Condensation Product of p-anisaldehyde and L-phenylalanine: Fluorescent 'on-off' Sensor for Cu2+ and IMPLICATION Logic Gate
| Autor: | Diganta Kumar Das, Bhaswati Devi, Pradip Bhattacharyya, Smita Sarma |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Sociology and Political Science 010405 organic chemistry Chemistry Metal ions in aqueous solution Clinical Biochemistry Time-dependent density functional theory 010402 general chemistry 01 natural sciences Biochemistry Fluorescence Binding constant 0104 chemical sciences Ion Clinical Psychology Physical chemistry Law Voltammetry Spectroscopy Social Sciences (miscellaneous) Stoichiometry |
| Zdroj: | Journal of Fluorescence. 30:1513-1521 |
| ISSN: | 1573-4994 1053-0509 |
| Popis: | (Z)-2-(4-methoxybenzylideneamino)-3-phenylpropanoic acid (L) synthesized by condensation of p-anisaldehyde and L-phenylalanine acts as selective fluorescent as well as voltammetric sensor for Cu2+ in 2:1 (v/v) CH3OH:H2O. The fluorescence intensity of L (λmax 425 nm) is quenched ca. 65% by Cu2+. Metal ions - Li+, Na+, K+, Al3+, Cu2+, Zn2+, Cd2+, Hg2+, Mn2+, Ni2+ and Pb2+ do not interfere. The binding constant and the detection limits were calculated to be 0.56 × 102 M−1 and 10−6 M respectively. DFT and TDDFT calculations confirmed 2:1 binding stoichiometry between L and Cu2+ obtained from fluorescence data. The interaction between L and Cu2+ is reversible for many cycles with respect to ethylenediamine tetraacetate anion (EDTA2−) which results in IMPLICATION logic gate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink