Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties

Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties

For the first time, a facile, ultrafast, ammonia-driven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale producti...

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Main Authors: Zheng Binjie, Chen Yuanfu, Li Pingjian, Wang Zegao, Cao Bingqiang, Qi Fei, Liu Jinbo, Qiu Zhiwen, Zhang Wanli
Format: Article
Language:English
Published: De Gruyter 2017-01-01
Series:Nanophotonics
Subjects:
nitrogen-doped
graphene quantum dots
ultrafast synthesis
fluorescence nanophotonics
Online Access:https://doi.org/10.1515/nanoph-2016-0102
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spelling doaj-907a05acea7340a0aaf221b1a80891ef2021-09-06T19:20:30ZengDe GruyterNanophotonics2192-86062192-86142017-01-016125926710.1515/nanoph-2016-0102nanoph-2016-0102Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical propertiesZheng Binjie0Chen Yuanfu1Li Pingjian2Wang Zegao3Cao Bingqiang4Qi Fei5Liu Jinbo6Qiu Zhiwen7Zhang Wanli8State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaInterdisciplinary Nanoscience Center, Aarhus University (iNANO), DK-8000 Aarhus C, DenmarkSchool of Materials Science and Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, P.R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaSchool of Materials Science and Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, P.R. ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. ChinaFor the first time, a facile, ultrafast, ammonia-driven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale production. The as-synthesized NGQDs consisting of one to three graphene monolayers exhibit highly crystalline quality with an average size of 5.3 nm. A new fluorescence (FL) emission peak at 390 nm is observed, which might be attributed to the doped nitrogen atoms into the GQDs. An interesting red-shift is observed by comparing the FL excitation spectra to the UV-visible absorption spectra. Based on the optical properties, the detailed Jablonski diagram representing the energy level structure of NGQDs is derived.https://doi.org/10.1515/nanoph-2016-0102nitrogen-dopedgraphene quantum dotsultrafast synthesisfluorescence nanophotonics
collection DOAJ
language English
format Article
sources DOAJ
author Zheng Binjie
Chen Yuanfu
Li Pingjian
Wang Zegao
Cao Bingqiang
Qi Fei
Liu Jinbo
Qiu Zhiwen
Zhang Wanli
spellingShingle Zheng Binjie
Chen Yuanfu
Li Pingjian
Wang Zegao
Cao Bingqiang
Qi Fei
Liu Jinbo
Qiu Zhiwen
Zhang Wanli
Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
Nanophotonics
nitrogen-doped
graphene quantum dots
ultrafast synthesis
fluorescence nanophotonics
author_facet Zheng Binjie
Chen Yuanfu
Li Pingjian
Wang Zegao
Cao Bingqiang
Qi Fei
Liu Jinbo
Qiu Zhiwen
Zhang Wanli
author_sort Zheng Binjie
title Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
title_short Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
title_full Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
title_fullStr Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
title_full_unstemmed Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
title_sort ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
publisher De Gruyter
series Nanophotonics
issn 2192-8606
2192-8614
publishDate 2017-01-01
description For the first time, a facile, ultrafast, ammonia-driven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale production. The as-synthesized NGQDs consisting of one to three graphene monolayers exhibit highly crystalline quality with an average size of 5.3 nm. A new fluorescence (FL) emission peak at 390 nm is observed, which might be attributed to the doped nitrogen atoms into the GQDs. An interesting red-shift is observed by comparing the FL excitation spectra to the UV-visible absorption spectra. Based on the optical properties, the detailed Jablonski diagram representing the energy level structure of NGQDs is derived.
topic nitrogen-doped
graphene quantum dots
ultrafast synthesis
fluorescence nanophotonics
url https://doi.org/10.1515/nanoph-2016-0102
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AT qiuzhiwen ultrafastammoniadrivenmicrowaveassistedsynthesisofnitrogendopedgraphenequantumdotsandtheiropticalproperties
AT zhangwanli ultrafastammoniadrivenmicrowaveassistedsynthesisofnitrogendopedgraphenequantumdotsandtheiropticalproperties
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