Low-temperature synthesis of solution processable carbon nitride polymers

Junyi Li, Neeta Karjule, Jiani Qin, Ying Wang, Jesús Barrio, Menny Shalom

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Carbon nitride materials require high temperatures (>500C) for their preparation, which entails substantial energy consumption. Furthermore, the high reaction temperature limits the materials’ processability and the control over their elemental composition. Therefore, alternative synthetic pathways that operate under milder conditions are still very much sought after. In this work, we prepared semiconductive carbon nitride (CN) polymers at low temperatures (300C) by carrying out the thermal condensation of triaminopyrimidine and acetoguanamine under a N2 atmosphere. These molecules are isomers: they display the same chemical formula but a different spatial distribution of their elements. X-ray photoelectron spectroscopy (XPS) experiments and electrochemical and photophysical characterization confirm that the initial spatial organization strongly determines the chemical composition and electronic structure of the materials, which, thanks to the preservation of functional groups in their surface, display excellent processability in liquid media.

Original languageEnglish
Article number1646
JournalMolecules
Volume26
Issue number6
DOIs
StatePublished - 2 Mar 2021

Keywords

  • Low-temperature synthesis
  • Polymeric carbon nitride
  • Solution-processable polymers

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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