A chromene pyrazoline derivatives fluorescent probe for Zn 2+ detection in aqueous solution and living cells
| Autor: | Yun-Shang Yang, Jiaxi Ru, Ying-Peng Zhang, Qing-Hua Xue, Xiao-Yu Liu, Chun-Mei Ma, Huichen Guo |
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| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Detection limit Aqueous solution 010405 organic chemistry Chemistry 010402 general chemistry Photochemistry 01 natural sciences Fluorescence Photoinduced electron transfer 0104 chemical sciences Inorganic Chemistry Live cell imaging Materials Chemistry Titration Physical and Theoretical Chemistry Selectivity Stoichiometry |
| Zdroj: | Inorganica Chimica Acta. 479:128-134 |
| ISSN: | 0020-1693 |
| Popis: | A new chromene pyrazoline derivatives fluorescent probe L was designed and synthesized. The probe L appears in a 55-fold fluorescence enhancement after 5 equiv. Zn2+ was added, and it also exhibits high sensitivity and selectivity for response to Zn2+ in ethanol-water (V:V = 1:1) solution through “OFF-ON” type process and a possible photoinduced electron transfer (PET). Notably, the probe L distinguishes between Zn2+ and Cd2+. The association constant was considered as 2.38 × 103 M−1 via fluorescence titration experiments. The probe L-Zn2+ complex forms a 1:1 binding stoichiometry which was discussed by Job’s plot. The probe is very highly sensitive with fluorometric detection limit of 1.603 × 10−10 M. It also shows good reversibility upon addition of EDTA. Furthermore, the viability of L to Zn2+ has practical application in live cell imaging. |
| Databáze: | OpenAIRE |
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