Photo- and ionochromic N-acylated 2-(aminomethylene)benzo[b]thiophene-3(2H)-ones containing a terpyridine receptor

IF 4.1 3区 化学 Q2 CHEMISTRY, PHYSICAL Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-10-05 DOI:10.1016/j.jphotochem.2024.116066
Vladimir P. Rybalkin , Sofiya Y. Zmeeva , Lidiya L. Popova , Anton V. Lisovin , Mikhail E. Kletskii , Oleg N. Burov , Irina V. Dubonosova , Oleg P. Demidov , Olga Y. Karlutova , Evgenii N. Shepelenko , Vitaly A. Podshibyakin , Alexander D. Dubonosov , Vladimir A. Bren
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Abstract

New photo- and ionochromic N-acylated 2-(aminomethylene)benzo[b]thiophen-3(2H)-ones containing a terpyridine receptor have been synthesized. They absorb in the visible region of the spectrum at 423–426 nm and exhibit emission at 463–468 nm. Their irradiation in acetonitrile with light of 436 nm leads to a multi-stage rearrangement, including Z/E isomerization about the CC bond, N → O migration of the acyl group and the formation of non-emissive O-acylated E-isomers, which were isolated preparatively. Their structure was established unambiguously by IR, 1H, 13C NMR spectroscopy and HR mass spectrometry. The reverse thermal reaction with O → N migration of the acyl group is catalyzed by acid catalysts. N-Acylated compounds in acetonitrile selectively form non-fluorescent complexes with Fe2+ cations, which is accompanied by the naked-eye effect with changing the color from yellow to maroon. A successful selective interaction with AcO led to the restoration of the initial absorption and emission properties. Density functional theory (DFT) calculations at the M06-2X/def2-TZVP level with the PCM solvation method were used to explain the observed photoisomerizations and ionochromic transformations. The obtained compounds represent multifunctional on-off-on molecular switches of optical and fluorescent properties upon sequential exposure to light and H+ or sequential addition of Fe2+ and AcO ions. A combinatorial logic gate was designed based on the basis of these switching properties.

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含有萜吡啶受体的光致和离子致色 N-酰化 2-(氨基亚甲基)苯并[b]噻吩-3(2H)-酮
我们合成了含有萜吡啶受体的新型光致和离子致色 N-酰化 2-(氨基亚甲基)苯并[b]噻吩-3(2H)-酮。它们在波长 423-426 纳米的可见光谱区吸收,并在波长 463-468 纳米处发射。在乙腈中用波长为 436 纳米的光照射它们,会导致多级重排,包括关于 CC 键的 Z/E 异构化、酰基的 N → O 迁移以及形成非辐射性的 O-酰化 E-异构体,这些异构体已被分离出来。通过红外光谱、1H、13C NMR 光谱和 HR 质谱分析,明确地确定了它们的结构。在酸催化剂的催化下,酰基发生了 O → N 迁移的反向热反应。乙腈中的 N-酰基化合物可选择性地与 Fe2+ 阳离子形成无荧光络合物,并伴随着颜色从黄色变为褐红色的肉眼效应。与 AcO- 成功的选择性相互作用恢复了最初的吸收和发射特性。密度泛函理论(DFT)计算在 M06-2X/def2-TZVP 水平上采用 PCM 溶解法解释了观察到的光异构化和离子变色。在连续暴露于光和 H+或连续加入 Fe2+ 和 AcO- 离子时,所获得的化合物代表了光学和荧光特性的多功能开关。根据这些开关特性,我们设计了一种组合逻辑门。
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来源期刊
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.
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