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Multifunctional rhodamine B appended ROMP derived fluorescent probe detects Al3+ and selectively labels lysosomes in live cells.


ABSTRACT: There a few reports of rhodamine-based fluorescent sensors for selective detection of only Al3+, due to the challenge of identifying a suitable ligand for binding Al3+ ion. The use of fluorophore moieties appended to a polymer backbone for sensing applications is far from mature. Here, we report a new fluorescent probe/monomer 4 and its ROMP derived polymer P for specific detection of Al3+ ions. Both monomer 4 and its polymer P exhibit high selectivity toward only Al3+ with no interference from other metal ions, having a limit detection of 0.5 and 2.1 µM, respectively. The reversible recognition of monomer 4 and P for Al3+ was also proved in presence of Na2EDTA by both UV-Vis and fluorometric titration. The experimental data indicates the behavior of 4 and P toward Al3+ is pH independent in medium conditions. In addition, the switch-on luminescence response of 4 at acidic pH (0?

SUBMITTER: Gandra UR 

PROVIDER: S-EPMC7658199 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Multifunctional rhodamine B appended ROMP derived fluorescent probe detects Al<sup>3+</sup> and selectively labels lysosomes in live cells.

Gandra Upendar Reddy UR   Courjaret Raphael R   Machaca Khaled K   Al-Hashimi Mohammed M   Bazzi Hassan S HS  

Scientific reports 20201111 1


There a few reports of rhodamine-based fluorescent sensors for selective detection of only Al<sup>3+</sup>, due to the challenge of identifying a suitable ligand for binding Al<sup>3+</sup> ion. The use of fluorophore moieties appended to a polymer backbone for sensing applications is far from mature. Here, we report a new fluorescent probe/monomer 4 and its ROMP derived polymer P for specific detection of Al<sup>3+</sup> ions. Both monomer 4 and its polymer P exhibit high selectivity toward onl  ...[more]

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