Monomolecular Layers of Pyrene as a Sensor to Dicarboxylic Acids
作者:Lining Gao、Yu Fang、Xiangpeng Wen、Yuangang Li、Daodao Hu
DOI:10.1021/jp0372385
日期:2004.1.1
plate surface via a flexible long spacer. The film shows combined monomer and excimer emission of pyrene both in wet and dry states, and the excimer may be formed mainly by direct excitation of ground-state dimers and/or monomers in aggregates. Classical Birks' scheme plays a little role in the formation of the excimers. The emission of the film is sensitive to the presence of dicarboxylic acids, including
Pyrenyl-functionalized ferrocenes for multisignaling recognition of anions
作者:Li Zhou、Xiang-Tian Fan、Yu-Di Xu、Qian-Yong Cao
DOI:10.1039/c5nj01995h
日期:——
di-substituted pyrene-appended ferrocenes bearing amide or amide–sulfonamide binding sites, 1–4, have been synthesized, and their anion recognition abilities have been investigated. In CH3CN solution, all receptors show distinctive electrochemicalsensing of F− and H2PO4− with a large cathodic shift in the ferrocene/ferrocenium redox potential, with 4 showing the strongest anion binding ability. In addition
合成了带有酰胺或酰胺-磺酰胺结合位点1-4的新的单和双取代pyr加成二茂铁,并对其阴离子识别能力进行了研究。在CH 3 CN溶液,所有受体显示的F独特电化学感测-和H 2 PO 4 -与二茂铁/二茂铁鎓氧化还原电位大的阴极移,与4示出了最强的阴离子结合的能力。此外,受体3和4的轴承酰胺磺酰胺结合位点还表现出对ACO荧光响应-和H 2 PO 4 -发射强度大大提高。还通过1 H NMR滴定和DFT计算研究了3和阴离子之间的结合机理。
New ferrocene-pyrene dyads bearing amide/thiourea hybrid donors for anion recognition
作者:Hongwei Huang、Zhaohui Xin、Lin Yuan、Bin-Yong Wang、Qian-Yong Cao
DOI:10.1016/j.ica.2018.08.055
日期:2018.11
AcO − and H2PO4− , with the ferrocene-based redox potential showing a large negative shift. Interestingly, both 1 and 2 exhibited an exclusive fluorescence sensing of F− over other anions, with the fluorescence of the receptors showing a turn-off response. Further, the binding mechanism between receptors and anions was confirmed by 1 H NMR titrations, which reveal that the two thiourea NH donors
摘要设计并制备了两个带有酰胺和硫脲供体的新的二茂铁-re二联体(1和2),用于阴离子识别。1的结构还通过X射线单晶分析来表征。通过电子化学和荧光技术充分研究了1和2的阴离子识别能力。在CH 3 CN溶液中,1和2均表现出对F-,AcO-和H 2 PO 4-的良好电化学感应,二茂铁基氧化还原电势显示出较大的负移。有趣的是,1和2均显示出F-优于其他阴离子的荧光,而受体的荧光则显示出关断响应。此外,通过1 H NMR滴定确定了受体与阴离子之间的结合机理,这表明两个硫脲NH供体与酰胺供体协同作用,
A pyrenyl-appended organogel for fluorescence sensing of anions
3-trioctyloxyphenyl-based organogel (G1) containing a pyrene fluorophore and urea-sulfonamide anion binding sites was designed and synthesized. Gelator G1 can form stable organogels with dramatic aggregation-induced emission (AIE) in some organic solvents. The self-assemble mechanism of G1 was investigated by concentration depended 1H NMR, XRD, FT-IR and SEM techniques. In addition, G1 shows good fluorescence
设计并合成了包含,荧光团和脲磺酰胺阴离子结合位点的1,2,3-三辛氧基氧基苯基基有机凝胶(G1)。Gelator G1可以形成稳定的有机凝胶,在某些有机溶剂中具有明显的聚集诱导发射(AIE)。通过浓度依赖的1 H NMR,XRD,FT-IR和SEM技术研究了G1的自组装机理。此外,G1示出了良好的荧光感测能力的一些选择的阴离子,如F -和ACO - 。在DMF溶液中,加入F的-进入有机凝胶G1图1显示了AIE淬灭后的凝胶-凝胶相变。然而,ACO的加入-导致与小荧光变化的凝胶-溶胶转变。
CATALYTIC HYBRIDIZATION SYSTEMS FOR THE DETECTION OF NUCLEIC ACID SEQUENCES BASED ON THEIR ACTIVITY AS COFACTORS IN CATALYTIC REACTIONS IN WHICH A COMPLEMENTARY LABELED NUCLEIC ACID PROBE IS CLEAVED