Blue shifted push pull Phenalenone dyes: An unconventional behavior in membranes

IF 4.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-09-01 Epub Date: 2026-03-10 DOI:10.1016/j.jphotochem.2026.117188

J. Robles-Rivero , C. Silva , Y.H.A. Cho , S.A. Sanchez , R. Ormazábal-Toledo , G. Gunther

引用次数: 0

Abstract

Push–pull organic dyes are valuable fluorescent probes due to their sensitivity to environmental polarity. Phenalenone-based systems, however, remain scarcely explored. We investigated three 6-alkylmethylamino phenalenone derivatives in solvents of varying polarity and in liposomal environments. Unexpectedly, all compounds exhibited a consistent blue shift in fluorescence within fluid liposomes, contrasting with the red shifts typically observed in related dyes, such as LAURDAN. The results demonstrate the environmental sensitivity of phenalenone-based dyes. Although they display a trend contrary to that of conventional probes, they nonetheless highlight their potential for investigating polarity in biologically relevant systems.

Abstract Image

查看原文本刊更多论文

蓝移推拉苯烯酮染料：膜中的一种非常规行为

推挽式有机染料由于其对环境极性的敏感性而成为有价值的荧光探针。然而，以苯酞酮为基础的系统仍然很少被探索。我们在不同极性的溶剂和脂质体环境中研究了三种6-烷基甲基胺苯烯酮衍生物。出乎意料的是，所有化合物在液体脂质体中都表现出一致的荧光蓝移，与在相关染料（如LAURDAN）中通常观察到的红移形成鲜明对比。结果表明，苯烯酮基染料具有良好的环境敏感性。尽管它们显示出与传统探针相反的趋势，但它们仍然突出了它们在生物学相关系统中研究极性的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.