Publication Date:
2020
Description:
〈p〉Publication date: 5 April 2020〈/p〉
〈p〉〈b〉Source:〈/b〉 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Volume 230〈/p〉
〈p〉Author(s): Yang Yu, Sai Xu, Yuefeng Gao, Muhan Jiang, Jinsu Zhang, Xiangping Li, Xizhen Zhang, Baojiu Chen〈/p〉
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〈h5〉Abstract〈/h5〉
〈div〉〈p〉The development of upconversion nanoparticles based logic systems, especially integrated logic systems is still a challenge until now. In this work, an upconversion nanocomposite system is developed and studied for the sensing abilities toward hydrion, hydroxyl ions, metal ions and anions (S〈sup〉2〈/sup〉〈sup〉−〈/sup〉, I〈sup〉−〈/sup〉) by taking the advantages of turn-on and turn-off upconversion fluorescence switching response. Triggering by different kinds of ions, the upconversion system can act as a fluorescence switch due to the specific recognition abilities of Rhodamine 6G functionalized PEI for specific ions and the energy transfer process from upconversion nanoparticles to recognition molecules. Based on these results, multiple molecular logic gates, including single-input logic operation (YES, NOT), double-inputs logic operation (OR, AND, NOR, INHIBIT) and multiple-input integrative logic operation (INHIBIT+OR) are developed by employing hydrion, hydroxyl ions, metal ions and anions as inputs and the changes in the upconversion fluorescence intensity as output. The multiple logic operations are of great significance for the applications in biomedicine and molecular calculation.〈/p〉〈/div〉
〈/div〉
〈div xml:lang="en"〉
〈h5〉Graphical abstract〈/h5〉
〈div〉〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S138614252030024X-ga1.jpg" width="302" alt="Unlabelled Image" title="Unlabelled Image"〉〈/figure〉〈/p〉〈/div〉
〈/div〉
Print ISSN:
1386-1425
Electronic ISSN:
1873-3557
Topics:
Chemistry and Pharmacology
,
Physics
