Laser action from a sugar-threaded polyrotaxane

Mroz MM

First

;Perissinotto S;Virgili T;Gigli G;Salerno M;Frampton MJ;Sforazzini G

Member of the Collaboration Group

;Anderson HL;Lanzani G

2009-01-01

---

Abstract

We present gain and lasing results from a polyrotaxane consisting of a conjugated polymer (polyfluorene-alt-biphenylene) threaded through sugar macrocycles (beta-cyclodextrin). Encapsulation suppresses interchain charge separation, leading to lasing emission not observed in the unthreaded polymer, and enlargement of the stimulated emission in threaded polymer is observed. We demonstrate all-optical switching distributed feedback laser.