Femtosecond relaxation of photoexcitations in a solution of a poly(para-phenylene)-type ladder polymer

✍ Scribed by W. Graupner; G. Leising; G. Lanzani; M. Nisoli; S. De Silvestri; U. Scherf

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 405 KB
• Volume: 246
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)01072-h

✦ Synopsis

The primary photoexcitations of a poly(para-phenylene)-type ladder polymer in toluene solution are studied by a time-resolved pump-and-probe technique. Upon exciting the sample with 120 fs pulses a strong stimulated emission is found with a decay time of 190 ps. The stimulated emission centered in the blue/green region at 490 nm shows no spectral overlap with the observed photoinduced absorption, which makes the m-LPPP a promising candidate as the active medium for laser applications.