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Light(Science & Applications) 2019年第1期8卷 766-775页

作者： Jing-Xiang Zhang wai-Lun Chan Chen Xie Yan Zhou Ho-Fai Chau Partha Maity George T.Harrison Aram Amassian Omar F.Mohammed Peter A.Tanner wai-kwok wong Ka-Leung wong Department of Chemistry Hong Kong Baptist UniversityKowloon TongHong Kong S.A.R.China Hanshan Normal University ChaozhouGuangdong ProvinceChina Department of Biology Hong Kong Baptist UniversityKowloon TongHong Kong S.A.R.China KAUST Solar Center Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

Although lanthanide double-decker complexes with hetero-macrocyclic ligands as functional luminescent and magnetic materials have promising properties,their inferior water solubility has negated their biomedical ***,four water-soluble homoleptic lanthanide(Ln=Gd,Er,Yb and La)sandwiches with diethylene-glycoldisubstituted porphyrins(DD)are reported,with their structures proven by both quantum chemical calculations and scanning tunneling *** findings demonstrate that the near-infrared emission intensity and singlet oxygen(1O2)quantum yields of YbDD and GdDD in aqueous media are higher than those of the reported capped lanthanide monoporphyrinato analogues,YbN and GdN;the brightness and luminescence lifetime in water of YbDD are greater than those of *** work provides a new dimension for the future design and development of molecular theranostics-based water-soluble double-decker lanthanide bisporphyrinates.

关键词： lanthanide porphyrin complexes

A NOVEL PHASE CONTROL TECHNIQUE FOR INJECTION LOCKED OSCILLATORS

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Journal of Electronics(China) 1995年第4期12卷 374-377页

作者： kwok-wai wong Albert K. Y. Lai 曾学刚 Department of Electronic Engineering the Chinese University of Hong Kong Shatin Hong Kong University of Electronic Science and Technology of China Chengdu 610054 A novel technique to obtain injection locked oscillators phase tuning beyond 180°is demonstrated. The idea is to cascade injection locked oscillators together for phase change accumulation. A two stage injection locked oscillators can theoretically provide a maximum of 360?phase change within the locking range. This is particularly useful for phased array antenna applications.

A novel technique to obtain injection locked oscillators phase tuning beyond 180° is demonstrated. The idea is to cascade injection locked oscillators together for phase change accumulation. A two stage injection locked oscillators can theoretically provide a maximum of 360?phase change within the locking range. This is particularly useful for phased array antenna applications.

关键词： Phase control Locking Oscillators Antenna array

Porphyrin-based Molecules for Photovoltaic Applications

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Porphyrin-based Molecules for Photovoltaic Applications

Impressive Near-infrared Brightness and Singlet Oxygen Generation from Strategic Lanthanide–porphyrin Double-decker Complexes in Aqueous Solution

中国化学会第30届学术年会-第二十二分会：有机光伏的机遇和挑战

作者： Xunjin Zhu wai-kwok wong wai-Yeung wong Institute of Molecular Functional Materials and Department of Chemistry Hong Kong Baptist University

With the development of accessible and renewable energy sources, solution-processed bulk heterojunction organic solar cells(BHJ OSCs) have been well developed and recognized as one of the most promising next-generation green technology alternatives to inorganic solar cells because of their solution processability, low cost, light weight, and flexibility. Specifically, small-molecule BHJ OSCs have attracted much attention recently, in which small molecules as donor materials show defined molecular structure and molecular weight, high purity, and less batch-to-batch variations in comparison with their polymer counterparts. In dye-sensitized solar cells, porphyrin-based push–pull photosensitizers have demonstrated their success for their large and rigid planar conjugated structures, which can enhance π-electron delocalization and promote intermolecular π–π interaction, as well as charge transport in devices. However, either polymers or small molecules that are porphyrin based show less contribution in BHJ OSCs, and the main impediments to performance are unfavorable aggregation, short exciton diffusion length and low charge mobility. In this talk, a series of new A-D-A porphyrin-based molecules were designed, synthesized and characterized. These molecules can be used as efficient electron donors in high-performance solution-processed BHJ OSCs.

关键词： Prophyrin Photoboltaic Applications Solution-processed Bulk heterojunction

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Impressive Near-infrared Brightness and Singlet Oxygen Gener...

