009, vol. 21, no. 17, p. 3950–3959

Fluorescent mesomorphic materials have been synthesized by grafting difluoro-bora-diaza-s-indacene (F-Bodipy) onto first-, second-, and third-generation liquid-crystalline poly(aryl ester) dendrons functionalized with cyanobiphenyl units. The second- and third-generation dendrimers give rise to smectic A phases; the first-generation dendrimer shows a nematic phase and an...

Université de Neuchâtel

Red and Blue Liquid-Crystalline Borondipyrromethene Dendrimers

Mula, Soumyaditya ; Frein, Stéphane ; Russo, Virginie ; Ulrich, Gilles ; Ziessel, Raymond ; Barberá, Joaquín ; Deschenaux, Robert

In: Chemistry of Materials, 2015, vol. 27, no. 7, p. 2332-2342

We have designed a series of modular and fluorescent poly(arylester) dendrimers functionalized with cyanobiphenyl subunits and fluorescent borondipyrromethene (Bodipy) dyes. The green emitter is a Bodipy with four methyl groups, and the Bodipy dye possessing extended conjugation with two methyl and two vinyl groups acts as a red emitter. The design element of these architectures relates to a...