Napredna pretraga

Pregled bibliografske jedinice broj: 891935

Aromatic hydrazones derived from nicotinic acid hydrazide as fluorimetric pH sensing molecules: structural analysis by computational and spectroscopic methods in solid phase and in solution


Benković, Tomislav; Kenđel, Adriana; Parlov- Vuković, Jelena; Kontrec, Darko; Chiş, Vasile; Miljanić, Snežana; Galić, Nives
Aromatic hydrazones derived from nicotinic acid hydrazide as fluorimetric pH sensing molecules: structural analysis by computational and spectroscopic methods in solid phase and in solution // Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 190 (2018), 259-267 doi:10.1016/j.saa.2017.09.038 (međunarodna recenzija, članak, znanstveni)


Naslov
Aromatic hydrazones derived from nicotinic acid hydrazide as fluorimetric pH sensing molecules: structural analysis by computational and spectroscopic methods in solid phase and in solution

Autori
Benković, Tomislav ; Kenđel, Adriana ; Parlov- Vuković, Jelena ; Kontrec, Darko ; Chiş, Vasile ; Miljanić, Snežana ; Galić, Nives

Izvornik
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (1386-1425) 190 (2018); 259-267

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
1D and 2D NMR ; FT-IR ; Raman ; UV-Vis spectroscopy ; fluorescence ; computational study ; fluorimetric pH sensors

Sažetak
Structural analyses of aroylhydrazones were performed by computational and spectroscopic methods (solid state NMR, 1 and 2D NMR spectroscopy, FT-IR (ATR) spectroscopy, Raman spectroscopy, UV-Vis spectrometry and spectrofluorimetry) in solid state and in solution. The studied compounds were N'-(2, 3- dihydroxyphenylmethylidene)-3- pyridinecarbohydrazide (1), N'-(2, 5- dihydroxyphenylmethylidene)-3- pyridinecarbohydrazide (2), N'-(3-chloro-2- hydroxy-phenylmethylidene)-3- pyridinecarbohydrazide (3), and N'-(2-hydroxy- 4-methoxyphenyl-methylidene)-3- pyridinecarbohydrazide (4). Both in solid state and in solution, all compounds were in ketoamine form (form I, –CO–NH–N=C–), stabilized by intramolecular H-bond between hydroxyl proton and nitrogen atom of the C=N group. In solid state, the C=O group of 1–4 were involved in additional intermolecular H- bond between closely packed molecules. Among hydrazones studied, the chloro- and methoxy- derivatives have shown pH dependent and reversible fluorescence emission connected to deprotonation/protonation of salicylidene part of the molecules. All findings acquired by experimental methods (NMR, IR, Raman, and UV- Vis spectra) were in excellent agreement with those obtained by computational methods.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Ustanove
INA-Industrija nafte d.d.,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati