title: Carbon-bridged oligo(p-phenylenevinylene)s for photostable and broadly tunable, solution-processable thin film organic lasers.
abstract: Thin film organic lasers represent a new generation of inexpensive, mechanically flexible devices for spectroscopy, optical communications and sensing. For this purpose, it is desired to develop highly efficient, stable, wavelength-tunable and solution-processable organic laser materials. Here we report that carbon-bridged oligo(p-phenylenevinylene)s serve as optimal materials combining all these properties simultaneously at the level required for applications by demonstrating amplified spontaneous emission and distributed feedback laser devices. A series of six compounds, with the repeating unit from 1 to 6, doped into polystyrene films undergo amplified spontaneous emission from 385 to 585 nm with remarkably low threshold and high net gain coefficients, as well as high photostability. The fabricated lasers show narrow linewidth (<0.13 nm) single mode emission at very low thresholds (0.7 kW cm(-2)), long operational lifetimes (>10(5) pump pulses for oligomers with three to six repeating units) and wavelength tunability across the visible spectrum (408-591 nm).
authors.affiliation: Departamento Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Morales-Vidal
authors.affiliation: Departamento Óptica, Farmacología y Anatomía; and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain.
authors.forename: Pedro G
authors.initials: PG
authors.lastname: Boj
authors.affiliation: Departamento Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: Villalvilla
authors.affiliation: Departamento Óptica, Farmacología y Anatomía; and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain.
authors.forename: José A
authors.initials: JA
authors.lastname: Quintana
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Qifan
authors.initials: Q
authors.lastname: Yan
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Nai-Ti
authors.initials: NT
authors.lastname: Lin
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Xiaozhang
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Nopporn
authors.initials: N
authors.lastname: Ruangsupapichat
authors.affiliation: Department of Physical Chemistry, University of Málaga, Andalucía Tech., Campus de Teatinos s/n, Málaga 29071, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Casado
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.|JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Hayato
authors.initials: H
authors.lastname: Tsuji
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Eiichi
authors.initials: E
authors.lastname: Nakamura
authors.affiliation: Departamento Física Aplicada and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante 03080, Spain.
authors.forename: María A
authors.initials: MA
authors.lastname: Díaz-García