MOLECULAR STRUCTURE ANALYSIS AND SPECTROSCOPIC PROPERTIES OF MONOAZO DISPERSE DYE FROM N,N-DIMETHYLANILINE

Nurgul SEFEROGLU; Ömer ARSLAN; Ergin YALÇIN; Müjgan YAMAN; Zeynel SEFEROGLU

Makale detayları

MOLECULAR STRUCTURE ANALYSIS AND SPECTROSCOPIC PROPERTIES OF MONOAZO DISPERSE DYE FROM N,N-DIMETHYLANILINE

Yazarlar:

Nurgul SEFEROGLU | Ömer ARSLAN | Ergin YALÇIN | Müjgan YAMAN | Zeynel SEFEROGLU

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2017 Vol.30 Issue 1, pp.175-189

Belge Tipi:

Makale

Yayın Tarihi:

3/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000428494

eISSN:

2147-1762

Özet:

 


A monoazo disperse dye (DMA) has been prepared by diazotizing 4-aminoacetophenone and coupling with N,N-dimetylaniline. It was fully characterized using IR, 1H-NMR, 13C-NMR and mass spectral techniques. Structural assignments of the dye were made using X-ray crystallographic methods. The electronic absorption spectra of the dye in solvents of different polarities covers a λmax range of 437-460 nm. It is showed that the compound exhibits positive solvatochromism in solution, namely the absorption band is red shifted with increasing solvent polarity. In addition, the absorption properties of the dye change drastically upon acidification, as the protonation of β-nitrogen atom of the azo group increases the donor-acceptor interplay of the π system. The molecular structure, spectroscopic and nonlinear optical (NLO) properties of azo dye have been also investigated theoretically by performing Density Functional Theory (DFT) and Hartree–Fock (HF) levels of theory using the 6-31+G(d,p) basis set. The optimized geometries, electronic absorption spectra calculated using time-dependent DFT (TD-DFT) method and NMR spectra are evaluated via comparison with experimental values. In addition, thermal analysis shows that this dye is thermally stable up to 258 oC.

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Makale detayları

MOLECULAR STRUCTURE ANALYSIS AND SPECTROSCOPIC PROPERTIES OF MONOAZO DISPERSE DYE FROM N,N-DIMETHYLANILINE

Yazarlar: Nurgul SEFEROGLU | Ömer ARSLAN | Ergin YALÇIN | Müjgan YAMAN | Zeynel SEFEROGLU

Yayıncı: Gazi University

Dergi: Gazi University Journal of Science 2017 Vol.30 Issue 1, pp.175-189

Belge Tipi: Makale

Yayın Tarihi: 3/2017

Belge Dili: Türkçe

Document ID (Org No.): 2000428494

eISSN: 2147-1762

Sayı

Yazarlar:

Nurgul SEFEROGLU | Ömer ARSLAN | Ergin YALÇIN | Müjgan YAMAN | Zeynel SEFEROGLU

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2017 Vol.30 Issue 1, pp.175-189

Belge Tipi:

Makale

Yayın Tarihi:

3/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000428494

eISSN:

2147-1762