Emission characteristics of carbon films in comparison with solvatochromic effects of carbon nanoparticles

R. G.S. Sofin*, A. Issac, M. R.S. Al-Naabi, M. T. Zar Myint, H. Htet Kyaw, Osama K. Abou-Zied

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Carbon nanoparticles (CNPs) are getting wide attention due to their fluorescence and low level of toxicity compared to other semiconducting photoluminescent materials. CNPs show strong ‘solvatochromism’, and the emission mechanism is still under discussion. Florescent carbon in the form of films would tremendously increase its potential for applications. In this work, we report for the first time the fluorescent emission characteristics of carbon films formed by aggregation of CNPs. Films of carbon were grown on glass substrates by using a novel Cold Vapour Deposition System. We have performed a detailed comparative study of the emission spectra of film and CNPs (prepared using the microwave synthesis method) in various solvents. A qualitative model based on solvatochromism of CNPs is used to understand the emission pathways in the film.

Original languageEnglish
Article number120442
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume266
DOIs
Publication statusPublished - Feb 5 2022
Externally publishedYes

Keywords

  • Carbon films
  • Carbon nanoparticles
  • Extinction coefficient
  • Fluorescence quantum yield
  • Solvatochromism

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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