Charge-Transfer Complex of p-Aminodiphenylamine with Maleic Anhydride: Spectroscopic, Electrochemical, and Physical Properties

KARACA E., Can H., BOZKAYA U., Pekmez N.

CHEMPHYSCHEM, cilt.17, sa.13, ss.2056-2065, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 13
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1002/cphc.201600161
  • Dergi Adı: CHEMPHYSCHEM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2056-2065
  • Anahtar Kelimeler: charge-transfer complexes, maleic anhydride, NMR spectroscopy, p-aminodiphenylamine, UV/Vis spectroscopy, ALTERNATING COPOLYMERIZATION, CONJUGATED POLYMERS, ELECTRON-DONOR, BASIS-SET, SPECTRA, ACID, POLYMERIZATION, APPROXIMATION, IRRADIATION, PERFORMANCE
  • Hacettepe Üniversitesi Adresli: Evet

Özet

A new charge-transfer complex and the amide formed by the interaction between the electron donor of the p-aminodiphenylamine and the electron acceptor of maleic anhydride are investigated by spectroscopic methods. The amidation reaction is caused by proton and charge transfer between the maleic anhydride and p-aminodiphenylamine molecules. The Benesi-Hildebrand equation is used to determine the formation constant, the molar extinction coefficient and the standard Gibbs free energy of the complex by using UV/Vis spectroscopy. To reveal the electronic and spectroscopic properties of these molecules, theoretical computations are performed on the structures of maleic anhydride, p-aminodiphenylamine and the conformers of their charge-transfer complex. The charge-transfer complex and amidation reaction mechanism are also confirmed by IR and NMR spectroscopy and HRMS. The nature of the maleic anhydride-p-aminodiphenylamine complex is characterized by cyclic voltammetry, thermogravimetric analysis, XRD and SEM. Solid microribbons of this complex show higher thermal stability than p-aminodiphenylamine.