Cyanine dyes from novel dihydrophenanthrene derivatives

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-01-08 DOI:10.1016/j.dyepig.2025.112635

Arunkumar Easwaran

引用次数: 0

Abstract

Dihydrophenanthrene derived novel indolenines synthesized and characterized. Both the isomeric indolenines were isolated using automated flash chromatography. The newly synthesized isomers were converted to the indolium salt followed by symmetric and unsymmetric cyanine dye synthesis. The dihydrophenanthrene (DHP) based symmetric cyanines in comparison to the asymmetric DHP- indolium cyanines showed an additional red shift in the absorption and emission properties of the dyes due to the extra conjugation coming from the DHP ring. Unsubstituted DHP based symmetric cyanines showed strong aggregation under aqueous conditions. All dyes showed a negative solvatochromic behavior in both absorption and emission studies.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.