Spiro-substitution effect of terfluorenes on amplified spontaneous emission and lasing behaviors. Issue 16 (12th April 2018)

• Record Type: Journal Article
• Authors: Zuo, Zongyan; Ou, Changjin; Ding, Yongjie; Zhang, He; Sun, Sixian; Xie, Linghai; Xia, Ruidong; Huang, Wei
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 16(2018)
• Page Start: 4501
• Page End: 4507
• Publication Date: 2018-04-12
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc00714d
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Spiro terfluorenes are shown to have improved ASE properties and the impressive lasing threshold of terfluorenes is demonstrated. Abstract : In order to investigate the inherent differences between spirofluorenes, two typical spirocycle models, spiro[fluorene-9, 9′-xanthene] (SFX) and spirobiflourene (SBF), were chosen to construct four spiro-terfluorenes (DSFX-OSFX, DSBF-OSFX, DOSFX-SFX and DOSFX-SBF) to investigate the effect of spirocycle substitution on photophysical and stimulated emission properties. The terfluorenes have similar absorption and photoluminescence properties. While the DOSFX-SBF film displays the best ASE properties with a threshold of 1.81 μJ cm −2, the lasing threshold of the 1-D DFB laser based on DOSFX-SBF is lowered to 0.85 μJ cm −2 . These results indicate that the type of spirofluorene has a dramatic influence on stimulated emission properties and spiro terfluorenes have potential applications in organic lasers.