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Synthesis and Characterization of New γ-Substituted Pentamethine Cyanine Dyes

Abdolmohammad Mehranpour, Sedigheh Hashemnia, R. Maghamifar

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Abstract

Three novel pentamethine cyanine dyes with 3,5-dimethylpyridinium-1-yl and 4-benzylpyridinium-1-yl substituents in γ position of the methine chain were synthesized via a three-step procedure. The visible spectral behavior of these pentamethine cyanine dyes was examined in DMSO. Elemental analysis, IR, 1H-NMR, 13C-NMR, and Mass spectral data confirmed the molecular structure of the newly synthesized compounds.

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What this paper is about

Three novel pentamethine cyanine dyes with 3,5-dimethylpyridinium-1-yl and 4-benzylpyridinium-1-yl substituents in γ position of the methine chain were synthesized via a three-step procedure. The visible spectral behavior of these pentamethine cyanine dyes was examined in DMSO. Elemental analysis, IR, 1H-NMR, 13C-NMR, and Mass spectral data confirmed the molecular structure of the newly synthesized compounds.

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Available abstract

Three novel pentamethine cyanine dyes with 3,5-dimethylpyridinium-1-yl and 4-benzylpyridinium-1-yl substituents in γ position of the methine chain were synthesized via a three-step procedure. The visible spectral behavior of these pentamethine cyanine dyes was examined in DMSO. Elemental analysis, IR, 1H-NMR, 13C-NMR, and Mass spectral data confirmed the molecular structure of the newly synthesized compounds.

Key concepts: Cyanine, Chemistry, Elemental analysis, Proton NMR, Characterization (materials science), Carbon-13 NMR, Spectral properties, Spectral analysis

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