Abstract A simple monocarbazone 1 derived from 2H-benzo[h]chromene-3-carbaldehyde and carbazide exhibited aggregation-induced ratiometric emission upon the addition of water to CH3OH solution (Δλem= 30 nm). Upon Cu2+ treatment, the fluorescence emission of 1 displayed a significant red shift in both CH3OH and H2O solutions. In addition, 1 can detect Hg2+ through the fluorescence quenching in H2O solution. The response mechanism to Cu2+ involved an intermolecular charge transfer coupled with a metal-induced assembly, whereas that to Hg2+ was probably due to a photo-induced electron transfer coupled with metal-induced assembly, which were thoroughly investigated by spectral methods and theoretical calculation. In addition, the sensor could successfully detect the corresponding ions in HeLa cells.

中文翻译：

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聚集诱导的比率发射活性单碳腙：Cu 2+ 在溶液或聚集状态下的比率荧光探针

摘要 由 2H-苯并[h]色烯-3-甲醛和卡巴肼衍生的简单单卡巴腙 1 在向 CH3OH 溶液中加入水后（Δλem=30 nm）表现出聚集诱导的比率发射。Cu2+ 处理后，1 的荧光发射在 CH3OH 和 H2O 溶液中都显示出明显的红移。另外，1可以通过H2O溶液中的荧光猝灭来检测Hg2+。对 Cu2+ 的响应机制涉及分子间电荷转移和金属诱导组装，而对 Hg2+ 的响应机制可能是由于光诱导电子转移和金属诱导组装，通过光谱方法和理论计算进行了深入研究。此外，该传感器可以成功检测到 HeLa 细胞中的相应离子。