Self-assembly of nitrogen-doped carbon nanoparticles: a new ratiometric UV-vis optical sensor for the highly sensitive and selective detection of Hg2+ in aqueous solution

The Analyst ◽  
2016 ◽  
Vol 141 (11) ◽  
pp. 3313-3318 ◽  
Author(s):  
Yudi Ruan ◽  
Lie Wu ◽  
Xiue Jiang
Keyword(s):  
Aqueous Solution ◽  
Optical Sensor ◽  
Self Assembly ◽  
Carbon Nanoparticles ◽  
The Self ◽  
Selective Detection ◽  
Nitrogen Doped ◽  
Highly Sensitive ◽  
Nitrogen Doped Carbon

A novel ratiometric UV-vis optical sensor for Hg2+ was developed based on the self-assembly of nitrogen-doped carbon nanoparticles.

scholarly journals Luminescent supramolecular hydrogels from a tripeptide and nitrogen-doped carbon nanodots

2017 ◽  
Vol 8 ◽  
pp. 1553-1562 ◽  
Author(s):  
Maria C Cringoli ◽  
Slavko Kralj ◽  
Marina Kurbasic ◽  
Massimo Urban ◽  
Silvia Marchesan
Keyword(s):  
Rheological Properties ◽  
Self Assembly ◽  
Carbon Nanostructures ◽  
Homogeneous System ◽  
The Self ◽  
Diameter Distribution ◽  
Carbon Nanodots ◽  
Nitrogen Doped ◽  
Physiological Conditions ◽  
Nitrogen Doped Carbon

The combination of different components such as carbon nanostructures and organic gelators into composite nanostructured hydrogels is attracting wide interest for a variety of applications, including sensing and biomaterials. In particular, both supramolecular hydrogels that are formed from unprotected D,L-tripeptides bearing the Phe-Phe motif and nitrogen-doped carbon nanodots (NCNDs) are promising materials for biological use. In this work, they were combined to obtain luminescent, supramolecular hydrogels at physiological conditions. The self-assembly of a tripeptide upon application of a pH trigger was studied in the presence of NCNDs to evaluate effects at the supramolecular level. Luminescent hydrogels were obtained whereby NCND addition allowed the rheological properties to be fine-tuned and led to an overall more homogeneous system composed of thinner fibrils with narrower diameter distribution.

A highly sensitive and selective detection of Cr(VI) and ascorbic acid based on nitrogen-doped carbon dots

Talanta ◽  
2018 ◽  
Vol 181 ◽  
pp. 318-325 ◽  
Author(s):  
Yuhua Zhang ◽  
Xian Fang ◽  
Hong Zhao ◽  
Zengxi Li
Keyword(s):  
Ascorbic Acid ◽  
Carbon Dots ◽  
Selective Detection ◽  
Nitrogen Doped ◽  
Highly Sensitive ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Water-soluble, nitrogen-doped fluorescent carbon dots for highly sensitive and selective detection of Hg2+ in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 40393-40401 ◽  
Author(s):  
Y. Zhang ◽  
Y. H. He ◽  
P. P. Cui ◽  
X. T. Feng ◽  
L. Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Water Soluble ◽  
Soluble Nitrogen ◽  
Selective Detection ◽  
One Pot ◽  
Nitrogen Doped ◽  
Highly Sensitive ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Fluorescent Carbon Dots

Highly fluorescent water-soluble and nitrogen-doped carbon dots (NCDs) were synthesized by a simple one-pot hydrothermal method using citric acid as carbon source and urea as nitrogen source.

scholarly journals Self-Assembled Nanomaterials Based on Complementary Sn(IV) and Zn(II)-Porphyrins, and Their Photocatalytic Degradation for Rhodamine B Dye

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3598
Author(s):  
Nirmal K. Shee ◽  
Hee-Joon Kim
Keyword(s):  
Aqueous Solution ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Absorption Bands ◽  
Ligand Coordination ◽  
Rhodamine B Dye ◽  
Metal Ligand

A series of porphyrin triads (1–6), based on the reaction of trans-dihydroxo-[5,15-bis(3-pyridyl)-10,20-bis(phenyl)porphyrinato]tin(IV) (SnP) with six different phenoxy Zn(II)-porphyrins (ZnLn), was synthesized. The cooperative metal–ligand coordination of 3-pyridyl nitrogens in the SnP with the phenoxy Zn(II)-porphyrins, followed by the self-assembly process, leads to the formation of nanostructures. The red-shifts and remarkable broadening of the absorption bands in the UV–vis spectra for the triads in CHCl3 indicate that nanoaggregates may be produced in the self-assembly process of these triads. The emission intensities of the triads were also significantly reduced due to the aggregation. Microscopic analyses of the nanostructures of the triads reveal differences due to the different substituents on the axial Zn(II)-porphyrin moieties. All these nanomaterials exhibited efficient photocatalytic performances in the degradation of rhodamine B (RhB) dye under visible light irradiation, and the degradation efficiencies of RhB in aqueous solution were observed to be 72~95% within 4 h. In addition, the efficiency of the catalyst was not impaired, showing excellent recyclability even after being applied for the degradation of RhB in up to five cycles.

A Bright Nitrogen-doped-Carbon-Dots based Fluorescent Biosensor for Selective Detection of Copper Ions

2021 ◽  
Vol 5 (1) ◽  
pp. 84-92
Author(s):  
Shuting Chen ◽  
Chaoqun Chen ◽  
Jian Wang ◽  
Fang Luo ◽  
Longhua Guo ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Copper Ions ◽  
Selective Detection ◽  
Nitrogen Doped ◽  
Fluorescent Biosensor ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

An iron–nitrogen doped carbon and CdS hybrid catalytic system for efficient CO2 photochemical reduction

2021 ◽  
Vol 57 (16) ◽  
pp. 2033-2036
Author(s):  
Jin-Han Guo ◽  
Xiao-Yao Dao ◽  
Wei-Yin Sun
Keyword(s):  
Aqueous Solution ◽  
Catalytic System ◽  
Hybrid System ◽  
Photochemical Reduction ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

A new iron–nitrogen doped carbon and CdS hybrid system was developed to efficiently reduce CO2 to CO under UV/vis light (AM 1.5G) irradiation in aqueous solution.

Lab in a tube: a fast-assembled colorimetric sensor for highly sensitive detection of oligonucleotides based on a hybridization chain reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (55) ◽  
pp. 44714-44721 ◽  
Author(s):  
Siqi Zhang ◽  
Kun Wang ◽  
Zhenyu Li ◽  
Zhongmin Feng ◽  
Ting Sun
Keyword(s):  
Complex Formation ◽  
Dna Sequence ◽  
Self Assembly ◽  
The Self ◽  
Hybridization Chain Reaction ◽  
Chain Reaction ◽  
Highly Sensitive ◽  
G Quadruplex ◽  
Colored Product ◽  
Highly Sensitive Detection

Upon adding THBV, the self-assembly of THBV with H1 allows the rest of the DNA sequence of H1 to accelerate H1–H2 complex formation. The G-quadruplex at the end of the H1–H2 complex could catalyze TMB into a colored product.

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