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Li Ruiyi
Jiangnan University
Quantum dotInorganic chemistryChemistryAerogelGraphene
31Publications
14H-index
505Citations
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Publications 34
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#2Li RuiyiH-Index: 14
Last. Wang GuangliH-Index: 15
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Abstract Electrochemical properties of metal-graphene hybrid depend on size and dispersion of metal nanoparticles on graphene sheets. The study reports a facile synthesis of silver-graphene hybrid with controllable size and excellent dispersion. Histidine-functionalized graphene quantum dots (His-GQDs) are firmly bound on graphene sheets of graphite oxide (GO) and then combined with Ag+ to form stable Ag/His-GQD/GO complex. Followed by heating in N2 to produce Ag/His-GQD/G. The resulting hybrid ...
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#1Li RuiyiH-Index: 14
Last. Li Zaijun (Jiangnan University)H-Index: 22
view all 5 authors...
Abstract Determination of circulating cancer cells in human blood is potential to be convenient diagnosis of different cancers. The study reports one strategy for synthesis of folic acid and glutamic acid-functionalized graphene quantum dot-palladium@gold (FA/Glu-GQD-Pd@Au). Firstly, FA/Glu-GQD was prepared by thermolysis of the mixture of citric acid, glutamic acid and folic acid. Then, it was used as the stabilizer and reducer for synthesis of FA/Glu-GQD-Pd@Au. The resulting hybrid was employe...
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#1Li Ruiyi (Jiangnan University)H-Index: 14
#2Li Zaijun (Jiangnan University)H-Index: 22
Last. Wang Guangli (Jiangnan University)H-Index: 15
view all 7 authors...
Abstract Rare earth upconversion nanoparticle and graphene quantum dot have attracted a great research interest in biomedicine, but they all have some inherent defects as nanocarriers for in vivo drug delivery system. The study reported one new concept for fabrication of graphene quantum dot-rare earth upconversion hybrid via coordination between rare earth ion and histidine and octadecylamine-functionalized graphene quantum dot and subsequent fluoride ion replacement and hydrothermal treatment....
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#2Li Ruiyi (Jiangnan University)H-Index: 14
#3Sun Xiulan (Jiangnan University)H-Index: 11
Last. Li Zaijun (Jiangnan University)H-Index: 22
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D-penicillamine and histidine-functionalized graphene quantum dot (DPA-GQD-His) was synthesized and applied in a fluorometric method for determination of acetamiprid using a G-quadruplex DNAzyme. At first DNA probe (probe 1) consists of a target-specific aptamer with two arms of DNA segments. Probe 1 was hybridized with DNA probe 2 composed of a single DNA sequence with two split G-rich DNA sequences. This leads to the formation of a triplex-to-G-quadruplex (TPGQ). Next, acetamiprid was hybridiz...
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#1Chu Hongxia (Jiangnan University)
#2Hu Ji (Luoyang Institute of Science and Technology)
Last. Sun Xiulan (Jiangnan University)H-Index: 11
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Abstract Glutamic acid-functionalized graphene quantum dots (Glu-GQD) was prepared by pyrolysis of citric acid and glutamic acid and used as reducing agent and stabilizer to produce Glu-GQD/Au in the presence of tannic acid. The resulting Glu-GQD/Au was covalently connected with aptamer (Apt) of acetamiprid to obtain one redox probe with catalyst. The study shows that Glu-GQD/Au offers nanostar-like structure with average particle size of 102.5 nm, composing of several nanometer-sized gold nanoc...
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#1Liu Ling (Jiangnan University)H-Index: 4
#2Li Ruiyi (Jiangnan University)H-Index: 14
Last. Li Zaijun (Jiangnan University)H-Index: 22
view all 5 authors...
Abstract Graphene quantum dot-NaYF4:Yb,Er was made via hydrothermal synthesis. The resulting hybrid shows good water-solubility, small particle size of 11.5 nm and significant enhancement of upconversion emission. Further, the hybrid was designed as an upconversion biosensing nanoplatform for detection of carcinoembryonic antigen based on the exonuclease III-aided target recycling amplification. Firstly, the linker DNA (LDNA) is covalently attached to the hybrid surface. Then, the upconversion e...
1 CitationsSource
#1Chu Hongxia (Jiangnan University)
#2Li Zaijun (Jiangnan University)H-Index: 22
Last. Gu Zhiguo (Jiangnan University)H-Index: 13
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Graphene quantum dots (GQDs) were prepared via pyrolysis of citric acid and glutamic acid, then reacted with chlorauric acid to form a gold/graphene quantum dot hybrid (Au/GQD), and finally connected with hairpin DNA probe 1 (H1) and thionine (Thi). The H1-Au/GQD-Thi composite is found to be a viable redox probe for electrochemical and aptamer-based determination of vascular endothelial growth factor VEGF165. A dual amplification strategy is employed based on the use of molecular machine and the...
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#1Li Ruiyi (Jiangnan University)H-Index: 14
#2Cui Fangchao (Jiangnan University)H-Index: 1
Last. Li Zaijun (Jiangnan University)H-Index: 22
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Abstract Early diagnosis of cancers is critical for prevention of metastasis and early treatment. The study reports an electrochemical sensor for detection of cancer cell based on folic acid (FA) and octadecylamine (OA)-functionalized graphene aerogel microspheres (FA-GAM-OA). Citric acid was mixed with FA and OA and heated at 180 °C for 4 h to form FA and OA-functionalized graphene oxide. The graphene oxide was employed as solid particle surfactant for stabilizing toluene-in-water emulsion. The...
9 CitationsSource
#1Yan Ping (Jiangnan University)H-Index: 1
#2Li Ruiyi (Jiangnan University)H-Index: 14
Last. Liu Junkang (Jiangnan University)H-Index: 20
view all 7 authors...
Abstract Pentaethylenehexamine and d -penicillamine co-functionalized graphene quantum dots (PEHA-GQD-DPA) was made via one two-step thermal pyrolysis. The resulting PEHA-GQD-DPA is composed of the graphene sheets with an average size of 3.16 nm and the rich of functional groups. It gives an ultra strong fluorescence emission with the fluorescent quantum yield of 90.91% and sensitive and selective optical response towards Hg2+. The fluorescence intensity linearly decreases with the increase of H...
5 CitationsSource
#1Li Ruiyi (Jiangnan University)H-Index: 14
#2Zhu Haiyan (Jiangnan University)H-Index: 4
Last. Liu Junkang (Jiangnan University)H-Index: 20
view all 4 authors...
The study reports on the synthesis of a graphene aerogel@octadecylamine-functionalized carbon quantum dots (GA@O-CQDs). The graphene oxide aqueous dispersion, O-CQDs aqueous dispersion and toluene were strongly mixed to make a toluene-in-water Pickering emulsion. The graphene oxide sheets in the aqueous phase are reduced by hydrazine hydrate, diffuse into the toluene droplets, and self-assemble into graphene oxide microgels. This is followed by freeze-drying and thermal annealing to obtain the G...
17 CitationsSource
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