scholarly journals Nitrogen‐doped Hollow Co3O4Nanofibers for both Solid‐state pH Sensing and Improved Non‐enzymatic Glucose Sensing

2019 ◽  
Vol 31 (4) ◽  
pp. 678-687 ◽  
Author(s):  
Qiuchen Dong ◽  
Xudong Wang ◽  
William S. Willis ◽  
Donghui Song ◽  
Yikun Huang ◽  
...  
2016 ◽  
Vol 4 (38) ◽  
pp. 9027-9035 ◽  
Author(s):  
Daqin Chen ◽  
Weiwei Wu ◽  
Yongjun Yuan ◽  
Yang Zhou ◽  
Zhongyi Wan ◽  
...  

Nitrogen-doped carbon dots with multi-state visible absorption and full-color blue/yellow/red emissions are synthesized, and show potential applications in solid-state-lighting.


2017 ◽  
Vol 5 (35) ◽  
pp. 18684-18690 ◽  
Author(s):  
Degang Jiang ◽  
Chenwei Li ◽  
Wenrong Yang ◽  
Jizhen Zhang ◽  
Jingquan Liu

Herein, we report a new template method for fabricating an arbitrary-shaped compressible nitrogen-doped graphene aerogel (GA).


2014 ◽  
Vol 1 (4) ◽  
pp. 799-807 ◽  
Author(s):  
Chengzhen Wei ◽  
Yuanying Liu ◽  
Xinran Li ◽  
Junhong Zhao ◽  
Zhen Ren ◽  
...  

Author(s):  
Wei Wang ◽  
Wan-Yun Xie ◽  
Fei-Xiang Zhou ◽  
Liang Chen ◽  
Minjie Zhou ◽  
...  

ACS Sensors ◽  
2018 ◽  
Vol 3 (11) ◽  
pp. 2278-2285 ◽  
Author(s):  
Yan Yang ◽  
Mengchan Xia ◽  
Hansen Zhao ◽  
Sichun Zhang ◽  
Xinrong Zhang

2018 ◽  
Vol 5 (7) ◽  
pp. 180245 ◽  
Author(s):  
Tingting Yu ◽  
Haijiao Wang ◽  
Chongzheng Guo ◽  
Yanli Zhai ◽  
Jianzhou Yang ◽  
...  

The emerging carbon quantum dots (CQDs) have been attracting significant attention for their prominent fluorescence, excellent stability and outstanding biocompatibility. Here, we report a facile one-step synthesis of highly fluorescent CQDs by using phthalic acid and triethylenediamine hexahydrate as precursors through a simple microwave-assisted method. The reaction time needed is only 60 s, which is less time-consuming than most previous reports. The phthalic acid with a benzene ring can improve the photoluminescence properties of CQDs as it can provide foreign sp 2 conjugating units, and then finally result in long-wavelength emission. The synthesized CQDs were fully characterized by transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Besides, the impacts of different freed ratio on physical and chemical properties of CQDs were investigated in detail. The prepared CQDs exhibited strong green fluorescence with a broad maximum emission wavelength. The quantum yields of the CQDs can reach 16.1% in aqueous solution and they were successfully used in cell imaging with good biocompatibility. Moreover, in solid state, the CQDs with the feed ratio of 1 : 0.5 showed a strong green–yellow fluorescence which may have great potential to fabricate optoelectronic devices. Furthermore, the prepared CQDs also showed high pH sensitivity and can act as a fluorescence nanosensor for pH sensing.


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