本文介绍了用于 Cu 2+的新型荧光化学传感器的设计和完整表征。传感器的结构基于查耳酮骨架作为发色单元,二-(2-甲基吡啶)胺(DPA)作为受体部分。合成并充分表征了带有一个或两个查耳酮-DPA 单元的两个系统。 使用几种金属离子进行紫外-可见滴定,两种化学传感器在添加 Cu 2+后的吸收光谱中都表现出强烈的低色移,表明该金属比其他二价阳离子具有更高的选择性。此外,在相同条件下记录的荧光光谱显示,在存在 Cu 2+的情况下,即使存在其他金属阳离子,也具有更强的猝灭效应,两种化学传感器的结合常数均高于 10 6 M -1且检测限低于微摩尔水平. 准备了带有其中一种化学传感器的纸试纸条,以证明其可能用于检测水性样品中的铜。
Highly Selective Detection of Nerve‐Agent Simulants with BODIPY Dyes
作者:Andrea Barba‐Bon、Ana M. Costero、Salvador Gil、Anthony Harriman、Félix Sancenón
DOI:10.1002/chem.201304475
日期:2014.5.19
Two chromo‐fluorogenic probes, each based on the boron dipyrromethene core, have been developed for the detection of nerve‐agent mimics. These chemosensors display both a color change and a significant enhancement of fluorescence in the presence of diethylcyanophosphonate (DCNP) and diisopropylfluorophosphate (DFP). No interference from other organophosphorus compounds or acids has been observed. Two
Synthesis and Biological Evaluation of Novel 2-Aryl Benzimidazoles as Chemotherapeutic Agents
作者:Goreti Ribeiro Morais、Elisa Palma、Fernanda Marques、Lurdes Gano、Maria Cristina Oliveira、Antero Abrunhosa、Hugo Vicente Miranda、Tiago F. Outeiro、Isabel Santos、Antonio Paulo
DOI:10.1002/jhet.2575
日期:2017.1
Here, we describe the synthesis and preliminary biological evaluation of novel N‐unsubstituted and N‐methylated 2‐aryl benzimidazole derivatives that contain fluorinated or hydroxylated alkyl substituents in the 4‐N‐aryl position and different substitution patterns (H vs Br vs I) in the benzimidazole ring. For the selected compounds and for comparison purposes, the congener benzothiazoles were also
Half-curcumin analogues as PET imaging probes for amyloid beta species
作者:Jian Yang、Ran Cheng、Hualong Fu、Jing Yang、Mohanraja Kumar、Jie Lu、Yungen Xu、Steven H. Liang、Mengchao Cui、Chongzhao Ran
DOI:10.1039/c8cc10166c
日期:——
In this report, we demonstrate that half-curcuminoid could be a better scaffold for PET tracer development.
在这份报告中,我们展示了半姜黄素可能是PET示踪剂开发的更好支架。
A tunable detection range of ion-selective nano-optodes by controlling solvatochromic dye transducer lipophilicity
作者:Lu Wang、Eric Bakker
DOI:10.1039/c9cc06729a
日期:——
solvatochromic dye (SD) transducers for use in ion-selective emulsified optical sensors are introduced and characterized. They share the same chromophore group, (E)-4-(4-(dimethylamino)styryl)pyridinium, but vary in their lipophilicities by grafted alkyl or ethoxy groups. The calibration curve is found to shift by a total of 2.7 orders of magnitude with the lipophilicity of the SD.