"Turn on/off" proton transfer based fluorescent sensor for selective detection of environmentally hazardous metal ions (Zn2+, Pb2+) in aqueous media

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154389" target="_blank" >RIV/61989592:15310/15:33154389 - isvavai.cz</a>
Result on the web
<a href="http://ac.els-cdn.com/S002223131500191X/1-s2.0-S002223131500191X-main.pdf?_tid=dbe781b2-56c0-11e5-b22f-00000aacb362&acdnat=1441782382_c14a253f91cdb47eac6374084692942c" target="_blank" >http://ac.els-cdn.com/S002223131500191X/1-s2.0-S002223131500191X-main.pdf?_tid=dbe781b2-56c0-11e5-b22f-00000aacb362&acdnat=1441782382_c14a253f91cdb47eac6374084692942c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jlumin.2015.04.007" target="_blank" >10.1016/j.jlumin.2015.04.007</a>

Result language
angličtina
Original language name
"Turn on/off" proton transfer based fluorescent sensor for selective detection of environmentally hazardous metal ions (Zn2+, Pb2+) in aqueous media
Original language description
Sensing ability of fluorescence based chemosensor: Indole-7-carboxaldehyde (I7C) for environmentally hazardous metal ions (Xn+ = Zn2+, Pb2+, CO2+, Ni2+, Cu2+, Cd2+, Cr3+, and Fe3+) has been investigated. Based on excited state proton transfer (ESPT) phenomenon, the sensing capability of I7C is verified experimentally (UV-vis, FTIR, NMR) and theoretically (DFL TD-DFT) in aqueous media. Chemical hardness (eta), electrophilicity (omega) and electronic chemical potentials (mu) confirm the selective reactivity of I7C (N-c and N-t conformers) in the presence of metal ions by the formation of (1:1) metal ion: I7C complex (M-x, M-x*). M-x, M-x* are found to display excellent sensing capability for Zn2+ and Pb2+ ions. "Turn-On" response for Zn2+ is observed through the appearance of a new enhanced fluorescence at similar to 430 nm. By strong blue emission I7C establishes its strong candidature as "blue emitter". "Turn-Off" response is observed for Pb2+ through the quenching of the existing fluo
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
<a href="/en/project/EE2.3.20.0017" target="_blank" >EE2.3.20.0017: Research team development of the Regional Centre of Advanced Technologies and Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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