Heptazine: an Electron-Deficient Fluorescent Core for Discotic Liquid Crystals

Indu Bala, Harpreet Singh, Venugopala Rao Battula, Santosh Prasad Gupta, Joydip De, Sunil Kumar, Kamalakannan Kailasam, Santanu Kumar Pal

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Herein, room-temperature discotic liquid crystals based on heptazine, an electron deficient central core, are reported for the first time. Mesomorphic behaviors of the materials are also investigated. Supramolecular assembly of the mesophase derivatives were confirmed by X-ray scattering experiments. Heptazine-based solid thin films are strong blue light emitters, whereas in the solution state, they are weakly emissive or non-emissive. The band gap energy is found to be low in this class of compounds. Formation of room-temperature mesophases, low band-gap behavior, and strong blue-light emission in the solid state are promising attributes for optoelectronic applications of the materials.

Original languageEnglish
Pages (from-to)14718-14722
Number of pages5
JournalChemistry - A European Journal
Issue number59
StatePublished - 20 Oct 2017
Externally publishedYes


  • blue light
  • columnar hexagonal materials
  • discotic behavior
  • heptazine
  • smectic

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Organic Chemistry


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