The role of the size of aza-crown recognition moiety in azaphthalocyanine fluorescence sensors for alkali and alkaline earth metal cations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11160%2F15%3A10297684" target="_blank" >RIV/00216208:11160/15:10297684 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0143720815001916" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0143720815001916</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.dyepig.2015.05.020" target="_blank" >10.1016/j.dyepig.2015.05.020</a>

Result language
angličtina
Original language name
The role of the size of aza-crown recognition moiety in azaphthalocyanine fluorescence sensors for alkali and alkaline earth metal cations
Original language description
A series of fluorescence sensors bearing one 1-aza-12-crown-4, 1-aza-15-crown-5, 1-aza-18-crown-6 or 1-aza-21-crown-7 as a recognition moiety and an aza-analogue of phthalocyanine as a fluorophore was prepared. All compounds absorbed and emitted light inthe red region. Sensing properties based on intramolecular charge transfer were studied via absorption and fluorescence titration experiments with alkali metal cations and alkaline earth metal cations. Important relationships between aza-crown size andbinding affinity were observed in the group of alkali metal cations. Affinity for lithium decreased in series from the smallest crown to the largest, 1-aza-15-crown-5 bound sodium and potassium similarly, and 1-aza-18-crown-6 had the highest affinity topotassium. Alkaline earth metal cations were bound more tightly, which was obvious from more pronounced changes in the absorption spectra, and from the higher increase of fluorescence upon cation addition. A limited size preference was ob
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
CC - Organic 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
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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