Time-Resolved Photoluminescence Study and Microcapillary Laser of Blue-Emissive π-Conjugated Polymers Based on 9,10-Dihydrophenanthrene Unit

The emission properties of pi-conjugated polymers based on 9,,10-dihydrophenanthrene units, which are expected to form linear and planar pi-conjugations and have rigid characteristics in the main chain, have been clarified in the films. The photoluminescence decay of the pi-conjugated polymers with the 9,10-dihydrophenanthrene unit has been studied in detail, and low-threshold photopumped multimode blue laser emission has been demonstrated from cylindrical microcavities with the polymer thin film fabricated onto the inner surface of an optical capillary tube. (C) 2009 The Japan Society of Applied Physics