Subphthalocyanines as fluorescence sensors for metal cations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F24%3A00581993" target="_blank" >RIV/61388980:_____/24:00581993 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11160/24:10488001

Result on the web

<a href="https://hdl.handle.net/11104/0350963" target="_blank" >https://hdl.handle.net/11104/0350963</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3dt03839d" target="_blank" >10.1039/d3dt03839d</a>

Result language

angličtina

Original language name

Subphthalocyanines as fluorescence sensors for metal cations

Original language description

Subphthalocyanines (SubPcs) and their aza-analogues (SubTPyzPzs) are fluorophores with strong orange fluorescence emission, however, their sensing ability towards metal cations remains uncharted. To fill this gap, we have developed an efficient method for introducing aza-crown moieties at the axial position of SubPcs and SubTPyzPzs to investigate the structure-activity relationship for sensing alkali (Li+, Na+, K+) and alkaline earth metal (Ca2+, Mg2+, Ba2+) cations. SubPcs showed better photostability than SubTPyzPzs and even a commonly utilized dye, 6-carboxyfluorescein. Selectivity toward metal cations was driven by the size of the aza-crown, irrespective of the counter anion. The stoichiometry of binding was found to be 1 : 1 in all cases, and the interaction between SubPcs and cations was characterized by the corresponding apparent binding constants (Ka). Notably, an unusually strong interaction of all sensoric SubPcs with Ba2+ compared to other studied cations was demonstrated. The role of the surrounding environment, i.e. the addition of water or methanol, in sensing cations is shown in detail as well. Selectivity towards K+ over Na+ was demonstrated in aqueous media with SubPcs bearing the 1-aza-6-crown-18 moiety in Tween 80 micelles. In this case, a 5-fold increase of the fluorescence quantum yield was observed upon binding K+ ions. The high brightness, photostability, and sensing activity in aqueous media make SubPc macrocycles promising fluorophores for metal cation sensing.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GC21-14919J" target="_blank" >GC21-14919J: Non-metal complexes of porphyrazinoids for design of novel perspective photosensitizers and fluorescence sensors</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Dalton Transactions

ISSN

1477-9226

e-ISSN

1477-9234

Volume of the periodical

53

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

2635-2644

UT code for WoS article

001142314500001

EID of the result in the Scopus database

2-s2.0-85182689675