Fluorescence Ratiometry of Monomer/Excimer Emissions in a Space-Through PET System
作者:Suh Hyun Lee、Su Ho Kim、Sung Kuk Kim、Jong Hwa Jung、Jong Seung Kim
DOI:10.1021/jo051302s
日期:2005.11.1
is added to 1 or 2, their pyrene monomeremission is enhanced with their excimeremission quenched, which is due to conformational changes of the facing carbonyl groups as well as to the participation of the ethyleneamine into the three-dimensional Pb2+ ion encapsulation. In contrast, upon addition of alkali metal ions to the 1 and 2, both monomer and excimeremissions are observed to increase, which
Synthesis of new anthracene‐substituted calix[4]triazacrown‐5 as highly sensitive fluorescent chemosensor and extractant against hazardous dichromate anion
作者:Serkan Sayin
DOI:10.1002/bio.4113
日期:2021.11
When hazardous dichromate anion was introduced into medium, the fluorescence intensity of Ant-AzClx was markedly quenched. The binding constant, stoichiometry, the detection limits and Stern–Volmer equation for the complex formed between Ant-AzClx and Cr2O72− ion were determined. Furthermore, the 1H-NMR technique was also performed to assess the mechanism of the complex (Ant-AzClx@Cr2O72−). Apart
使用简单的席夫碱反应成功合成了一种新的荧光蒽功能化杯[4]triazacrown-5 ( Ant-AzClx )。进行了1 H-NMR、13 C-NMR、ESI-MS 和元素分析技术来表征其结构。在 370 nm 处激发,Ant-AzClx在 418 nm 处显示准分子发射。因此,针对F -、HCO 3 -、H 2 PO 4 -、NO 3 -、Cr 2 O 7 2-和SO 4 2-研究了其阴离子结合特性。离子。当危险的重铬酸盐阴离子被引入培养基时,Ant-AzClx的荧光强度被显着淬灭。确定了Ant-AzClx和 Cr 2 O 7 2−离子之间形成的复合物的结合常数、化学计量、检测限和 Stern-Volmer 方程。此外,还进行了1 H-NMR 技术以评估复合物(Ant-AzClx@Cr 2 O 7 2-)的机制。除了对 Cr 2 O 7 2−离子进行选择性和灵敏识别的优异荧光化学传感器
A reversible calix[4]arene armed phenolphthalein based fluorescent probe for the detection of Zn<sup>2+</sup>
and an application in living cells
作者:Serkan Erdemir、Sait Malkondu、Ozcan Kocyigit
DOI:10.1002/bio.3585
日期:2019.2
A reversible and easy assembled fluorescentsensor based on calix[4]arene and phenolphthalein (C4P) was developed for selective zinc ion (Zn2+ ) sensing in aqueous samples. The probe C4P demonstrated high selective and sensitive detection towards Zn2+ over other competitive metalions. Interaction of Zn2+ with a solution of C4P resulted in a considerable increment in emission intensity at 440 nm (λex
A new Hg2+-selective fluorescent sensor based on a dansyl amide-armed calix[4]-aza-crown
作者:Qi-Yin Chen、Chuan-Feng Chen
DOI:10.1016/j.tetlet.2004.10.169
日期:2005.1
A new fluorescent chemosensor for Hg2+ based on a dansyl amide-armed calix[4]-aza-crown was reported. It exhibits high sensitivity and selectivity toward Hg2+ over a wide range of metal ions in MeCN-H2O (4:1, v/v). The association constant of the 1:1 complex formation for 2-Hg2+ was calculated to be 1.31 x 10(5) M-1, and the detection limit for Hg3+ was found to be 4.1 X 10(-6) mol L-1. (C) 2004 Elsevier Ltd. All rights reserved.
Calixarene modified montmorillonite: a novel design for biosensing applications
作者:Burak Sonmez、Serkan Sayin、Esra Evrim Yalcinkaya、Didem Ag Seleci、Huseyin Bekir Yildiz、Dilek Odaci Demirkol、Suna Timur
DOI:10.1039/c4ra11818a
日期:——
Here we report the synthesis, characterization and application of calixarene (Calix) modified montmorillonite (Mt) as a platform for bio-applications such as biomolecule immobilization and biosensing technologies.