One step, high yield synthesis of amphiphilic carbon quantum dots derived from chia seeds: a solvatochromic study

2017 ◽  
Vol 41 (21) ◽  
pp. 13130-13139 ◽  
Author(s):  
S. Solomon Jones ◽  
Parikshit Sahatiya ◽  
Sushmee Badhulika
Keyword(s):  
Quantum Dots ◽  
Thermal Treatment ◽  
Low Cost ◽  
Carbon Quantum Dots ◽  
High Yield ◽  
Renewable Biomass ◽  
One Step

In this work, we demonstrate the high-yield synthesis of carbon quantum dots using a one-step eco-friendly, low-cost thermal treatment of a renewable biomass, i.e. natural chia seeds.

scholarly journals Facile and High-yield Synthesis of N-doped Carbon Quantum Dots from Biomass Quinoa Saponin for the Detection of Co2+

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Cuo Zhou ◽  
Shunwei Wu ◽  
Shenghui Qi ◽  
Weijun Song ◽  
Chunyan Sun
Keyword(s):  
Quantum Dots ◽  
Metal Ion ◽  
Light Emission ◽  
Low Cost ◽  
Carbon Quantum Dots ◽  
High Yield ◽  
Excitation Wavelength ◽  
Uniform Size ◽  
Orthogonal Experiments ◽  
Co2 Detection

Hydrothermal synthesis of carbon quantum dots (CQDs) from natural biomass is a green and sustainable route for CQDs applications in various fields. In this work, the preparation and characterization of CQDs based on quinoa saponin were investigated. The optimum synthetic conditions determined by orthogonal experiments were as follows: 2 g quinoa saponin powder and 0.04 mol ethylenediamine reacted at 200°C for 10 h. The relative fluorescence quantum yield (QY = 22.2%) can be obtained, which is higher than some results reported in the literatures. The prepared CQDs had a small and uniform size (∼2.25 nm) and exhibited excitation wavelength-dependent blue light emission behavior. The CQDs displayed excellent sensitivity for Co2+ detection along with good linear correlation ranging from 20 to 150 µM and the detection limit of 0.49 µM. The CQDs prepared in this experiment were successfully implanted into soybean sprouts for fluorescence imaging. The sprouts could grow healthily even soaked in the CQDs solution for two weeks, demonstrating the low toxicity of the CQDs. The advantages of the CQDs, such as low cost, ease of manufacture, nontoxicity, and stability, have potential applications in many areas such as metal ion detection and biosensing.

A simple one-step hydrothermal route towards water solubilization of carbon quantum dots from soya-nuggets for imaging applications

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 87528-87534 ◽  
Author(s):  
Prashant Dubey ◽  
Kumud Malika Tripathi ◽  
Ragini Mishra ◽  
Anshu Bhati ◽  
Anupriya Singh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrothermal Process ◽  
Carbon Quantum Dots ◽  
Single Step ◽  
Water Soluble ◽  
High Yield ◽  
Synthetic Approach ◽  
Hydrothermal Route ◽  
E Coli ◽  
One Step

A high yield simple synthetic approach for water soluble photoluminescent carbon quantum dots via a single step, hydrothermal process, was described. Photoluminescent multi-colored emissions were used to label E. coli cells.

scholarly journals Synthesis of Copper–nitrogen Codoped Carbon Quantum Dots Using Frangipani as a Carbon Source and Application of Metronidazole Determination

2021 ◽  
Author(s):  
Lan Yuwei Lan ◽  
Yuwei Lan ◽  
Wenbin Bao ◽  
Chunfeng Liang ◽  
Guowei Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Source ◽  
Detection Method ◽  
Fluorescence Probe ◽  
Low Cost ◽  
Copper Acetate ◽  
Carbon Quantum Dots ◽  
Excitation Wavelength ◽  
One Step ◽  
High Fluorescence

Abstract High-fluorescence Cu/N codoped carbon quantum dots (Cu/NCQDs) were prepared by a one-step hydrothermal method using frangipani as the carbon source and copper acetate as the copper source. The Cu/NCQDs exhibited high-intensity, stable blue fluorescence that is independent of the excitation wavelength. Since metronidazole can effectively quench the fluorescence intensity of Cu/NCQDs, a metronidazole fluorescence-detection method using Cu/NCQDs as the fluorescence probe was developed, and the quenching mechanism was studied.The method has the advantages of simplicity, speed, and low cost. Besides,it has a wider linear range and detection limit. Further, the metronidazole content in actual samples was determined by this method, with good results.

Good's buffer derived highly emissive carbon quantum dots: excellent biocompatible anticancer drug carrier

2016 ◽  
Vol 4 (14) ◽  
pp. 2412-2420 ◽  
Author(s):  
Aneeya K. Samantara ◽  
Santanu Maji ◽  
Arnab Ghosh ◽  
Bamaprasad Bag ◽  
Rupesh Dash ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Anticancer Drug ◽  
Drug Carrier ◽  
Carbon Quantum Dots ◽  
One Step

A facile one-step approach has been developed for the synthesis of carbon quantum dots (CQDs) from Good’s buffer.

scholarly journals Carbon Quantum Dots Encapsulated Molecularly Imprinted Fluorescence Quenching Particles for Sensitive Detection of Zearalenone in Corn Sample

Toxins ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 438 ◽  
Author(s):  
Manyu Shao ◽  
Ming Yao ◽  
Sarah De Saeger ◽  
Liping Yan ◽  
Suquan Song
Keyword(s):  
Quantum Dots ◽  
Fluorescence Quenching ◽  
Sol Gel ◽  
Carbon Quantum Dots ◽  
Detection Range ◽  
Molecularly Imprinted ◽  
Relative Standard ◽  
Sol Gel Process ◽  
One Step ◽  
Optimized Conditions

An eco-friendly and efficient one-step approach for the synthesis of carbon quantum dots (CDs) that encapsulated molecularly imprinted fluorescence quenching particles (MIFQP) and their application for the determination of zearalenone (ZEA) in a cereal sample are described in this study. CDs with high luminescence were first synthesized, and then encapsulated in the silica-based matrix through a non-hydrolytic sol-gel process. The resulting ZEA-imprinted particles exhibited not only an excellent specific molecular recognition of ZEA, but also good photostability and obvious template binding-induced fluorescence quenching. Under the optimized conditions, the fluorescence intensity of MIFQP was inversely proportional to the concentration of ZEA. By validation, the detection range of these fluorescence quenching materials for ZEA was between 0.02 and 1.0 mg L−1, and the detection limit was 0.02 mg L−1 (S/N = 3). Finally, the MIFQP sensor was successfully applied for ZEA determination in corn with recoveries from 78% to 105% and the relative standard deviation (RSD %) was lower than 20%, which suggests its potential in actual applications.

One-step hydrothermal synthesis of down/up-conversion luminescence F-doped carbon quantum dots for label-free detection of Fe3+

2019 ◽  
Vol 151 ◽  
pp. 104217 ◽  
Author(s):  
Dan Hong ◽  
Xiaoyan Deng ◽  
Jiaman Liang ◽  
Jiayu Li ◽  
Yi Tao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrothermal Synthesis ◽  
Carbon Quantum Dots ◽  
Label Free ◽  
Label Free Detection ◽  
One Step

Facile and one-step preparation carbon quantum dots from biomass residue and their applications as efficient surfactants

2019 ◽  
Vol 40 (5) ◽  
pp. 627-633 ◽  
Author(s):  
Ruibo Ren ◽  
Zeyu Zhang ◽  
Pinhui Zhao ◽  
Jingtao Shi ◽  
Kechao Han ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
One Step
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