Affiliation:
1. Department of Chemistry, Chemical Engineering and Resource Utilization Northeast Forestry University 26 Hexing Road Harbin 150040 P. R. China
Abstract
Fluorescent nitrogen‐doped carbon dots (N‐CDs) are obtained by a straightforward hydrothermal method, and tartaric acid and L‐histidine hydrochloride are used as precursors. The obtained N‐CDs exhibit nanoscale structure, good water solubility, photostability, and excellent fluorescence (FL) properties with a high FL quantum yield of 19%. The designed N‐CDs are used as fluorescent probes for detecting Fe3+ with the FL “on‐off” strategy. Two good linear relationships can be observed for the concentration of Fe3+ from 0 to 80 μm and from 80 to 600 μm, and the calculated detection limit for Fe3+ is 0.88 μm (3σ/slope). Moreover, the N‐CDs‐based FL probe can also be used for detecting Fe3+ in tap water and possesses great potential application in the field of anti‐fake information encryption.
Funder
Natural Science Foundation of Heilongjiang Province
Subject
Materials Chemistry,Electrical and Electronic Engineering,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics,Electronic, Optical and Magnetic Materials