scholarly journals Microwave-assisted preparation of a silver nanoparticles/N-doped carbon dots nanocomposite and its application for catalytic reduction of rhodamine B, methyl red and 4-nitrophenol dyes

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 5139-5148
Author(s):  
Bhagavanth Reddy G ◽  
Ramakrishna Dadigala ◽  
Rajkumar Bandi ◽  
Kondaiah Seku ◽  
Koteswararao D ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Rhodamine B ◽  
Carbon Dots ◽  
Catalytic Reduction ◽  
High Catalytic Activity ◽  
Methyl Red ◽  
Microwave Assisted ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Microwave Assisted Method

A silver nanoparticles/nitrogen-doped carbon dots (AgNPs/NCDs) nanocomposite was prepared by a microwave-assisted method, and exhibited high catalytic activity towards the reduction of rhodamine B, methyl red and 4-nitrophenol at ambient temperature.

scholarly journals A novel method for the preparation of solvent-free, microwave-assisted and nitrogen-doped carbon dots as fluorescent probes for chromium(vi) detection and bioimaging

RSC Advances ◽  
2019 ◽  
Vol 9 (15) ◽  
pp. 8230-8238 ◽  
Author(s):  
Meng Cao ◽  
Yong Li ◽  
Yunze Zhao ◽  
Chongyang Shen ◽  
Hongyan Zhang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Solvent Free ◽  
Fluorometric Detection ◽  
Microwave Assisted ◽  
Chromium Vi ◽  
Fluorescence Characteristics ◽  
Novel Method ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Microwave Assisted Method

Herein, N-doped carbon dots with excellent fluorescence characteristics were prepared by a solvent-free, microwave-assisted method and employed for the fluorometric detection of Cr(vi) and bioimaging.

Tuning Optical Properties of Nitrogen-Doped Carbon Dots Through Fluorescence Resonance Energy Transfer Using Rhodamine B for Ratiometric Sensing of Mercury ion

2021 ◽  
Author(s):  
Alagan Muthurasu ◽  
V GANESH
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Rhodamine B ◽  
Carbon Dots ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Nitrogen Doped ◽  
Physical Chemical ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Carbon dots (CDs) exhibiting fluorescence property are generally derived from carbonaceous materials and possessing ultra small size with various exciting physical, chemical and photo-properties that have been used in many...

Microwave-assisted synthesis of nitrogen doped carbon dots using prickly pear as the carbon source and its application as highly selective sensor for Cr(VI) and as patterning agent

2021 ◽  
Author(s):  
Shreya Bhatt ◽  
Gaurav Vyas ◽  
Parimal Paul
Keyword(s):  
Carbon Dots ◽  
Microwave Assisted Synthesis ◽  
Nitrogen Doped ◽  
Water Dispersible ◽  
Microwave Assisted ◽  
Bio Imaging ◽  
Natural Carbon ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Selective Sensor

Preparation of water dispersible carbon dots from inexpensive natural carbon precursors and its application for purposes such as sensing, bio-imaging, patterning agent etc. is showing growing interest in recent years....

scholarly journals A Novel Ratiometric Probe Based on Nitrogen-Doped Carbon Dots and Rhodamine B Isothiocyanate for Detection of Fe3+in Aqueous Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Lin Liu ◽  
Lu Chen ◽  
Jiangong Liang ◽  
Lingzhi Liu ◽  
Heyou Han
Keyword(s):  
Rhodamine B ◽  
Carbon Dots ◽  
Dynamic Range ◽  
Tap Water ◽  
Buffer Solution ◽  
Nitrogen Doped ◽  
Rhodamine B Isothiocyanate ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Ratiometric Probe

A ratiometric probe for determining ferric ions (Fe3+) was developed based on nitrogen-doped carbon dots (CDs) and rhodamine B isothiocyanate (RhB), which was then applied to selective detection of Fe3+in PB buffer solution, lake water, and tap water. In the sensing system, FePO4particles deposit on the surface of CDs, resulting in larger particles and surface passivation. The fluorescence (FL) intensity and the light scattering (LS) intensity of CDs can be gradually enhanced with the addition of Fe3+, while the FL intensity of RhB remains constant. The ratiometric light intensity of CDs LS and RhB FL was quantitatively in response to Fe3+concentrations in a dynamic range of 0.01–1.2 μM, with a detection limit as low as 6 nM. Other metal ions, such as Fe2+, Al3+, K+, Ca2+, and Co2+, had no significant interference on the determination of Fe3+. Compared with traditional probes based on single-signal probe for Fe3+detection, this dual-signal-based ratiometric probe exhibits a more reliable and stable response on target concentration and is characterized by easy operation in a simple fluorescence spectrophotometer.

scholarly journals Synthesis And Excited State Processes of Arrays Containing Amine-Rich Carbon Dots and Unsymmetrical Rylene Diimides

2020 ◽  
Author(s):  
Luka Dordevic ◽  
Michele Cacioppo ◽  
Francesca Arcudi ◽  
Tobias Scharl ◽  
Philipp Haines ◽  
...  
Keyword(s):  
Excited State ◽  
Carbon Dots ◽  
Electronic Communication ◽  
Time Resolved ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Donor Acceptor ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Energy Processes

<p>Combining carbon dots (CDs) with π-extended chromophores is an attractive way to study the electronic and energy processes of the former as a key step to many applications, including photosensing, photocatalysis, or photosensitization. CDs, in conjugation with chromophores, can have value in preparing donor-acceptor hybrids, and can also be used as scaffolds to support electronic communication between dyes. In this work, we conjugate two different rylene diimides, naphthalene and perylene diimides (NDI and PDI, respectively), with amorphous nitrogen-doped carbon dots. We take advantage of the imidization reaction between the amine rich surface of the carbon dots and the monimide monoanhydride precursors of NDIs and PDIs, under microwave assisted conditions. The resulting (nano)hybrids were characterized also by spectroscopic methods. In particular, time-resolved spectroscopy for the multichromophoric array, consisting of CDs and both rylene diimides, allowed us to elucidate the complex inter-chromophoric interactions taking place in the excited state.</p>

scholarly journals Synthesis of Arrays Containing Amine-Rich Carbon Dots and Unsymmetrical Rylene Diimides

2020 ◽  
Author(s):  
Luka Dordevic ◽  
Michele Cacioppo ◽  
Francesca Arcudi ◽  
Tobias Scharl ◽  
Philipp Haines ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Electronic Communication ◽  
Spectroscopic Methods ◽  
Time Resolved ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Donor Acceptor ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Energy Processes

<p>Combining carbon dots (CDs) with π-extended chromophores is an attractive way to study the electronic and energy processes of the former as a key step to many applications, including photosensing, photocatalysis, or photosensitization. CDs, in conjugation with chromophores, can have value in preparing donor-acceptor hybrids, and can also be used as scaffolds to support electronic communication between dyes. In this work, we conjugate two different rylene diimides, naphthalene and perylene diimides (NDI and PDI, respectively), with amorphous nitrogen-doped carbon dots. We take advantage of the imidization reaction between the amine rich surface of the carbon dots and the monimide monoanhydride precursors of NDIs and PDIs, under microwave assisted conditions. The resulting (nano)hybrids were characterized also by spectroscopic methods. In particular, time-resolved spectroscopy for the multichromophoric array, consisting of CDs and both rylene diimides, allowed us to elucidate the complex inter-chromophoric interactions taking place in the excited state.</p>

scholarly journals Synthesis And Excited State Processes of Arrays Containing Amine-Rich Carbon Dots and Unsymmetrical Rylene Diimides

2020 ◽  
Author(s):  
Luka Dordevic ◽  
Michele Cacioppo ◽  
Francesca Arcudi ◽  
Tobias Scharl ◽  
Philipp Haines ◽  
...  
Keyword(s):  
Excited State ◽  
Carbon Dots ◽  
Electronic Communication ◽  
Time Resolved ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Donor Acceptor ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Energy Processes

<p>Combining carbon dots (CDs) with π-extended chromophores is an attractive way to study the electronic and energy processes of the former as a key step to many applications, including photosensing, photocatalysis, or photosensitization. CDs, in conjugation with chromophores, can have value in preparing donor-acceptor hybrids, and can also be used as scaffolds to support electronic communication between dyes. In this work, we conjugate two different rylene diimides, naphthalene and perylene diimides (NDI and PDI, respectively), with amorphous nitrogen-doped carbon dots. We take advantage of the imidization reaction between the amine rich surface of the carbon dots and the monimide monoanhydride precursors of NDIs and PDIs, under microwave assisted conditions. The resulting (nano)hybrids were characterized also by spectroscopic methods. In particular, time-resolved spectroscopy for the multichromophoric array, consisting of CDs and both rylene diimides, allowed us to elucidate the complex inter-chromophoric interactions taking place in the excited state.</p>

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