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
Sen Liu, Jingqi Tian, Lei Wang, Yingwei Zhang, Xiaoyun Qin, Yonglan Luo, Abdullah M. Asiri, Abdulrahman O. Al‐Youbi, Xuping Sun
Abstract
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 Cu(2+) in real water samples.
Topics & Concepts
Materials scienceNanodotDetection limitPhotoluminescenceFluorescenceQuantum yieldIonHydrothermal circulationCarbon fibersFluorophorePolymerNitrogenNanotechnologyDopingParticle sizeAnalytical Chemistry (journal)Chemical engineeringOptoelectronicsChromatographyOrganic chemistryOpticsChemistryComposite materialEngineeringComposite numberPhysicsCarbon and Quantum Dots ApplicationsConducting polymers and applicationsLuminescence and Fluorescent Materials