Heliyon (Jan 2024)

Highly crystalline and fluorescent BODIPY-labelled phenyl-triazole-coumarins as n-type semiconducting materials for OFET devices

  • José Emilio de la Cerda-Pedro,
  • Oscar Javier Hernández-Ortiz,
  • Rosa Angeles Vázquez-García,
  • Efrén V. García-Báez,
  • Ramón Gómez-Aguilar,
  • Arián Espinosa-Roa,
  • Norberto Farfán,
  • Itzia I. Padilla-Martínez

Journal volume & issue
Vol. 10, no. 1
p. e23517

Abstract

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In this work, the synthesis of BODIPY-phenyl-triazole labelled coumarins (BPhTCs) using a two-step approach is described. The influence of the BODIPY appending on the photophysical, electrochemical and thermal properties of the phenyl-triazole-coumarin precursors (PhTCs) was investigated. Band gap energies were measured by absorption spectroscopy (2.20 ± 0.02 eV in the solid and 2.35 ± 0.01 eV in solution) and cyclic voltammetry (2.10 ± 0.05 eV). The results are supported by DFT calculations confirming the presence of lowest LUMO levels that facilitate the electron injection and stabilize the electron transport. Their charge-transport parameters were measured in Organic Field-Effect Transistor (OFET) devices. BPhTCs showed an ambipolar transistor behavior with good n-type charge mobilities (10−2 cm2V−1s−1) allowing these derivatives to be employed as promising semiconducting crystalline and fluorescent materials with good thermal and air stability up to 250 °C.

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