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RISS 인기검색어
- 검색키워드
- 저자 : Yurong Guo (검색결과 5 건)
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Yurong Guo,Yanan Wang,Yingdan Gao,Jingran Zhang,Chao Wang,Guangjiu Zhao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
The 1,8-naphthalimide derivatives as the guest and the benzophenone (BP) analogues bis(4-chlorophenyl)methanone (BP2C) and bis(4-fluorophenyl)methanone (BP2F) benzophenone derivativesas the host, we constructed a series of novel doping systems with fluorescence and room temperaturephosphorescence (RTP) dual emission. The steady-state spectroscopy, ultrafast spectroscopy techniques,and theoretical calculations indicate that Förster resonance energy transfer (FRET) between singlet statesbetween host and guest components enables energy redistribution in doped systems. At the same time,the Dexter energy transfer (DET) between the triplet states realizes the obvious absorption of the excitedtriplet state of the guest, resulting in the long-lived room temperature phosphorescence of the doped system. Doping materials have unlimited potential for information storage and anti-counterfeiting byexploiting the properties of photo activation.
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Laser-Induced Morphology Change Based on Small Molecular Model Compounds Photo-Detector
Ruiping Qin,Deen Guo,Jien Yang,Yurong Jiang 한국고분자학회 2018 Macromolecular Research Vol.26 No.11
Three small molecules furnished with a planar core, (5,6-bis(octyloxy) benzo[c][1,2,5] thiadiazole-4,7-diyl)bis(thiophene-5,2-diyl), and two wings, thieno [3,2-b]indole or carbazoles, were synthesized and used as sensing layer to make photo-detectors. The devices can detect photons at a wavelength band of 300-700 nm and exhibit a sensitive photo-response under on/off modulation. Near UV (405 nm) and visible (532 nm) laser beam were the light source in this work. The corrected responsivity reached up to 498 mA W-1 at 532 nm and 411 mA W-1 at 405 nm. Laser induced photo-current escalation was observed and investigated. For longer molecules, the photo-current was easy to be constant than the shorter reference counterpart. This special photo response mechanism was studied by alternating current impedance spectroscopy (IS) measurements and X-ray diffraction (XRD) exprements. Possible relations between molecular weight and various figures of merit for photo detectors were discussed.
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Mengqi Wang,Kaiyue Zhang,Feixiang Ji,Yurong Guo,Chao Wang,Shiping Wang,Ya Chu,Guangjiu Zhao 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
A water-soluble probe composite material (CDs/ZnO) was synthesized by microwave pyrolysis methodsof citric acid, urea and zinc oxide (ZnO) with aggregation-induced emission activity. We creatively realizedthe composite of CDs and nano-ZnO in the form of foam, then used as bactericide for the first timeand showed excellent antibacterial properties. Also, the composite materials overcame the problem ofaggregation-induced quenching (ACQ) and realized solid-state emission. The materials had two differentemission centers, and the two emission peaks were varied with the change of excitation wavelength. Furthermore, Methyl red (MR) showed fluorescence quenching for CDs/ZnO with obvious linear correlation,which demonstrated potential in the measurement of MR in dyeing wastewater. The CDs/ZnO weobtained perfectly inherited the advantages of CDs and nano ZnO, it has not just no cytotoxicity to cells,but also has a good killing effect on bacteria. Hence, this work shows significant adaptable fluorescencebasedprotocol with enormous potential applications in biology.
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Bolted end plate connections for steel reinforced concrete composite structures
Li, Xian,Wu, Yuntian,Mao, Weifeng,Xiao, Yan,Anderson, J.C.,Guo, Yurong Techno-Press 2006 Structural Engineering and Mechanics, An Int'l Jou Vol.24 No.3
In order to improve the constructability and meanwhile ensure excellent seismic behavior, several innovative composite connection details were conceived and studied by the authors. This paper reports experimental results and observations on seismic behavior of steel beam bolted to reinforced concrete column connections (bolted RCS or BRCS). The proposed composite connection details involve post tensioning the end plates of the steel beams to the reinforced concrete or precast concrete columns using high-strength steel rods. A rational design procedure was proposed to assure a ductile behavior of the composite structure. Strut-and-tie model analysis indicates that a bolted composite connection has a favorable stress transfer mechanism. The excellent capacity and behavior were then validated through five full-scale beam to column connection model tests.
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Wanhe Luo,Yongtao Jiang,Jinhuan Liu,Beibei Sun,Xiuge Gao,Samah Attia Algharib,Dawei Guo,Jie Wei,Yurong Wei The Korean Society of Veterinary Science 2024 Journal of Veterinary Science Vol.25 No.2
Background: Biofilms, such as those from Staphylococcus epidermidis, are generally insensitive to traditional antimicrobial agents, making it difficult to inhibit their formation. Although quercetin has excellent antibiofilm effects, its clinical applications are limited by the lack of sustained and targeted release at the site of S. epidermidis infection. Objectives: Polyethylene glycol-quercetin nanoparticles (PQ-NPs)-loaded gelatin-N,O-carboxymethyl chitosan (N,O-CMCS) composite nanogels were prepared and assessed for the on-demand release potential for reducing S. epidermidis biofilm formation. Methods: The formation mechanism, physicochemical characterization, and antibiofilm activity of PQ-nanogels against S. epidermidis were studied. Results: Physicochemical characterization confirmed that PQ-nanogels had been prepared by the electrostatic interactions between gelatin and N,O-CMCS with sodium tripolyphosphate. The PQ-nanogels exhibited obvious pH and gelatinase-responsive to achieve on-demand release in the micro-environment (pH 5.5 and gelatinase) of S. epidermidis. In addition, PQ-nanogels had excellent antibiofilm activity, and the potential antibiofilm mechanism may enhance its antibiofilm activity by reducing its relative biofilm formation, surface hydrophobicity, exopolysaccharides production, and eDNA production. Conclusions: This study will guide the development of the dual responsiveness (pH and gelatinase) of nanogels to achieve on-demand release for reducing S. epidermidis biofilm formation.
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