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 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>

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 Time-resolved spectroscopy of the ensembled photoluminescence of nitrogen- and boron/nitrogen-doped carbon dots

2018 ◽  
Vol 20 (17) ◽  
pp. 11673-11681 ◽  
Author(s):  
Sunghu Kim ◽  
Byung-Kuk Yoo ◽  
Yuri Choi ◽  
Byeong-Su Kim ◽  
Oh-Hoon Kwon
Keyword(s):  
Exponential Decay ◽  
Carbon Dots ◽  
Surface States ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Nitrogen Doped ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Boron Nitrogen ◽  
Exponential Fit

The non-exponential decay of the photoluminescence of carbon dots are analyzed using stretched exponential fit functions to reflect the heterogeneity in their luminescent surface states.

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

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...

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