数字农科院2.0

A novel pyrazoline-based fluorescence probe armed by pyrene and naphthol system for the selective detection of Cu2+ and its biological application

文献类型： 外文期刊

作者： Yang, Yun-Shang;Cao, Jing-Qi;Ma, Chun-Mei;Zhang, Ying-Peng;Guo, Hui-Chen;Xue, Ji-Jun

作者机构：

关键词： Pyrazoline;Fluorescent chemosensor;Copper ions;DFT calculation;Cell imaging

期刊名称： JOURNAL OF THE IRANIAN CHEMICAL SOCIETY

ISSN： 1735-207X

年卷期： 2022 年

页码：

收录情况： SCIE（2022版）

摘要： A photo-induced electron transfer cationic fluorescence probe L-1 based on pyrene-naphthol system was designed to detect the change of Cu2+ with fluorescence. The probe L-1 was found to selectively recognize Cu2+ in aqueous ethanol solution [10.0 mmol/L HEPES, pH 7.4, EtOH-H2O = 1:1 (v/v)] without interference from other coexisting metal ions. The response of the sensor to Cu2+ is transient and reversible, and anions generally have no impact on the selectivity of Cu2+. Probe L-1 forms complex with Cu2+ in 1:1 ratio as supported by Job's plot analysis. The binding constants of Cu2+ was calculated to be 6.322 x 10(4) L/mol using a nonlinear curve-fitting method. The detection limit of Cu2+ was determined to be 1.620 x 10(-7) mol/L. The energy gap between HOMO and LUMO in L-1 and L-1-Cu2+ was calculated by density functional theory as 3.76 eV and 2.71 eV, respectively. In addition, the probe L-1 has extremely low cytotoxicity and can be used for living cell imaging studies.

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