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Chinese Journal of Structural Chemistry 2023年第6期42卷 41-46页

作者： Gui-Qi lai Zhixin Jiang Hao Zhong lai-hon chung Ning Li Jun He School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006PR China

Photocatalytic hydrogen evolution reaction(HER)represents one of the most promising technologies for sus-tainable *** though metal-organic framework(MOF),comprising rich topologies and tunable functionalities,is getting attention as a new generation of photocatalyst,a majority of them only provide unclear active sites along with the use of external noble-metal based photosensitizers and environmentally unfriendly ***,it is urged to develop MOFs possessing structurally unambiguous active sites along with inherent photosensitizing units and execute photocatalytic HER with greener sacrificial ***,we report a UiO-66-type framework,namely UiO-66-dcbdt-Cd(dcbdt^(2-)=1,4-dicarboxylatebenzene-2,3-dithiol),bearing Cd-thiocatecholato moieties as intrinsic photosensitizing units and structurally well-defined active sites for photocatalytic HER in H_(2)***-66-dcbdt-Cd gave the best HER yield of 5.29 mmol g^(-1)and rate of 1.32 mmol g^(-1)h^(-1),outperforming the negligible HER performance of pristine metal-free *** work provides insight to manipulation of thhiocatecholate functionalities inside MOFs to construct inherent photosensitizing units as well as stable structurally unambiguous active sites for sustainable photocatalytic applications.

关键词： UiO-66 framework Metal-thiocatecholato Photocatalytic hydrogen evolution Inherent photosensitizer

Achieving High CO_(2)Photoreduction Activity by Conductive Crosslinks of Metal–Organic Framework

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CCS Chemistry 2024年第5期6卷 1211-1221页

作者： Ning Li Gui-Qi lai lai-hon chung Fei Yu Jun He Ya-Qian Lan Department School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhouGuangdong 510006 School of Chemistry South China Normal UniversityGuangzhou 510006 School of Chemistry and Materials Science Nanjing Normal UniversityNanjing 210023

Fast photogenerated charge migration is crucial for the improvement of photocatalytic performance,but its deliberate modulation is *** work presents two Zr-based metal–organic framework catalysts,GDUT-8 and GDUT-8-Ox,for photocatalytic CO_(2)***,thiophene pendants in GDUT-8 were coupled covalently via Scholl reaction to give GDUT-8-Ox,a catalyst with at least two orders of magnitude(up to 6.1×10^(−3)S cm^(−1))enhanced conductivity and faster transport of photogenerated carriers during ***,from GDUT-8 to GDUT-8-Ox,stronger ligand-to-cluster charge transfer with pronounced light absorption extension was *** a result,GDUT-8-Ox exhibited the highest photocatalytic CO_(2)-to-HCOO−conversion rate(1725μmol g^(−1)h^(−1))to date,in the absence of photosensitizer,as well as turnover number,turnover frequency,and quantum efficiency much higher than *** work presents an unprecedented strategy to accelerate the photogenerated carrier transport of photocatalysts.

关键词： metal-organic framework Scholl reaction covalent crosslinks high conductivity CO_(2)photoreduction CO_(2)-to-HCOO−conversion

Flexible side arms of ditopic linker as effective tools to boost proton conductivity of Ni_(8)-pyrazolate metal-organic framework

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Chinese Chemical Letters 2022年第6期33卷 3227-3230页

作者： Jieying Hu Hu Zhang Zihao Feng Qian-Ru Luo Can-Min Wu Yuan-Hui Zhong Jian-Rong Li lai-hon chung Wei-Ming Liao Jun He School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Two primitive metal-organic frameworks(MOFs),Ni L1 and Ni L2,based on Ni_(8)O_(6)-cluster and ditopic pyrazolate linkers,L1(with rigid alkyne arms)and L2(with flexible alkyne chains),were *** proton conductivities of these MOFs in pristine form and imidazole-encapsulated forms,Im@Ni L1 and Im@Ni L2,were measured and *** introduction of imidazole molecules,the proton conductivity could be increased by 3 to 5 orders of magnitude and reached as high as 1.72×10^(-2)S/cm(at 98%RH and 80℃).Also,whether imidazole molecules were introduced or not,Ni_(8)O_(6)-based MOFs with L2 in general gave better proton conductivity than those with L1 signifying that flexible side arms indeed assist proton conduction probably via establishment of efficient proton-conducting channels along with formation of highly ordered domains of water/imidazole molecules within the network *** the active Ni_(8)O_(6)-cluster,tuning flexibility of linker pendants serves as an alternative approach to regulate/modulate the proton conductivity of MOFs.

