Journal ArticleDOI
Surface state selective tunable emission of graphene quantum dots exhibiting novel thermal quenching characteristics
TLDR
In this article, a one-pot, facile and rapid synthesis technique was used to synthesize high luminescent, crystalline graphene quantum dots (GQDs) of homogenous size and shape with high yield.About:
This article is published in Carbon.The article was published on 2018-12-01. It has received 26 citations till now. The article focuses on the topics: Graphene & Quantum dot.read more
Citations
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Synthesis of graphene quantum dots and their applications in drug delivery
Changhong Zhao,Changhong Zhao,Xuebin Song,Ya Liu,Yifeng Fu,Lilei Ye,Nan Wang,Fan Wang,Lu Li,Mohsen Mohammadniaei,Ming Zhang,Qiqing Zhang,Johan Liu,Johan Liu +13 more
TL;DR: This review focuses on the recent advances in the synthesis of graphene quantum dots (GQDs) and their applications in drug delivery and their various drug delivery-release modes.
Journal ArticleDOI
Origin of high photoluminescence yield and high SERS sensitivity of nitrogen-doped graphene quantum dots
TL;DR: In this paper, the origin of high photoluminescence quantum yield (PL QY) and high surface-enhanced Raman scattering (SERS) sensitivity of in-situ nitrogen-doped graphene quantum dots (N-GQDs) was elucidated.
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Quantitative Understanding of Charge Transfer Mediated Fe3+ Sensing and Fast Photoresponse by N-doped Graphene Quantum Dots Decorated on Plasmonic Au Nanoparticles
TL;DR: The proposed sensor is successfully implemented for the ultrasensitive detection of Fe3+ ions in human serum and Brahmaputra river water samples, representing its high potential applications in clinical as well as environmental diagnosis.
Journal ArticleDOI
Graphene quantum dot induced tunable growth of nanostructured MnCo2O4.5 composites for high-performance supercapacitors
TL;DR: In this paper, a one-step hydrothermal reaction is developed to incorporate graphene quantum dots (GQDs) and MnCo2O4.5 with GQDs serving as both a conductive filling material and structure inducing agent.
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Recent advances in graphene quantum dot-based optical and electrochemical (bio)analytical sensors
Ashish Kalkal,Sachin Kadian,Sachin Kadian,Rangadhar Pradhan,Gaurav Manik,Gopinath Packirisamy +5 more
TL;DR: In this paper, a review of the scope of GQDs in a variety of optical and electrochemical chemosensors as well as biosensors is proposed, along with the current challenges and future prospects.
References
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Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
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Fine Structure Constant Defines Visual Transparency of Graphene
Rahul R. Nair,Peter Blake,Peter Blake,Alexander N. Grigorenko,K. S. Novoselov,Timothy J. Booth,Timothy J. Booth,Tobias Stauber,Tobias Stauber,Nuno M. R. Peres,Nuno M. R. Peres,A. K. Geim +11 more
TL;DR: It is shown that the opacity of suspended graphene is defined solely by the fine structure constant, a = e2/hc � 1/137 (where c is the speed of light), the parameter that describes coupling between light and relativistic electrons and that is traditionally associated with quantum electrodynamics rather than materials science.
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Graphene-Based Ultracapacitors
TL;DR: CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here their performance in an ultracapacitor cell is demonstrated, illustrating the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.
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Raman spectroscopy of graphene and graphite: Disorder, electron phonon coupling, doping and nonadiabatic effects
TL;DR: In this article, the authors focus on the origin of the D and G peaks and the second order of D peak and show that the G and 2 D Raman peaks change in shape, position and relative intensity with number of graphene layers.
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Raman spectroscopy as a versatile tool for studying the properties of graphene
Andrea C. Ferrari,Denis M. Basko +1 more
TL;DR: The state of the art, future directions and open questions in Raman spectroscopy of graphene are reviewed, and essential physical processes whose importance has only recently been recognized are described.