Research Abstract



Nonvolatile liquid anthracenes for facile full-colour luminescence tuning at single blue-light excitation

2013年6月7日 Nature Communications 4 : 1969 doi: 10.1038/ncomms2969 (2013)


Sukumaran Santhosh Babu1, Martin J. Hollamby1, 相見 順子1, 小澤 寛晃1, 佐伯 昭紀2, 関 修平2, 小林 健二3, 萩原 啓太4, 吉沢 道人4, Helmuth Möhwald5 & 中西 尚志1

  1. 物質・材料研究機構
  2. 大阪大学大学院 工学研究科 応用化学専攻
  3. 静岡大学理学部化学科
  4. 東京工業大学 資源化学研究所
  5. マックス・プランク コロイド・界面化学研究所(独)

Nonvolatile luminescent liquids are solvent-free fluids with a range of flexible electronic applications. Here, the authors show that anthracenes enveloped in branched aliphatic compounds are stable emissive liquids, with emissive and thermoresponsive properties that may be tuned by addition of dopants.

Nonvolatile room-temperature luminescent molecular liquids are a new generation of organic soft materials. They possess high stability, versatile optical properties, solvent-free fluid behaviour and can effectively accommodate dopant dye molecules. Here we introduce an approach to optimize anthracene-based liquid materials, focussing on enhanced stability, fluorescence quantum yield, colour tunability and processability, with a view to flexible electronic applications. Enveloping the anthracene core in low-viscosity branched aliphatic chains results in stable, nonvolatile, emissive liquid materials. Up to 96% efficient energy-transfer-assisted tunable emission is achieved by doping a minute amount of acceptor dye in the solvent-free state. Furthermore, we use a thermoresponsive dopant to impart thermally controllable luminescence colours. The introduced strategy leading to diverse luminescence colours at a single blue-light excitation can be an innovative replacement for currently used luminescent materials, providing useful continuous emissive layers in developing foldable devices.