A double Schiff base T as acceptor for metal ions derived from thiophene-2,5-dicarboxylic acid was designed and synthesized, and showed a high selectivity for In3+ in a DMF/H2O buffer solution.
Synthesis and Optoelectronic Properties of Symmetrical Thiophene Based 2,5-disubstiuted 1,3,4-oxadiazoles: Highly Fluorescent Materials for OLED Applications
作者:Shridhar I. Panchamukhi、Ningaraddi Belavagi、Mohammed Hussain Rabinal、Imitiyaz Ahmed Khazi
DOI:10.1007/s10895-011-0838-y
日期:2011.7
carried out on these compounds and found that they exhibit good fluorescent properties with high quantum yield. Symmetrical 2,5-disubstituted thiophene derivatives containing the 1,3,4-oxadiazole moiety were synthesized from the corresponding thiophene 2,5-dicarboxylic acid. The Photophysical and electrochemical properties revealed that these compounds are good fluorescent materials with high quantum
AMIDE COMPOUND AND THROMBOPOIETIN RECEPTOR ACTIVATOR
申请人:Miyaji Katsuaki
公开号:US20090131659A1
公开(公告)日:2009-05-21
The present invention provides compounds useful for prevention, treatment or alleviation of diseases against which activation of the thrombopoietin receptor is effective.
A compound represented by the formula (1):
wherein A, B, R
1
, L
1
, R
2
, L
2
, L
3
, Y, L
4
, R
3
and X are the same as defined in the description, a tautomer, prodrug or pharmaceutically acceptable salt of the compound or a solvate thereof.
need for pretreatment of the tested solution, which was currently an excellent fluorescence platform for the detection of phytate ions. The recognition process of target ions was explained in detail through spectral measurement and MS spectrum titration. Furthermore, the theoretical calculations were performed to provide reasonable evidence for excellent behavior of sensors. Moreover, the quantitative
本研究设计并合成了基于噻吩的小分子传感器R和Q ,它们可以根据“关-开-关”荧光依次监测水溶液中的Zn 2+和植酸根离子。与其他报道的传感器相比,这两种传感器都表现出对目标离子的超灵敏响应,尤其是对植酸盐离子的响应,具有低检测限 (3.04 × 10 -10 M ) 和快速检测速率 (<10 s)。更重要的是,乙二氧基修饰的复合物Q -Zn 2+对植酸根离子的选择性高于 PPi 和 PO 4 3−,无需对被测溶液进行预处理,是目前检测植酸根离子的优良荧光平台。通过光谱测量和质谱滴定详细说明了目标离子的识别过程。此外,还进行了理论计算,为传感器的出色性能提供了合理的证据。此外,对水样中Zn 2+和植酸根离子的定量检测有力地支持了这两种传感器的应用潜力。
Controlling Ion-Sensing Specificity of <i>N</i>-Amidothioureas: From Anion-Selective Sensors to Highly Zn<sup>2+</sup>-Selective Sensors by Tuning Electronic Effects
作者:Hua-Long Chen、Zhi-Fo Guo、Zhong-lin Lu
DOI:10.1021/ol302313x
日期:2012.10.5
N-Amidothioureas bearing nitro groups showed different sensitivities to various anions, while those with methoxy moieties exhibited the sensitive and selective fluorescence turn-on property for Zn2+ in aqueous solution and in cells. N-Amidothioureas can therefore be adjusted from anion-selective sensors to Zn2+-selective sensors by varying the electronic effects of their substituents.