Open AccessDual‐detection‐window fluorescence probe for ultra‐sensitive determination of Pb 2+ based on emission‐tunable B and N co‐doped carbon dots
Author(s) -
Cheng Qiao,
He Yu,
Ge Yili,
Song Gongwu
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0779
Subject(s) - detection limit , fluorescence , materials science , carbon fibers , analytical chemistry (journal) , emission intensity , boron , luminescence , doping , optoelectronics , chemistry , optics , physics , chromatography , organic chemistry , composite number , composite material
In this work, 3‐aminophenylboronic acid was used as the starting materials to construct boron and nitrogen co‐doped carbon dots with tunable dual‐emission intensity at 420 and 540 nm with different excitation at 360 and 500 nm, respectively. The dual‐emission carbon dots sensor is employed for rapid and sensitive fluorescence‐enhancing detection of Pb 2+ . Compared with previous reported methods, their method showed better linear ranges or detection limits. Under the optimal conditions, the limit of detection of 0.9 nM for Pb 2+ was reached with a wide range of 9 nM to 438 μM. The authors believe that the established method has more opportunities for application for other environmental targets.