具有延伸聚甲基链的不对称酮菁染料。

IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Sviatoslava O Melnychuk, Sergii V Popov, Serhii B Babii, Andrii V Kulinich
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引用次数: 0

摘要

通过连续缩合反应合成了一系列长链酮菁(KCYs),并获得了良好的制备收率。在这些长链酮菁中,通过受体羰基的非中心定位和端基给电子能力的变化实现了发色团的不对称。所得染料表现出正的溶剂致色性,其范围随着端基供体强度的增加和过渡到更高的葡萄树而增加。新的KCYs是高效的荧光团,荧光量子产率高达40%,斯托克斯位移大,而它们的荧光带延伸到近红外(NIR)光谱区域。此外,不对称的KCYs被成功转化为阳离子聚苯乙烯衍生物,其吸收光谱和荧光光谱明显向更长的波长偏移。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Asymmetric Ketocyanine Dyes with an Extended Polymethine Chain.

A series of long-chain ketocyanines (KCYs), in which chromophore asymmetry is achieved through the noncentral positioning of the acceptor carbonyl group and variation in the electron-donating ability of the end groups, is synthesized via sequential condensation reactions and isolated with good preparative yields. The obtained dyes exhibit positive solvatochromism, with its range increasing as the donor strength of the terminal groups grows and upon transition to higher vinylogs. The new KCYs are efficient fluorophores, with fluorescence quantum yields up to 40% and large Stokes shifts, while their fluorescence bands extend into the near-infrared (NIR) spectral region. Furthermore, the asymmetric KCYs are successfully transformed into the cationic polymethine-styryl derivatives, which exhibit absorption and fluorescence spectra that are significantly shifted toward longer wavelengths.

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来源期刊
ChemistryOpen
ChemistryOpen CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
4.80
自引率
4.30%
发文量
143
审稿时长
1 months
期刊介绍: ChemistryOpen is a multidisciplinary, gold-road open-access, international forum for the publication of outstanding Reviews, Full Papers, and Communications from all areas of chemistry and related fields. It is co-owned by 16 continental European Chemical Societies, who have banded together in the alliance called ChemPubSoc Europe for the purpose of publishing high-quality journals in the field of chemistry and its border disciplines. As some of the governments of the countries represented in ChemPubSoc Europe have strongly recommended that the research conducted with their funding is freely accessible for all readers (Open Access), ChemPubSoc Europe was concerned that no journal for which the ethical standards were monitored by a chemical society was available for such papers. ChemistryOpen fills this gap.
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