关键词： Proton conductivity Metal-organic framework Pyrazolate linkers Nickel-oxide cluster Imidazole encapsulation

Insight into stable,concentrated radicals from sulfur-functionalized alkyne-rich crystalline frameworks and application in solar-to-vapor conversion

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Chinese Journal of Structural Chemistry 2024年第8期43卷 65-72页

作者： Jian-Rong Li Jieying Hu lai-hon chung Jilong Zhou Parijat Borah Zhiqing Lin Yuan-Hui Zhong Hua-Qun Zhou Xianghua Yang Zhengtao Xu Jun He School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006China Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Jieyang515200China Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A^(*)STAR)2 Fusionopolis WaySingapore138634Republic of Singapore

Organic radicals feature versatile unpaired electrons key for photoelectronic and biomedical applications but remain difficult to access in stable concentrated *** disclose easy generation of stable,concentrated radicals from various alkynyl phenyl motifs,including 1)sulfur-functionalized alkyne-rich organic linkers in crystalline frameworks;2)the powders of these molecules alone;3)simple *** Zr-based framework,the generation of radical-rich crystalline framework was achieved by thermal annealing in the range of 300-450℃.For terminal alkynes,electron paramagnetic resonance signals(EPR,indicative of free radicals)arise after air exposure or mild heating(e.g,70℃).Further heating(e.g.,150℃for 3 h)raises the radical concentrations up to 3.30 mol kg^(-1).For more stable internal alkynes,transformations into porous radical solids can also be triggered,albeit at higher temperatures(e.g.,250-500℃).The resulted radical-containing solids are porous,stable to air as well as heat(up to 300-450℃)and exhibit photothermal conversion and solar-driven water evaporation *** formation of radicals can be ascribed to extensive alkyne cycliza-tions,forming defects,dangling bonds and the associated radicals stabilized by polycyclicπ-systems.

关键词： Porous coordination polymers Persistent radicals Nanographene Photothermal conversion Solar-to-vapor conversion

Exploiting fly models to investigate rare human neurological disorders

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Neural Regeneration Research 2025年第1期20卷 21-28页

作者： Tomomi Tanaka Hyung-Lok chung Department of Neurology Houston Methodist Research InstituteHoustonTXUSA Department of Neurology Weill Cornell Medical CollegeNew YorkNYUSA

Rare neurological diseases,while individually are rare,collectively impact millions globally,leading to diverse and often severe neurological *** attributed to genetic mutations that disrupt protein function or structure,understanding their genetic basis is crucial for accurate diagnosis and targeted *** investigate the underlying pathogenesis of these conditions,researchers often use non-mammalian model organisms,such as Drosophila(fruit flies),which is valued for their genetic manipulability,cost-efficiency,and preservation of genes and biological functions across evolutionary *** tools available in Drosophila,including CRISPR-Cas9,offer a means to manipulate gene expression,allowing for a deep exploration of the genetic underpinnings of rare neurological *** boasts a versatile genetic toolkit,rapid generation turnover,and ease of large-scale experimentation,making it an invaluable resource for identifying potential drug *** can expose flies carrying disease-associated mutations to various compounds,rapidly pinpointing promising therapeutic agents for further investigation in mammalian models and,ultimately,clinical *** this comprehensive review,we explore rare neurological diseases where fly research has significantly contributed to our understanding of their genetic basis,pathophysiology,and potential therapeutic *** discuss rare diseases associated with both neuron-expressed and glial-expressed *** cases include mutations in CDK19 resulting in epilepsy and developmental delay,mutations in TIAM1 leading to a neurodevelopmental disorder with seizures and language delay,and mutations in IRF2BPL causing seizures,a neurodevelopmental disorder with regression,loss of speech,and abnormal *** we explore mutations in EMC1 related to cerebellar atrophy,visual impairment,psychomotor retardation,and gain-of-function mutations in ACOX1 causing Mitchell ***-of-fun

关键词： ACOX1 Drosophila melanogaster glia lipid metabolism model organisms neuroinflammation neurologic disorders neuron rare disease VLCFA

Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua Wang chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing Cheng Yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

Dual‑Donor‑Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

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Nano-Micro Letters 2025年第3期17卷 376-388页

作者： Anhai Liang Yuqing Sun Sein chung Jiyeong Shin Kangbo Sun Chaofeng Zhu Jingjing Zhao Zhenmin Zhao Yufei Zhong Guangye Zhang Kilwon Cho Zhipeng Kan Center On Nanoenergy Research Institute of Science and Technology for Carbon Peak&NeutralitySchool of Physical Science&TechnologyGuangxi UniversityNanning 530004People’s Republic of China Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673South Korea College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118People’s Republic of China Zhejiang Engineering Research Center for Fabrication and Application of Advanced Photovoltaic Materials School of Materials Science and EngineeringNingboTech UniversityNingbo 315100People’s Republic of China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning 530004People’s Republic of China

