The monomers and polymers of azomethine-based thiocarbohydrazones: Fluorescent activities, fluorescence quantum yields of polymers in water and DMF solutions
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Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a family of azomethine-based thiocarbohydrazone monomers and polymers prepared and their structurally characterized by FT-IR, 1H-13C NMR and UV-Vis techniques. The electrochemical behaviors, fluorescent activities, thermal characteristics, antioxidant effectiveness of synthesized compounds were determined by cyclic voltammetry (CV), fluorescence (FL) spectroscopy, thermogravimetric-differential thermal analysis (TG-DTA), differential scanning calorimeter (DSC) and CUPRAC techniques, respectively. Fluorescence quantum yields of Poly-SATCH, Poly-BSATCH, Poly-MSATCH, Poly-NATCH were calculated to be 4.1, 9.4, 11.4 and 7.4 % in 0.025 mg mL-1 concentrations in DMF solutions in the range of 3 nm slit at 440, 420, 400 and 340 nm, respectively. The antioxidant values of monomer and polymers were changed between 0.30 +/- 0.029 and 3.54 +/- 0.719 against CUPRAC technique. The glass transition temperatures of Poly-SATCH, Poly-BSATCH, PolyMSATCH and Poly-NATCH were found to be 116, 134, 138 and 139, respectively.
Açıklama
Anahtar Kelimeler
Poly(thiocarbohydrazone), Structure characterization, Fluorescent activity, Fluorescence quantum yield, Multichromic emission, Photo stability, Antioxidant
Kaynak
Materials Science and Engineering B-Advanced Functional Solid-State Materials
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
282
