TY - JOUR
T1 - Study on ultrasonic single-step synthesis and optical properties of nitrogen-doped carbon fluorescent quantum dots
AU - Wang, Fanghui
AU - Wang, Shanshan
AU - Sun, Zhaonan
AU - Zhu, Hong
N1 - Publisher Copyright:
Copyright © Taylor & Francis Group, LLC.
PY - 2015/9/2
Y1 - 2015/9/2
N2 - Nitrogen doped carbon fluorescent quantum dots (NDCFDs) with downconversion fluorescent and upconversion fluorescence properties were prepared by an ultrasonic one-step process. The raw materials and reagents were inexpensive and easy to obtain. The effect of ultrasonic time and reaction temperature on the fluorescent quantum yield and particle size was study. Optimal preparation conditions of NDCFDs with the highest fluorescence quantum yield were achieved by employing a reaction time of 14 h at 50°C. NDFCDs were characterized by TEM, FTIR, Raman spectroscopy, XPS, UV spectrophotometer, and fluorescence spectrometer. The results showed that the surface of NDCFDs were rich in hydroxyl, carbonyl hydrophilic group, etc. The DNCFDs not only had downconversion fluorescent, but also had good upconversion fluorescence. The effect of concentration and type of solution on the fluorescence properties of NDCFDs was studied. The formation mechanism, fluorescence emission mechanism and self-assembly behavior of NDCFDs were also investigated.
AB - Nitrogen doped carbon fluorescent quantum dots (NDCFDs) with downconversion fluorescent and upconversion fluorescence properties were prepared by an ultrasonic one-step process. The raw materials and reagents were inexpensive and easy to obtain. The effect of ultrasonic time and reaction temperature on the fluorescent quantum yield and particle size was study. Optimal preparation conditions of NDCFDs with the highest fluorescence quantum yield were achieved by employing a reaction time of 14 h at 50°C. NDFCDs were characterized by TEM, FTIR, Raman spectroscopy, XPS, UV spectrophotometer, and fluorescence spectrometer. The results showed that the surface of NDCFDs were rich in hydroxyl, carbonyl hydrophilic group, etc. The DNCFDs not only had downconversion fluorescent, but also had good upconversion fluorescence. The effect of concentration and type of solution on the fluorescence properties of NDCFDs was studied. The formation mechanism, fluorescence emission mechanism and self-assembly behavior of NDCFDs were also investigated.
KW - Fluorescence emission mechanism
KW - Fluorescence properties
KW - Formation mechanism
KW - Nitrogen doped carbon fluorescent quantum dots
KW - Self-assembly behavior
KW - Ultrasonic single-step
UR - http://www.scopus.com/inward/record.url?scp=84929579851&partnerID=8YFLogxK
U2 - 10.1080/1536383X.2014.996287
DO - 10.1080/1536383X.2014.996287
M3 - Article
AN - SCOPUS:84929579851
SN - 1536-383X
VL - 23
SP - 769
EP - 776
JO - Fullerenes Nanotubes and Carbon Nanostructures
JF - Fullerenes Nanotubes and Carbon Nanostructures
IS - 9
ER -