Thickness-dependent full-color emission tunability in a flexible carbon dot ionogel

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Yu Wang
  • Sergii Kalytchuk
  • Yu Zhang
  • Hengchong Shi
  • Stephen V. Kershaw

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1412-1420
Journal / PublicationJournal of Physical Chemistry Letters
Volume5
Issue number8
Early online date2 Apr 2014
Publication statusPublished - 17 Apr 2014

Abstract

Multicolor luminescent materials are of immense importance nowadays, while it still constitutes a challenge to achieve luminescence color tunability, transparency, and flexibility at the same time. Here we show how ultrasmall carbon dots (CDs) fluorescing strongly across the visible spectrum can be surface functionalized and incorporated into highly flexible hybrid materials by combination with ionic liquids within silica gel networks to form CD-ionogels with properties promising for fabrication of flexible displays and other optical technologies without the use of any toxic materials. We demonstrate how the emission from such hybrid materials can be tuned across a large range of the Commission Internationale de lEnclairage (CIE) display gamut giving full-color performance. We highlight how the rich ladder of emissive states attributable to organic functional groups and CD surface functionalization supports a smooth sequential multiple self-absorption tuning mechanism to red shift continuously from blue emitting n-π* transitions down through the lower energy states. © 2014 American Chemical Society.

Research Area(s)

  • carbon dots, emission tunability, full-color emission, ionic liquids, ionogels

Citation Format(s)

Thickness-dependent full-color emission tunability in a flexible carbon dot ionogel. / Wang, Yu; Kalytchuk, Sergii; Zhang, Yu; Shi, Hengchong; Kershaw, Stephen V.; Rogach, Andrey L.

In: Journal of Physical Chemistry Letters, Vol. 5, No. 8, 17.04.2014, p. 1412-1420.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review