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A combined experimental and computational study of electrochemical and photophysical properties of new benzophenone derivatives functionalized with N-substituted-phenyl-1,3,4-thiadiazole-2-amine    
Yazarlar
Prof. Dr. İzzet ŞENER
Kastamonu Üniversitesi, Türkiye
Çiğdem Şahin
Pamukkale Üniversitesi, Türkiye
Serkan Demir
Giresun Üniversitesi, Türkiye
Prof. Dr. Nesrin ŞENER
Kastamonu Üniversitesi, Türkiye
Doç. Dr. Mahmut GÜR
Kastamonu Üniversitesi, Türkiye
Özet
New benzophenone derivatives with N-substituted-1,3,4-thiadiazole including different substituents were synthesized and characterized by using FTIR, NMR, UV/Visible, and fluorescence spectroscopies and cyclic voltammetry. The effect of –F, -Cl, –OCH3 and –NO2 substitutions at ortho-, meta-, para-positions on the photoluminescence properties of the molecules have been investigated. The results indicate that the electron-donating and electron-withdrawing moieties at the ortho-, meta-, and para-positions have an important effect on the photoluminescence properties of the molecules. The calculated the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) energy levels are in the range of (−5.55) to (−5.65) eV and (−2.83) to (−3.02), respectively. The lower LUMO energy levels were observed for the molecules with –OCH3 substituents due to the donor strength of the substituent. Excited states and electrochemical properties of the molecules were also comprehensively and quantitatively studied by Density Functional Theory and Time-Dependent Density Functional Theory calculations. Experimental trends were successfully revealed by calculated data.
Anahtar Kelimeler
Benzophenone,Thiadiazole,Photoluminescence,DFT calculation
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Journal of Molecular Structure
Dergi ISSN 0022-2860
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 03-2020
Cilt No 1203
Sayfalar 127475 /
Doi Numarası 10.1016/j.molstruc.2019.127475
Makale Linki https://linkinghub.elsevier.com/retrieve/pii/S0022286019315844