Effect of acidity on the polarization sensitivity of azo-indicator based recording media*

Shaverdova, V. G.; Petrova, S. S.; Purtseladze, A. L.; Tarasashvili, V. I.; Obolashvili, Nino

doi:10.1007/s10812-013-9709-4

Cited by 4 publications

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“…With the discovery of azo compounds in 1800s, azobenzene derivatives containing chromophore ―N═N― (azo) group have been utilized in a wide range of areas, like displays, energy, therapeutic molecules, and digital printing . Azo dyes are a versatile class of colored organic chromophores in industries as pigments, indicators, and therapeutic agents . Azobenzene that is composed of 2 phenyl rings joint by an azo, (—N═N―) linkage has attracted researcher's attention in such fields as imaging systems, optical computers, optical memories storage, photodetectors, and nonlinear optical applications .…”

Section: Introductionmentioning

confidence: 99%

“…8,9 Azo dyes are a versatile class of colored organic chromophores in industries as pigments, indicators, and therapeutic agents. [10][11][12] Azobenzene that is composed of 2 phenyl rings joint by an azo, (-N═N-) linkage has attracted researcher's attention in such fields as imaging systems, optical computers, optical memories storage, photodetectors, and nonlinear optical applications. [13][14][15][16] The materials containing azo linkage present photoactive features with potential application as optical photo switches, organic solar cells, reversible information storage, bioengineering devices,…”

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confidence: 99%

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Polymerization of Chrysoidine with chemical and enzymatic oxidative preference: Synthesis, characterization, and spectroscopic study

Kaya

Kolcu

2018

Polymers for Advanced Techs

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Chrysoidine (CHRY) is a type of azo‐dye extensively used in industry. This study delineates 2 routes as enzymatically and oxidatively polycondensation of chrysoidine for the syntheses of poly (chry‐enz) and poly (chry‐ox), respectively. The molecular structures of enzymatically and oxidatively polymerized chrysoidine were described by the FT‐IR, UV‐Vis, 1H‐NMR, and 13C‐NMR techniques. The molecular structures were obtained to be different as in the cyclization process of the enzymatic polymerization. Solvatochromic behavior in selected polar solvents on the optical properties of poly (chry‐ox) were studied. Further characterization was implemented by fluorescence (PL), electrochemical, thermogravimetric (TG‐DTA), cyclic voltammetry (CV), and differential scanning calorimetry (DSC) measurements. The number of average molecular weight of poly(chry‐ox) was found to be higher than that of poly(chry‐enz). Photoluminescence (PL) measurements enlightened the response of poly (chry‐ox) with intense light emissions upon a bicolor irradiation by Ultra‐Violet and visible light. CV technique was utilized to make a comment about HOMO‐LUMO energy levels and electrochemical ( Eg') band gaps of the polymers. Optical and electrochemical band gaps of poly (chry‐enz) were lower than those of poly (chry‐ox), proving the successful synthesis of π‐conjugated structure of poly (chry‐enz). To further make comments about the features of the polymers, scanning electron microscopy (SEM) images were exemplified to study the surface forms of the polymers. Surface morphology of poly (chry‐enz) was seen as agglomerates of grains toward the out‐of‐plane direction. As the polymerization method was changed, the morphology was transformed into a flat‐smooth surface present with visible holes for poly (chry‐ox).

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