Metal-Cation Recognition in Water by a Tetrapyrazinoporphyrazine-Based Tweezer Receptor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F16%3A00458228" target="_blank" >RIV/61388980:_____/16:00458228 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11160/16:10326170

Result on the web

<a href="http://dx.doi.org/10.1002/chem.201504268" target="_blank" >http://dx.doi.org/10.1002/chem.201504268</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/chem.201504268" target="_blank" >10.1002/chem.201504268</a>

Result language

angličtina

Original language name

Metal-Cation Recognition in Water by a Tetrapyrazinoporphyrazine-Based Tweezer Receptor

Original language description

A series of zinc azaphthalocyanines with two azacrowns in a rigid tweezer arrangement were prepared and the fluorescence sensing properties were investigated. The size-driven recognition of alkali and alkaline earth metal cations was significantly enhanced by the close cooperation of the two azacrown units, in which both donor nitrogen atoms need to be involved in analyte binding to switch the sensor on. The mono- or biphasic character of the binding isotherms, together with the binding stoichiometry and magnitude of association constants (K-A), indicated specific complexation of particular analytes. Water solvation was shown to play an important role and resulted in a strong quenching of sensor fluorescence in the ON state. The lead compound was embedded into silica nanoparticles and advantageous sensing properties towards K+ were demonstrated in water ((F)=671nm, apparent K-A=82m(-1), increase of 17x), even in the presence of (supra)physiological concentrations of Na+ and Ca2+.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

—

Project

<a href="/en/project/GP14-02165P" target="_blank" >GP14-02165P: Red-emitting Fluorescence Sensors Based on Azaphthalocynine Structure: Study of Aza-Crown Recognition Moiety</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemistry - A European Journal

ISSN

0947-6539

e-ISSN

—

Volume of the periodical

22

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

2417-2426

UT code for WoS article

000369855000029

EID of the result in the Scopus database

2-s2.0-84970883647