Facile Synthesis of Formate-Functionalized Graphene Quantum Dots

2019 ◽  
Author(s):  
Jonathan Bruce ◽  
Jude Clapper
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Electrophilic Substitution ◽  
Structural Modification ◽  
Single Photon ◽  
Photon Emission ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Single Photon Emission ◽  
Facile Synthesis

Graphene quantum dots have proven useful for a variety of applications due to their impressive bandgap tunability, which can be achieved through structural modification methods including edge functionalization and doping. Here, we investigate the functionalization of graphene quantum dots with formate esters using a method of noncatalyzed electrophilic substitution. We also examine the optical and structural properties of these formate-functionalized graphene quantum dots using UV-Vis Spectrophotometry, IR Spectroscopy, and NMR Spectroscopy, with the functionalization causing a redshift in absorption consistent with a reduction in bandgap. The findings in this paper have the potential to be used in applications ranging from single photon emission in quantum computing to tunable fluorescence in bioimaging.

scholarly journals Facile Synthesis of Formate-Functionalized Graphene Quantum Dots

2019 ◽  
Author(s):  
Jonathan Bruce ◽  
Jude Clapper
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Electrophilic Substitution ◽  
Structural Modification ◽  
Single Photon ◽  
Photon Emission ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Single Photon Emission ◽  
Facile Synthesis

Graphene quantum dots have proven useful for a variety of applications due to their impressive bandgap tunability, which can be achieved through structural modification methods including edge functionalization and doping. Here, we investigate the functionalization of graphene quantum dots with formate esters using a method of noncatalyzed electrophilic substitution. We also examine the optical and structural properties of these formate-functionalized graphene quantum dots using UV-Vis Spectrophotometry, IR Spectroscopy, and NMR Spectroscopy, with the functionalization causing a redshift in absorption consistent with a reduction in bandgap. The findings in this paper have the potential to be used in applications ranging from single photon emission in quantum computing to tunable fluorescence in bioimaging.

scholarly journals Facile Synthesis of Formate-Functionalized Graphene Quantum Dots

2019 ◽  
Author(s):  
Jonathan Bruce ◽  
Jude Clapper
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Electrophilic Substitution ◽  
Structural Modification ◽  
Single Photon ◽  
Photon Emission ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Single Photon Emission ◽  
Facile Synthesis

Graphene quantum dots have proven useful for a variety of applications due to their impressive bandgap tunability, which can be achieved through structural modification methods including edge functionalization and doping. Here, we investigate the functionalization of graphene quantum dots with formate esters using a method of noncatalyzed electrophilic substitution. We also examine the optical and structural properties of these formate-functionalized graphene quantum dots, with the functionalization causing a redshift in absorption consistent with a reduction in bandgap. The findings in this paper have the potential to be used in applications ranging from single photon emission in quantum computing to tunable fluorescence in bioimaging.

scholarly journals Facile Synthesis of Formate-Functionalized Graphene Quantum Dots

2019 ◽  
Author(s):  
Jonathan Bruce ◽  
Jude Clapper
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Electrophilic Substitution ◽  
Structural Modification ◽  
Single Photon ◽  
Photon Emission ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Single Photon Emission ◽  
Facile Synthesis

Graphene quantum dots have proven useful for a variety of applications due to their impressive bandgap tunability, which can be achieved through structural modification methods including edge functionalization and doping. Here, we investigate the functionalization of graphene quantum dots with formate esters using a method of noncatalyzed electrophilic substitution. We also examine the optical and structural properties of these formate-functionalized graphene quantum dots, with the functionalization causing a redshift in absorption consistent with a reduction in bandgap. The findings in this paper have the potential to be used in applications ranging from single photon emission in quantum computing to tunable fluorescence in bioimaging.

scholarly journals Single photon emission from graphene quantum dots at room temperature

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Shen Zhao ◽  
Julien Lavie ◽  
Loïc Rondin ◽  
Lucile Orcin-Chaix ◽  
Carole Diederichs ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Single Photon ◽  
Photon Emission ◽  
Graphene Quantum Dots ◽  
Single Photon Emission

scholarly journals Chaotic Quantum Key Distribution

Cryptography ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 24
Author(s):  
Noah Cowper ◽  
Harry Shaw ◽  
David Thayer
Keyword(s):  
Quantum Computing ◽  
Quantum Key Distribution ◽  
Single Photon ◽  
Photon Emission ◽  
Key Distribution ◽  
Maximum Amount ◽  
Single Photons ◽  
Single Photon Emission ◽  
Amount Of Information ◽  
Communication Scheme

The ability to send information securely is a vital aspect of today’s society, and with the developments in quantum computing, new ways to communicate have to be researched. We explored a novel application of quantum key distribution (QKD) and synchronized chaos which was utilized to mask a transmitted message. This communication scheme is not hampered by the ability to send single photons and consequently is not vulnerable to number splitting attacks like other QKD schemes that rely on single photon emission. This was shown by an eavesdropper gaining a maximum amount of information on the key during the first setup and listening to the key reconciliation to gain more information. We proved that there is a maximum amount of information an eavesdropper can gain during the communication, and this is insufficient to decode the message.

Single photon emission from top-down etched III-nitride quantum dots

2020 ◽  
Vol 31 (13) ◽  
pp. 13LT01 ◽  
Author(s):  
Yaonan Hou ◽  
Yong Wang ◽  
Qingkang Ai
Keyword(s):  
Quantum Dots ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Top Down

scholarly journals Single-photon emission from InAsP quantum dots embedded in density-controlled InP nanowires

2017 ◽  
Vol 56 (4S) ◽  
pp. 04CP04 ◽  
Author(s):  
Shougo Yanase ◽  
Hirotaka Sasakura ◽  
Shinjiro Hara ◽  
Junichi Motohisa
Keyword(s):  
Quantum Dots ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission

scholarly journals Single-photon emission from electrically driven InP quantum dots epitaxially grown on CMOS-compatible Si(001)

2012 ◽  
Vol 23 (33) ◽  
pp. 335201 ◽  
Author(s):  
M Wiesner ◽  
W-M Schulz ◽  
C Kessler ◽  
M Reischle ◽  
S Metzner ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Cmos Compatible ◽  
Inp Quantum Dots

scholarly journals Polarisation-controlled single photon emission at high temperatures from InGaN quantum dots

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9421-9427 ◽  
Author(s):  
T. Wang ◽  
T. J. Puchtler ◽  
T. Zhu ◽  
J. C. Jarman ◽  
L. P. Nuttall ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
High Temperatures ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Peltier Cooling

We achieved fast single photon emission with polarisation control beyond the 200 K Peltier cooling barrier in solid-state quantum dots.

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