Ionophore-Based Potassium Selective Fluorescent Organosilica Nano-Optodes Containing Covalently Attached Solvatochromic Dyes

Zhang，Yupu1; Du，Xinfeng2; Xie，Xiaojiang1

2022

10.3390/chemosensors10010023

CHEMOSENSORS   影响因子和分区

2227-9040

Fluorescent nanoprobes containing ionophores and solvatochromic dyes (SDs) were previously reported as an alternative to chromoionophore-based nano-optodes. However, the small-molecular SDs are prone to leakage and sequestration in complex samples. Here, we chemically attached the SDs to the surface of organosilica nanospheres through copper-catalyzed Click chemistry to prevent dye leakage. The nano-optodes remained well responsive to K+ even after exposure to a large amount of cation-exchange resin, which acted as a sink of the SDs. The potassium nanoprobes exhibited a dynamic range between 1 mu M to 10 mM and a good selectivity thanks to valinomycin. Preliminary sensing device based on a nylon filter paper and agarose hydrogel was demonstrated. The results indicate that the covalent anchoring of SDs on nanospheres is promising for developing ionophore-based nanoprobes.

ionophores nanoprobes potassium ion-selective fluorescence nanosensors

SCI

英语

第一 ; 通讯

Shenzhen Municipal Science and Technology Innovation Council[JCYJ20180504165819965]

Chemistry ; Electrochemistry ; Instruments & Instrumentation

Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation

WOS:000917714700001

MDPI

Web of Science

1.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin,150001,China

Zhang，Yupu,Du，Xinfeng,Xie，Xiaojiang. Ionophore-Based Potassium Selective Fluorescent Organosilica Nano-Optodes Containing Covalently Attached Solvatochromic Dyes[J]. CHEMOSENSORS,2022,10(1).

Zhang，Yupu,Du，Xinfeng,&Xie，Xiaojiang.(2022).Ionophore-Based Potassium Selective Fluorescent Organosilica Nano-Optodes Containing Covalently Attached Solvatochromic Dyes.CHEMOSENSORS,10(1).

Zhang，Yupu,et al."Ionophore-Based Potassium Selective Fluorescent Organosilica Nano-Optodes Containing Covalently Attached Solvatochromic Dyes".CHEMOSENSORS 10.1(2022).