A squaraine-based near IR fluorescent chemosensor for calcium

Date

1997-06-23

Author

Akkaya, Engin U.
Türkyılmaz, Serhan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

98
views

0
downloads

A red to NIR emitting, highly Ca2+-specific fluorescent chemosensor has been synthesized. In pH 7.2 aqueous buffers, the chemosensor signals Ca2+ by a decrease in emission intensity, whereas large excess of Mg2+ ions have no effect on either the absorption or the emission spectrum. The chemosensor is likely to be the prototype of a new generation of laser-diode excitable fluorescent chemosensors for Calcium. (C) 1997 Elsevier Science Ltd.

Subject Keywords

Indicators, Dyes, Electrophotography, Generation

URI

https://hdl.handle.net/11511/39346

Journal

Tetrahedron Letters

DOI

https://doi.org/10.1016/s0040-4039(97)00917-9

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

One-pot synthesis of a red-fluorescent chemosensor from an azacrown, phloroglucinol and squaric acid: A simple in-solution construction of a functional molecular device. Oguz, U; Akkaya, EU (1997-06-23) A long wavelength fluorescent, squaraine-based chemosensor has been synthesized in one step from commercially available precursors. The resulting squaraine derivative absorbs maximally at 635 nm (epsilon = 260,000) and the emission peak is at 665 nm. This azacrown-appended squaraine signals alkaline and earth-alkaline metal ions in millimolar concentrations in acetonitrile. (C) 1997 Elsevier Science Ltd.
An amperometric acetylcholine biosensor based on a conducting polymer Kanik, Fulya Ekiz; Kolb, Marit; TİMUR, SUNA; Bahadir, Muefit; Toppare, Levent Kamil (Elsevier BV, 2013-08-01) An amperometric acetylcholine biosensor was prepared by the generation of the conducting polymer poly(4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzenamine) (poly(SNS-NH2)) on graphite electrodes. For pesticide detection, the enzymes acetylcholinesterase (AChE) and choline oxidase (ChO) were co-immobilized onto the conducting polymer poly(SNS-NH2) films using covalent binding technique. Electrochemical polymerization was carried out using a three-electrode cell configuration via cyclic voltammetry. Characteri...
A Diverse-Stimuli Responsive Chemiluminescent Probe with Luminol Scaffold and Its Electropolymerization Asil Alptekin, Demet; Algi, Fatih; Önal, Ahmet Muhtar (Wiley, 2010-10-01) A diverse-stimuli responsive chemiluminescent system, SNS-Lum, and its electropolymerization to give PSNS-Lum, which is the first example of conjugated polymers with pendant luminol arms inducing chemiluminescence in the presence of super oxide radical anion under neutral conditions, are highlighted.
A promising enzyme anchoring probe for selective ethanol sensing in beverages Soylemez, Saniye; Goker, Seza; Toppare, Levent Kamil (Elsevier BV, 2019-07-15) A newly designed amperometric biosensor for the determination of ethanol through one-step electrochemical coating of (4,7-di(thiophen-2-yl)benzo[c][1,2,5]selenadiazole-co-1H-pyrrole-3-carboxylic acid) (TBeSe-co-P3CA) on a graphite electrode is presented. It was aimed to propose a newly synthesized copolymer with enhanced biosensing properties as a novel sensor for the quantification of ethanol. The conjugated copolymer (TBeSe-co-P3CA) was prepared through electrochemical polymerization by potential cycling....
Novel squaraine signalling Zn(II) ions: three-state fluorescence response to a single input Dilek, G; Akkaya, EU (2000-05-06) A novel metal ion sensitive 2,3,3-trimethyl-3H-indole-derived squaraine dye showing different fluorescence responses depending on the complexation stoichiometry has been synthesized. Thus, three levels of signals are attainable by varying the Zn(II) ion concentration.

Citation Formats

E. U. Akkaya and S. Türkyılmaz, “A squaraine-based near IR fluorescent chemosensor for calcium,” Tetrahedron Letters, pp. 4513–4516, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39346.