Institution
Yunnan Normal University
Education•Kunming, Yunnan, China•
About: Yunnan Normal University is a education organization based out in Kunming, Yunnan, China. It is known for research contribution in the topics: Population & Computer science. The organization has 5786 authors who have published 5123 publications receiving 58330 citations.
Papers published on a yearly basis
Papers
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TL;DR: The G QDs are capable of converting blue light into white light when the GQDs are coated onto a blue light emitting diode and the photoluminescence quantum yields were determined to be 7-11%.
Abstract: Glucose-derived water-soluble crystalline graphene quantum dots (GQDs) with an average diameter as small as 1.65 nm (∼5 layers) were prepared by a facile microwave-assisted hydrothermal method. The GQDs exhibits deep ultraviolet (DUV) emission of 4.1 eV, which is the shortest emission wavelength among all the solution-based QDs. The GQDs exhibit typical excitation wavelength-dependent properties as expected in carbon-based quantum dots. However, the emission wavelength is independent of the size of the GQDs. The unique optical properties of the GQDs are attributed to the self-passivated layer on the surface of the GQDs as revealed by electron energy loss spectroscopy. The photoluminescence quantum yields of the GQDs were determined to be 7–11%. The GQDs are capable of converting blue light into white light when the GQDs are coated onto a blue light emitting diode.
1,465 citations
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TL;DR: This study highlights the importance of knowing the carrier and removal status of canine coronavirus in the diet of animals and also investigates its role in the establishment and disposal of infectious diseases.
Abstract: Detection Ying Zhou,†,‡ Jun Feng Zhang, and Juyoung Yoon*,† †Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea ‡Key Laboratory of Medicinal Chemistry for Natural Resource, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, P. R. China
859 citations
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TL;DR: This tutorial review focuses on the recent contributions concerning the fluorescent or colorimetric sensors for these metal ions, and is organized according to their structural classifications and unique mechanisms between the sensors and metal ions.
Abstract: Due to the wide range of applications and biological significance, the development of optical probes for silver, gold and platinum ions has been an active research area in the past few years. This tutorial review focuses on the recent contributions concerning the fluorescent or colorimetric sensors for these metal ions, and is organized according to their structural classifications (for Ag+ detection) and unique mechanisms between the sensors and metal ions (for Au3+ and Pt2+ detection).
714 citations
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TL;DR: In this article, the impregnation ratios which reflect the actual mass fraction of pure paraffin impregnated were studied comparatively for the impregnations with and without vacuum assistance, and the surface porosity was obtained by employing the image processing approach.
459 citations
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TL;DR: The layered structure of nitrogen-doped graphene quantum dots (N-GQDs) is reported which possess broadband emission ranging from 300 to >1000 nm and a broadband photodetector with responsivity as high as 325 V/W is demonstrated by coating N-GZDs onto interdigital gold electrodes.
Abstract: Material that can emit broad spectral wavelengths covering deep ultraviolet, visible, and near-infrared is highly desirable. It can lead to important applications such as broadband modulators, photodetectors, solar cells, bioimaging, and fiber communications. However, there is currently no material that meets such desirable requirement. Here, we report the layered structure of nitrogen-doped graphene quantum dots (N-GQDs) which possess broadband emission ranging from 300 to >1000 nm. The broadband emission is attributed to the layered structure of the N-GQDs that contains a large conjugated system and provides extensive delocalized π electrons. In addition, a broadband photodetector with responsivity as high as 325 V/W is demonstrated by coating N-GQDs onto interdigital gold electrodes. The unusual negative photocurrent is observed which is attributed to the trapping sites induced by the self-passivated surface states in the N-GQDs.
444 citations
Authors
Showing all 5821 results
Name | H-index | Papers | Citations |
---|---|---|---|
Juyoung Yoon | 108 | 435 | 46307 |
Jong Seung Kim | 97 | 502 | 36410 |
Dapeng Yu | 94 | 745 | 33613 |
Ke Wu | 87 | 1242 | 33226 |
Guoliang Li | 84 | 795 | 31122 |
Kewei Chen | 81 | 448 | 25178 |
Jun Zhang | 73 | 947 | 25651 |
Min Zhao | 71 | 547 | 24549 |
Cheng Wang | 50 | 741 | 10362 |
Sung Jin Kim | 49 | 271 | 8344 |
Bong Rae Cho | 48 | 241 | 8777 |
Gang Li | 48 | 406 | 7713 |
Hong-En Wang | 44 | 106 | 4931 |
Haolin Tang | 44 | 205 | 7977 |
Chulhun Kang | 44 | 98 | 7624 |