Polymer Dots of Peryleneimide-Functionalized Polyethyleneimine: Facile Synthesis and Effective Fluorescent Sensing of Iron (III) Ions.
A simple and low-cost method is reported here for synthesizing polymer dots (PDs) using branched polyethyleneimine and peryleneimide derivatives as precursors heated in dimethylacetamide. The as-prepared PDs can be well-dispersed in water and show excitation-dependent fluorescence, stable fluorescence over a wide range (pH = 5.0 - 9.0), and high photostability. It is demonstrated that the prepared PDs can be used as a novel fluorescent sensing platform for sensitive and selective detection of Fe (III) ions. The fluorescent PDs may be applied to promising applications in chemical sensors for metal ions, as well as biological imaging or biological labeling for their excellent fluorescence properties.
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Qing
Q
Zhang
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Bo
B
Wu
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Dan
D
Zhong
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.
Xiaowei
X
Zhan
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Guojie
G
Wang
D005453:Fluorescence; D007501:Iron / Q000737:chemistry*; D011094:Polyethyleneimine / Q000138:chemical synthesis / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry*
D011094:Polyethyleneimine; D007501:Iron
fluorescence; hyperbranched; nanotechnology; sensors