Advantages of naphthalene as a building block for organic solid state laser dyes: Smaller energy gaps and enhanced stability

Yuya Oyama, Masashi Mamada, Akihiro Kondo, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

Abstract

Organic laser dyes exhibiting very low amplified spontaneous emission (ASE) thresholds in green and yellow regions were developed based on a stilbene structure which is often used for the blue laser molecules. Although the thresholds are generally increased with decreasing energy levels of molecules, the introduction of a naphthalene unit can shift the emission colors without sacrificing optical properties. In particular, the suppression of concentration quenching by naphthalene moieties resulted in high radiative decay rate constants and low ASE thresholds in the neat films. In addition, the photo- and thermal-stabilities of the naphthalene derivatives were improved compared to those of the corresponding phenylene derivatives. This study demonstrates a simple and effective molecular design for developing green and yellow laser dyes by a small modification from the standard blue emitters.

Original languageEnglish
Pages (from-to)4112-4118
Number of pages7
JournalJournal of Materials Chemistry C
Volume9
Issue number12
DOIs
Publication statusPublished - Mar 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Advantages of naphthalene as a building block for organic solid state laser dyes: Smaller energy gaps and enhanced stability'. Together they form a unique fingerprint.

Cite this