Sadhu Vibhuti Atulbhai, Jha Sanjay, Park Tae Jung, Kailasa Suresh Kumar
Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, 395 007, Surat, Gujarat, India.
ASPEE Shakilam Biotechnology Institute, Navsari Agricultural University, 39500, Surat, Gujarat, India.
J Fluoresc. 2025 Feb;35(2):855-865. doi: 10.1007/s10895-023-03578-5. Epub 2024 Jan 8.
In this work, Cassia tora (C. tora) have been used as a template to synthesize green fluorescent C. tora molybdenum nanoclusters (C. tora-MoNCs) through a green chemistry approach. These C. tora-MoNCs showed a quantum yield (QY) of 7.72% and exhibited a significant emission peak at 498 nm when excited at 380 nm. The as-prepared C. tora-MoNCs had an average size of 3.48 ± 0.80 nm and showed different surface functionality. The as-synthesized C. tora-MoNCs were successfully identified the hydroxyl radical (OH) via a fluorescence quenching mechanism. Also, fluorescence lifetime and Stern-Volmer proved that after the addition of OH radicals it was quenched the fluorescence intensity via a static quenching mechanism. The limit of detection is 9.13 nM, and this approach was successfully utilized for sensing OH radicals in water samples with a good recovery rate.
在这项工作中，决明子被用作模板，通过绿色化学方法合成了绿色荧光的决明子钼纳米团簇（C. tora-MoNCs）。这些C. tora-MoNCs的量子产率（QY）为7.72%，在380 nm激发时，在498 nm处呈现出显著的发射峰。所制备的C. tora-MoNCs平均尺寸为3.48±0.80 nm，并表现出不同的表面功能。合成的C. tora-MoNCs通过荧光猝灭机制成功识别了羟基自由基（OH）。此外，荧光寿命和斯特恩-沃尔默证明，添加OH自由基后，它通过静态猝灭机制猝灭了荧光强度。检测限为9.13 nM，该方法成功用于检测水样中的OH自由基，回收率良好。
