A chemosensoring molecular lab for various analytes and its ability to execute a molecular logical digital comparator

Awad I Said; Nikolai I Georgiev; Shaimaa A Hamdan; Vladimir B Bojinov

doi:10.1007/s10895-019-02464-3

A chemosensoring molecular lab for various analytes and its ability to execute a molecular logical digital comparator

J Fluoresc. 2019 Nov;29(6):1431-1443. doi: 10.1007/s10895-019-02464-3. Epub 2019 Nov 23.

Authors

Awad I Said^{1

2}, Nikolai I Georgiev¹, Shaimaa A Hamdan², Vladimir B Bojinov³

Affiliations

¹ Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv., 1756, Sofia, Bulgaria.
² Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt.
³ Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Bulv., 1756, Sofia, Bulgaria. vlbojin@uctm.edu.

PMID: 31760584
DOI: 10.1007/s10895-019-02464-3

Abstract

We reported here the unique ability of a Rhodamine 6G-based probe (3) to detect discriminately several targets, including H⁺, HO^-, Cu²⁺, Hg²⁺, Fe³⁺, Co²⁺, Cd²⁺, Zn²⁺, Sn²⁺, Ni²⁺, Al³⁺, Pb²⁺, Ce³⁺and Ag⁺, by unambiguously colorimetric and fluorimetric outcomes. In aqueous solutions, the presence of proton induced the ring-opening of rhodamine moiety but the presence of hydroxide induced the conversion of 2-hydroxyphenyl hydrazone moiety from the non-fluorescent benzenoid form into the fluorescent quinoid form. The probe could to distinguish between different cations in DMF and to work like an artificial tongue at molecular level. Several logic gates including OR, INHIBIT and TRANSFER, were performed by the probe. Moreover, the probe is able to execute three INHIBIT logic gates by two inputs, which was exploited to execute a digital molecular comparator.

Keywords: Cations; Chemosensoring molecular lab; Fluorescent probe; Molecular digital comparator; Multidetection of analytes; pH.