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- W4285498426 abstract "π-Conjugated polyfluorenes bearing 6- N 1 -cytosinehexyl and hexaethylene glycol monomethyl ether side chains ( polymer-1 ) and 3- N 1 -cytosinepropyl and 3- N , N , N -trimethylammoniumpropyl bromide side chains ( polymer-2 ) were synthesized via the Suzuki-Miyaura coupling reactions. GPC measurements suggested that the M n values of polymers 1 and 2 were 22,900 and 8,510, whereas their M w values were 32,100 and 8,740, respectively. The metal-ion sensing behaviors of the polymers for Na + , Cu + , Cu 2+ , Fe 3+ , Pd 2+ , and Ag + , in an organic solvent and water were investigated by monitoring the decrease in the photoluminescence (PL) intensity upon the addition of a metal ion. The sensing performance of polymers depends on the polymer structure. Polymer-1 could detect Cu + , Cu 2+ , and Pd 2+ at the micro-molar level. The Benesi–Hildebrand method using PL quenching data was available to investigate the association behavior between the cytosine groups of the polymers and metal salts. The mechanism of PL quenching with polymer metal complexation was also discussed. • A Polyfluorene bearing N 1 -alkylcytosine and oligoether side chains was obtained. • The metal complexes of the polymer interacted with oligoether side chain. • Polymer photoluminescence was decreased upon the addition of metal ions. • The polymer acted as a highly sensitive sensor for metal salts." @default.
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- W4285498426 date "2022-08-01" @default.
- W4285498426 modified "2023-09-27" @default.
- W4285498426 title "Sensing performance of metal-ion sensors based on polyfluorenes bearing N1-Alkylcytosine, oligoether, and alkylammonium side chains" @default.
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- W4285498426 doi "https://doi.org/10.1016/j.polymer.2022.125157" @default.
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