描述了多功能二噻吩并[3,2- b ; 2',3'- d ]噻吩(DTT)三聚体的设计,合成和评估。由一个DTT受体和两个DTT供体组成的扭曲推拉或供体-供体-受体(DDA)三聚体在脂质双层膜中表现出很强的机械变色作用。激发的红移而不是发射和荧光恢复随膜序的增加而变化,这与扭曲的超长机械基团在基态下的平面化一致。具有深σ的互补拉挽或AAA三聚体整个支架上的孔在膜上不是机械变色的,但在亚微摩尔阴离子运输活性方面表现出色。沿硫族元素键的跨膜字符串进行阴离子传输是前所未有的,并完成了先前在跨膜级联反应上的结果,跨膜级联具有同样非正统的相互作用,如卤素键和阴离子-π相互作用。
Synthesis and photochromic reactivity of a new class of photochromic diarylethene dimer-containing dithieno[3,2-b:2′3′-d]thiophene
作者:Hongke Wang、Wei Xu、Daoben Zhu
DOI:10.1016/j.tet.2012.08.026
日期:2012.10
Novel photochromic diarylethene dimers containing dithieno[3,2-b:2′3′-d]thiophene were synthesized and their photochromicproperties were studied in solution as well as in the crystalline phase. Only the isomer with the diarylethene units one in open-form and one in closed-form was produced upon irradiation with ultraviolet light because of the intramolecular excitation energy transfer in this isomer
合成了含有二噻吩并[3,2- b:2'3'- d ]噻吩的新型光致变色二芳基乙烯二聚体,并在溶液和结晶相中研究了它们的光致变色性能。由于在该异构体中分子内激发能的转移,因此在紫外线照射下仅产生具有二芳基乙烯单元的一种异构体,一种为开放形式,一种为封闭形式。还与计算研究相关地研究了它们的电化学性质。
Twisted Push-Pull Probes with Turn-On Sulfide Donors
作者:Quentin Verolet、Marta Dal Molin、Adai Colom、Aurélien Roux、Laure Guénée、Naomi Sakai、Stefan Matile
DOI:10.1002/hlca.201600328
日期:2017.2
According to Hammett constants, we thought that sulfides could provide access to such a conceptually innovative donor‐acceptor switch. To elaborate on this hypothesis, we here describe the design, synthesis and evaluation of a comprehensive series of twisted push‐pull probes with turn‐on sulfidedonors. Their planarization is explored in lipid bilayer membranes of different thickness and fluidity from liquid‐disordered
可平面化和可极化的二噻吩并[3,2- b ; 2',3'- d ]噻吩(DTT)二聚体最近作为荧光探针被报道,该荧光探针报道了膜流动性随激发红移,即。在基态平面化。在这项研究中,我们详细阐述了以下假设:在一个非正统取代基的情况下,扭曲推挽式探针可能会发挥最佳性能,该取代基可充当富电子的弱受体和贫电子的芳族化合物的强供体。根据哈米特常数,我们认为硫化物可以为这种概念上创新的供体-受体转换提供途径。为了详细说明这一假设,我们在此描述具有开启的硫化物供体的一系列全面的扭曲推挽式探针的设计,合成和评估。在不同厚度和流动性的脂双层膜中研究了它们的平面化,从液乱相到液序相和固序相。将膜的结果与不同直径的晶体,蛋白质和环糊精大环中的开启机制的平面化进行比较。
Design and Synthesis of Mixed Oligomers with Thiophenes, Dithienothiophene <i>S</i>
,<i>S</i>
-Dioxides, Thieno[3,4]pyrazines and 2,1,3-Benzothiadiazoles: Flipper Screening for Mechanosensitive Systems
作者:Quentin Verolet、Saeideh Soleimanpour、Kaori Fujisawa、Marta Dal Molin、Naomi Sakai、Stefan Matile
DOI:10.1002/open.201402139
日期:2015.6
push–pull oligomers to create membrane probes with high mechanosensitivity and long fluorescence lifetime. Here, the synthesis and characterization of thieno[3,4]pyrazines and 2,1,3‐benzothiadiazoles are described in comparison with the original dithienothiophene S,S‐dioxides. Dithienothiophene S,S‐dioxide flippers are confirmed as the best reported so far, and poor results with single flipper probes support
Photochromism of diarylethenes containing dithieno[3,2-b:2′,3′-d]thiophene
作者:Hongke Wang、Wei Xu、Daoben Zhu
DOI:10.1016/j.dyepig.2013.01.011
日期:2013.5
Novelphotochromic diarylethene and diarylethene dimer containing dithieno[3,2-b:2′,3′-d]thiophene were designed and synthesized to compare their photochromic properties. Photochromism in solution and in the crystalline phase, fluorescence, electrochemical character, and theoretical calculations of the two compounds were studied. Both of them showed remarkable photochromic performance in the solution
1,2-Bis (3,5-dimethyl dithioene [3,2-b:2′,3′-d]thiophene -2-yl) perfluorocyclopentene: synthesis and photochromic reaction in solution and LB films
作者:Hui Lin、Wei Xu、Daoben Zhu
DOI:10.1039/b913149c
日期:——
A new photochromic compound 1,2-Bis (3,5-dimethyl dithioene [3,2-b:2â²,3â²-d]thiophene -2-yl) perfluorocyclopentene (BDDTP) was synthesized with an improved procedure. The photochromic reaction of this compound was investigated by UVâvisible absorption spectroscopy, 1H NMR spectroscopy and electrochemical characterizations in solution. Thin films of BDDTP were prepared using LangmuirâBlodgett (LB) technology. A photobleaching reaction accompanied by conductance changes was observed when LB films were prepared from the BDDTP solution in a photostationary state under UV photoirradiation. Quantum chemical simulations were applied for understanding the color changes in the photochromic reaction.