Dare, Enock O. and Akinhanmi, Temilade F. and Aremu, J. A. and Adetunji, Olayide R. and Bamgbose, Janet T. and Vendrell-Criado, Victoria and Jimenez, M. Consuelo and Perez-Ruiz, Raul and Bonardd, Sebastian and Diaz, David Diaz (2023) Dual-mode colorimetric/fluorescent chemosensor for Cu2+/Zn2+ and fingerprint imaging based on rhodamine ethylenediamine bis(triazolyl silsesquioxane). PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 22 (7). pp. 1527-1541. ISSN 1474-905X, 1474-9092
Full text not available from this repository. (Request a copy)Abstract
A novel dual functional and visual rhodamine ethylenediamine bis(triazolyl silsesquioxane) (RBS) chemosensor was successfully synthesized using "click " chemistry. The results have unambiguously demonstrated that RBS can act in fluorescent and colorimetric sensing of Cu2+ and Zn2+ by their respective coordination with triazole structures and, more importantly, it has also been found that triazole-amide of RBS could turn on chelation-enhanced fluorescence (CHEF) of Cu2+. Remarkably, the addition of Cu2+ triggered an enhanced fluorescent emission by 63.3-fold (phi(F) = 0.41), while Zn2+ enhanced it 48.3-fold (phi(F) = 0.29) relative to the original RBS (phi(F) = 0.006) in acetonitrile (MeCN) solvent. The fluorescent limit of detection for Cu2+ and Zn2+ is similar and fall within 3.0 nM, while under colorimetric sensing the responses were 2.14 x 10(-8) and 4.0 x 10(-8) mol L-1, respectively. Moreover, the effective sensing profile of RBS and extended applications of RBS-Cu2+ and RBS-Zn2+ for fingerprinting detection and imaging were observed with adequate sensitivity, stability and legibility under the dual visual responses.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FLUORESCENT CHEMOSENSOR; CU2+; DESIGN; SENSOR; CELL; PROBES; Rhodamine; Silsesquioxane; Chemosensor; Fingerprint imaging |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. David Díaz Díaz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Mar 2024 15:58 |
| Last Modified: | 16 Mar 2024 15:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60295 |
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