Single-Crystalline Optical Microcavities from Luminescent Dendrimers

Kohei Iwai, Hiroshi Yamagishi, Colin Herzberger, Yuji Sato, Hayato Tsuji, Ken Albrecht, Kimihisa Yamamoto, Fumio Sasaki, Hiroyasu Sato, Aswin Asaithambi, Axel Lorke, Yohei Yamamoto

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Microcrystallites are promising minute mirrorless laser sources. A variety of luminescent organic compounds have been exploited along this line, but dendrimers have been inapplicable owing to their fragility and extremely poor crystallinity. Now, a dendrimer family that overcomes these difficulties is presented. First-, second-, and third-generation carbazole (Cz) dendrimers with a carbon-bridged oligo(phenylenevinylene) (COPV2) core (GnCOPV2, n=1–3) assemble to form microcrystals. The COPV2 cores align uni/bidirectionally in the crystals while the Cz units in G2- and G3COPV2 align omnidirectionally. The dendrons work as light-harvesting antennas that absorb non-polarized light and transfer it to the COPV2 core, from which a polarized luminescence radiates. Furthermore, these crystals act as laser resonators, where the lasing thresholds are strongly coupled with the crystal morphology and the orientation of COPV2, which is in contrast with the conventional amorphous dendrimers.

本文言語英語
ページ(範囲)12674-12679
ページ数6
ジャーナルAngewandte Chemie - International Edition
59
31
DOI
出版ステータス出版済み - 7 27 2020

All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学 (全般)

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