Hydrothermal Treatment of Grass: A Low-Cost, Green Route to Nitrogen-Doped, Carbon-Rich, Photoluminescent Polymer Nanodots as an Effective Fluorescent Sensing Platform for Label-Free Detection of Cu(II) Ions

• Published in: Advanced materials (Weinheim) Vol. 24; no. 15; pp. 2037 - 2041
• Main Authors: Liu, Sen, Tian, Jingqi, Wang, Lei, Zhang, Yingwei, Qin, Xiaoyun, Luo, Yonglan, Asiri, Abdullah M., Al-Youbi, Abdulrahman O., Sun, Xuping
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 17.04.2012; WILEY‐VCH Verlag
• Subjects: Carbon - chemistry; Copper - analysis; Copper - chemistry; Detection; grass; Grasses; Green Chemistry Technology - economics; Green Chemistry Technology - methods; Hydrothermal treatment; ion detection; Materials selection; Nanoparticles - chemistry; Nanostructure; Nitrogen - chemistry; nitrogen-doped; Particle size; Photoluminescence; photoluminescent; Platforms; Poaceae - chemistry; polymer nanodots; Polymers - chemistry; Solubility; Spectrometry, Fluorescence; Temperature; Water - chemistry
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201200164

Increasing reaction temperature produces photoluminescent polymer nanodots (PPNDs) with decreased particle size and increased quantum yield. Such PPNDs are used as an effective fluorescent sensing platform for label‐free sensitive and selective detection of Cu(II) ions with a detection limit as low as 1 nM. This method is successfully applied to determine Cu2+ in real water samples.