Nanoimprint lithography-assisted block copolymer self-assembly for hyperfine fabrication of magnetic patterns based on L10-FePt nanoparticles

第十一届全国化学生物学学术会议

作者： Jing-Xiang Zhang Partha Maity George T.Harrison Aram Amassian Omar F.Mohammed Peter A.Tanner wai-kwok wong Ka-Leung wong Department of Chemistry Hong Kong Baptist University Hanshan Normal University KAUST Solar Center Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)

Although lanthanide double-decker complexes with hetero-macrocyclic ligands as functional luminescent and magnetic materials have promising properties, their inferior water solubility has negated their biomedical applications.[1] Herein, four water-soluble homoleptic lanthanide（Ln = Gd, Er, Yb and La） sandwiches with diethylene-glycol-disubstituted porphyrins（DD） are reported, with their structures proven by both quantum chemical calculations and scanning tunneling microscopy. Our findings demonstrate that the near-infrared emission intensity and singlet oxygen（1 O2） quantum yields of YbDD and GdDD in water are higher than those of the reported capped lanthanide monoporphyrinato analogues, YbN and GdN;the brightness and luminescence lifetime in water of YbDD are greater than those of YbN. This work provides a new dimension for the future design and development of molecular theranostics-based water-soluble double-decker lanthanide bisporphyrinates.[2]

关键词： Porphyrin-Lnthanide complex NIR-II luminescence photodynamic therapy

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Science China Chemistry 2025年

作者： Jie Zhang Yi Chen Guijun Li Zelin Sun Zhengong Meng wai-Yeung wong Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic University The Hong Kong Polytechnic University Shenzhen Research Institute Division of Integrative Systems and Design and Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology School of Flexible Electronics (Future Technology) and Institute of Advanced Materials (IAM) Nanjing Tech University

L10-FePt-type bit-patterned media has provided a promising alternative for ultrahigh-density magnetic recording systems in the current digital era, but rapid fabrication of magnetic patterns with hyperfine bit islands is still challenging, especially with the target for miniaturization and scalable production simultaneously. Herein, Fe,Pt-containing block copolymers were utilized as single-source precursors for solution-processable patterning and subsequent generation of the demanding magnetic FePt dots by in situ pyrolysis. High-throughput nanoimprint lithography was initially employed to fabricate the predefined bit cells precisely,and then the intrinsic self-assembly of phase-separated block copolymers further drove the formation of accurate bit *** from the synergistic effect of top-down lithographic approach and bottom-up self-assembly, the customizable patterns could be achieved for large-scale mass production in targeted areas, but high-density isolated dots could also be accurately aligned along the patterned features after subsequent self-assembly. This reliable strategy would provide a good avenue to precisely construct ultrahigh-density magnetic data storage devices.

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Genome of tropical bed bug Cimex hemipterus(Cimicidae,Hemiptera)reveals tetraspanin expanded in bed bug ancestor

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Insect Science 2025年第1期32卷 42-54页

作者： Sean Tsz Sum Law Wenyan Nong Chade Li Tze Kiu Chong Ho Yin Yip Thomas Swale Siu wai Chiu Roger Yat-Nork Chung Hon-Ming Lam Samuel Y.S.wong Hung wong Jerome H.L.Hui School of Life Sciences Simon F.S.Li Marine Science LaboratoryState Key Laboratory of AgrobiotechnologyInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina Dovetail Genomics The United States of America School of Life Sciences The Chinese University of Hong KongHong KongChina School of Public Health and Primary Care CUHK Institute of Health EquityThe Chinese University of Hong KongHong KongChina School of Life Sciences State Key Laboratory of AgrobiotechnologyInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina Department of Social Work CUHK Institute of Health EquityInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina

Cimex species are ectoparasites that exclusively feed on warm-blooded animals such as birds and *** cimicid species are known to be persistent pests for humans,including the tropical bed bug Cimex hemipterus,common bed bug Cimex lectularius,and Eastern bat bug Leptocimex *** date,genomic information is restricted to the common bed bug ***,which limits understanding their biology and to provide controls of bed bug ***,a chromosomal-level genome assembly of ***(495 Mb[megabase pairs])contained on 16 pseudochromosomes(scaffold N50=34 Mb),together with 9 messenger RNA and small RNA transcriptomes were *** comparison between hemipteran genomes,we found that the tetraspanin superfamily was expanded in the Cimex *** study provides the first genome assembly for the tropical bed bug ***,and offers an unprecedented opportunity to address questions relating to bed bug infestations,as well as genomic evolution to hemipterans more widely.

关键词： bedbug genome microRNA sesquiterpenoid tetraspanin

Crosstalk between degradation and bioenergetics: how autophagy and endolysosomal processes regulate energy production

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Neural Regeneration Research 2025年第3期20卷 671-681页

作者： Angelid Pabon Jagannatham Naidu Bhupana Ching-On wong Department of Biological Sciences Rutgers UniversityNewarkNJUSA

Cells undergo metabolic reprogramming to adapt to changes in nutrient availability, cellular activity, and transitions in cell states. The balance between glycolysis and mitochondrial respiration is crucial for energy production, and metabolic reprogramming stipulates a shift in such balance to optimize both bioenergetic efficiency and anabolic requirements. Failure in switching bioenergetic dependence can lead to maladaptation and pathogenesis. While cellular degradation is known to recycle precursor molecules for anabolism, its potential role in regulating energy production remains less explored. The bioenergetic switch between glycolysis and mitochondrial respiration involves transcription factors and organelle homeostasis, which are both regulated by the cellular degradation pathways. A growing body of studies has demonstrated that both stem cells and differentiated cells exhibit bioenergetic switch upon perturbations of autophagic activity or endolysosomal processes. Here, we highlighted the current understanding of the interplay between degradation processes, specifically autophagy and endolysosomes, transcription factors, endolysosomal signaling, and mitochondrial homeostasis in shaping cellular bioenergetics. This review aims to summarize the relationship between degradation processes and bioenergetics, providing a foundation for future research to unveil deeper mechanistic insights into bioenergetic regulation.