Trap-assisted charge recombination is one of the primary limitationsof restricting the performance of organic solar cells. However, effectivelyreducing the presence of traps in the photoactive layer remains ***, wide bandgap polymer donor PTzBI-dF is demonstrated as an effectivemodulator for enhancing the crystallinity of the bulk heterojunction active layerscomposed of D18 derivatives blended with Y6, leading to dense and orderedmolecular packings, and thus, improves photoluminescence quenching *** a result, the photovoltaic devices exhibit reduced trap-assisted charge recombinationlosses, achieving an optimized power conversion efficiency of over 19%.Besides the efficiency enhancement, the devices comprised of PTzBI-dF as athird component simultaneously attain decreased current leakage, improved chargecarrier mobilities, and suppressed bimolecular charge recombination, leading toreduced energy losses. The advanced crystalline structures induced by PTzBI-dFand its characteristics, such as well-aligned energy level, and complementaryabsorption spectra, are ascribed to the promising performance *** findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providingguidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

Structural, mechanical and corrosion properties of CNT-304 stainless steel nanocomposites

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Progress in Natural Science:Materials International 2019年第5期29卷 595-602页

作者： A.V.Radhamani hon chung Lau S.Ramakrishna Department of Civil and Environmental Engineering National University of Singapore Department of Mechanical Engineering Centre for Nanofibers and Nanotechnology National University of Singapore

In this work, a systematic investigation was performed on the structural, mechanical and corrosion properties of CNT incorporated 304 stainless steel. Various concentrations of CNT from 0.5 to 4 wt% were incorporated into the 304 stainless steel matrix to investigate the feasibility of fabrication and enhancement of strength and other material properties. The fabrication of CNT-steel composite was achieved through a spark plasma sintering process at a sintering temperature of 800℃. Raman and morphological studies confirmed that the CNT structure was retained in the sintered pellets. Optimum performance was found at 0.5 wt% CNT giving a Vickers hardness of 351 Hv and compressive yield strength of 404 MPa which were 5.5 and 2.0 times, respectively, those of pristine steel. Corrosion studies with 3.5 wt% Na Cl solution revealed a slight increase in the corrosion rate for CNT dispersed samples.

关键词： Carbon nanotube 304-Stainless steel Spark plasma sintering Hardness Compression Corrosion

Modified optical remote sensing algorithms for the Pearl River Estuary

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Frontiers of Earth Science 2015年第4期9卷 732-741页

作者： Man-chung CHIM Jiayi PAN Wenfeng lai Institute of Space and Earth Information Science The Chinese University of Hong Kong Hong Kong SAR China

This study aims to develop new algorithms to retrieve sea surface parameters including concentrations of Chlorophyll a （Chl a） and Suspended Particulate Matter （SPM）, and absorbance of Colored Dissolved Organic Matter （aCDOM） by incorporating the contribution of red bands to make them more adaptable to case 2 waters. Optical remote sensing algorithms have demonstrated efficient retrieval of Chl a, SPM, and aCDOM, yet they are not very accurate especially for coastal areas. It has also been found that the default algorithm has overestimated Chl a in the Pearl River Estuary, and shown poor correlation for CDOM absorbance. By incorporating the red band ratios into the algorithm, a correction effect has been shown, which improves the accuracy of quantifying the actual concentration. Modeling and data fitting of the algorithm have been done based on 61 data samples collected in the Pearl River estuary during a cruise from 3 to 11 May 2014. The study also attempts to modify the aerosol correction bands used in SeaDAS to prevent saturation of these bands. The modified algorithms showed an R-Square value of 0.7289 for Chl a fitting, and 0.7338 for CDOM fitting, and corrected overestimation of Chl a concentration in the Pearl River estuary.

关键词： optical remote sensing algorithm Pearl River Estuary

Optimal design theories of tuned mass dampers with nonlinear viscous damping

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Earthquake Engineering and Engineering Vibration 2009年第4期8卷 547-560页

作者： Lap-Loi chung lai-Yun Wu Hsu-Hui Huang chung-Hsin Chang Kuan-Hua Lien Center for Research on Earthquake Engineering （NCREE） Chinese Taipei Department of Civil Engineering Taiwan University. Chinese Taipei

Optimal design theory for linear tuned mass dampers （TMD） has been thoroughly investigated, but is still under development for nonlinear TMDs. In this paper, optimization procedures in the time domain are proposed for design of a TMD with nonlinear viscous damping. A dynamic analysis of a structure implemented with a nonlinear TMD is conducted first. Optimum design parameters for the nonlinear TMD are searched using an optimization method to minimize the performance index. The feasibility of the proposed optimization method is illustrated numerically by using the Taipei 101 structure implemented with TMD. The sensitivity analysis shows that the performance index is less sensitive to the damping coefficient than to the frequency ratio. Time history analysis is conducted using the Taipei 101 structure implemented with different TMDs under wind excitation. For both linear and nonlinear TMDs, the comfort requirements for building occupants are satisfied as long as the TMD is properly designed. It was found that as the damping exponent increases, the relative displacement of the TMD decreases but the damping force increases.

关键词： optimal design theory tuned mass damper (TMD) nonlinear performance index sensitivity analysis Taipei 101