关键词： autophagy bioenergetics endolysosome energy production glycolysis metabolic reprogramming mitochondria

Synthesis of New Monoporphyrinate Lanthanide Complexes for Potential Use in Optical Limiting

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Synthesis of New Monoporphyrinate Lanthanide Complexes for P...

Microglia activation,classification and microglia-mediated neuroinflammatory modulators in subarachnoid hemorrhage

中国化学会全国第十三届大环化学暨第五届超分子化学学术讨论会

作者： Shitao Fu Guijiang Zhou Xunjin Zhu Cheng Ye wai-kwok wong and Zaoying Li ( College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080)

Three monoporphyrinate lanthanide complexes based on 5,10,15,20-tetrakis (p-diphenylaminophenyl)-21H,23H-porphine (H2TDPAPP) were synthesized, and experimental investigations of the nonlinear optical transmittance characteristics at 532 nm show that they are excellent optical limiters with performance comparable or superior to those of the reverse saturable absorption dyes such as fullerene C60 and metal phthalocyanine complexes.

关键词： monoporphyrinate lanthanide complexes synthesis optical limiters

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Neural Regeneration Research 2022年第7期17卷 1404-1411页

作者： Junfan Chen Zhiyuan Vera Zheng Gang Lu wai Yee Chan Yisen Zhang George kwok Chu wong Division of Neurosurgery Department of SurgeryThe Chinese University of Hong KongHong Kong Special Administrative RegionChina Department of Neurosurgery Hainan Branch of Chinese People’s Liberation Army General HospitalSanyaHainan ProvinceChina CUHK-SDU Joint Laboratory on Reproductive Genetics School of Biomedical Sciencesthe Chinese University of Hong KongHong Kong Special Administrative RegionChina Bioinformatics Unit SDIVF R&D CentreHong Kong Science and Technology ParksHong Kong Special Administrative RegionChina Department of Interventional Neuroradiology Beijing Neurosurgical InstituteBeijing Tiantan HospitalCapital Medical UniversityBeijingChina

Subarachnoid hemorrhage is a devastating disease with significant mortality and morbidity,despite advances in treating cerebral *** has been recent progress in the intensive care management and monitoring of patients with subarachnoid hemorrhage,but the results remain ***,the resident immune cells of the brain,are increasingly recognized as playing a significant role in neurological diseases,including subarachnoid *** early brain injury following subarachnoid hemorrhage,microglial activation and neuroinflammation have been implicated in the development of disease complications and *** understand the disease processes following subarachnoid hemorrhage,it is important to focus on the modulators of microglial activation and the pro-inflammatory/anti-inflammatory cytokines and *** this review,we summarize research on the modulators of microglia-mediated inflammation in subarachnoid hemorrhage,including transcriptome changes and the neuroinflammatory signaling *** also describe the latest developments in single-cell transcriptomics for microglia and summarize advances that have been made in the transcriptome-based classification of microglia and the implications for microglial activation and neuroinflammation.

关键词： activation inflammation microglia modulator neuroinflammation sequencing signal pathway single-cell analysis stroke subarachnoid hemorrhage treatment

SMA molecular line survey towards the massive star-forming region G10.6-0.4in W31complex

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Research in Astronomy and Astrophysics 2018年第11期18卷 29-42页

作者： wai-Ho wong Tao An Key Laboratory of Radio Astronomy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China University of Chinese Academy of Sciences Beijing 100049China

Line surveys of complex molecules with millimeter and sub-millimeter telescopes are important for probing the physical and chemical environments of massive star forming regions(MSFRs).We present a molecular line survey with the Submillimeter Array(SMA) in the frequency ranges of 220.3–222.3 GHz and 230.3–232.3 GHz toward G10.6-0.4, the brightest star forming core in the W31 complex. Ninety-nine transitions from 22 molecular species and their isotopologues are identified. The moment 0 images of typical molecules show a compact core which is concentrated at the continuum peak position. Based on the local thermodynamic equilibrium assumption, the molecular line data are modeled. The rotational temperatures of those molecular species range from 96 to 178 K and their column densities range from 2.0×1014to 3.7×1017cm-2. The observational data suggest that all complex molecules are located in a warm environment. Chemical environments of the molecules are discussed. We compared molecular abundances and gas temperatures in G10.6-0.4 with those in other MSFRs, and found that gas temperatures and fractional abundances of specific molecules in G10.6-0.4 are similar to the typical MSFR W51 North, suggesting that there are similar physical and chemical environments in these two MSFRs.

关键词： stars: formation ISM: abundances ISM: individual objects: G10.6-0.4 ISM: molecules radio lines: ISM