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Your search keyword '"Wai Yeung Wong"' showing total 16 results
Start Over Author "Wai Yeung Wong" Journal chemical communications
16 results on '"Wai Yeung Wong"'

1. Seeded-growth self-assembled polymerization of a ferrocene-bearing palladium(<scp>ii</scp>)-terpyridyl bimetallic complex

Author

Zikang Li, Mei-Tung Lau, Jiahua Li, Feng Qiu, Zhengong Meng, and Wai-Yeung Wong

Subjects
Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

A new bimetallic complex containing a 4'-ferrocenyl-(2,2':6',2''-terpyridine)palladium core with polyethylene glycol-based pyridine is applied in seeded-growth self-assembled supramolecular polymerization, which affords nanoribbons with controllable lengths and the process follows a first-order reaction kinetics. This approach is successfully demonstrated for a bimetallic organic complex for the first time.

Published
2022
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2. Soft salts based on platinum(<scp>ii</scp>) complexes with high emission quantum efficiencies in the near infrared region for in vivo imaging

Author

Suyi Liu, Zhu Mao, Peng Cheng Qian, Wai Yeung Wong, Zhenguo Chi, Jun Li, and Yun Ma

Subjects
Materials science, Near-infrared spectroscopy, Metals and Alloys, chemistry.chemical_element, General Chemistry, Photochemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Transplantation, Optical imaging, chemistry, Static electricity, Materials Chemistry, Ceramics and Composites, Cytotoxicity, Platinum, Quantum, Preclinical imaging
Abstract

Two soft salts (S1 and S2) based on platinum(ii) complexes with a near-infrared emission have been designed and synthesized. It has been demonstrated that S2 has a high photostability and a low cytotoxicity, and it has been successfully applied to in vivo imaging for the first time.

Published
2020
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3. Improving the electrochemical performance of Li4Ti5O12 anode by phosphorus reduction at a relatively low temperature

Author

Wai Yeung Wong, Xiang Li, Chang Ming Li, Luyao Liu, Wenwen Deng, Xuyong Feng, Yan-Yan Hu, Lin Hu, and Sean O'Neill

Subjects
Materials science, Phosphorus, Inorganic chemistry, Metals and Alloys, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Anode, Reduction (complexity), chemistry, Reagent, Materials Chemistry, Ceramics and Composites, 0210 nano-technology
Abstract

A novel and efficient method is demonstrated to improve the electrochemical performance of Li4Ti5O12 and metal-oxide anodes. In contrast to other methods, inexpensive red phosphorus powder is used as a reducing reagent, and the reduction is conducted at a relatively low temperature of 400 °C. This method offers a low cost and effective way for Li4Ti5O12 and metal-oxide anode applications.

Published
2018
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4. Aggregation-induced near-infrared emitting platinum(<scp>ii</scp>) terpyridyl complex: cellular characterisation and lysosome-specific localisation

Author

Chunyan Tan, Youming Zhang, Junle Qu, Jiatao Wu, Xin Wang, Yaqiong Li, Jun Song, and Wai Yeung Wong

Subjects
Nanostructure, Organoplatinum Compounds, Biocompatibility, chemistry.chemical_element, Nanoparticle, Poloxamer, 02 engineering and technology, Ligands, 010402 general chemistry, Photochemistry, 01 natural sciences, Fluorescence, Catalysis, HeLa, 2,2'-Dipyridyl, Coordination Complexes, parasitic diseases, Microscopy, PEG ratio, Materials Chemistry, Humans, Particle Size, Fluorescent Dyes, Platinum, Microscopy, Confocal, biology, technology, industry, and agriculture, Metals and Alloys, General Chemistry, 021001 nanoscience & nanotechnology, biology.organism_classification, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Ceramics and Composites, Nanoparticles, Lysosomes, 0210 nano-technology, HeLa Cells
Abstract

A novel near-infrared luminogen (TPE/TPY-Pt-PA/PEG) based on the terpyridyl Pt(ii) complex with a tetraphenylethene periphery is synthesised and characterised. It displays aggregation-induced emission with the formation of self-assembled nanostructures. The nanoparticles fabricated with TPE/TPY-Pt-PA/PEG show excellent biocompatibility with high specificity to lysosomes in HeLa cells.

Published
2018
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5. Highly efficient electroluminescent PtII ppy-type complexes with monodentate ligands

Author

Zhao Feng, Feifan Dang, Jiang Zhao, Boao Liu, Wai Yeung Wong, Yong Wu, Zhaoxin Wu, Guijiang Zhou, and Xiaolong Yang

Subjects
Denticity, Metals and Alloys, 02 engineering and technology, General Chemistry, Electroluminescence, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Chloride, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Ion, chemistry.chemical_compound, chemistry, Polymer chemistry, Pyridine, Materials Chemistry, Ceramics and Composites, medicine, 0210 nano-technology, medicine.drug
Abstract

Functional PtII ppy-type complexes (ppy = 2-phenylpyridine anion) with pyridine and chloride monodentate ligands are prepared, which show high electroluminescence efficiencies.

Published
2017
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6. Aggregation-induced near-infrared emitting platinum(II) terpyridyl complex: cellular characterisation and lysosome-specific localisation.

Author

Jiatao Wu, Yaqiong Li, Chunyan Tan, Xin Wang, Youming Zhang, Jun Song, Junle Qu, and Wai-Yeung Wong

Subjects
METAL complexes, CLUSTERING of particles, MOLECULAR self-assembly, LYSOSOMES, HELA cells, BIOCOMPATIBILITY
Abstract

A novel near-infrared luminogen (TPE/TPY-Pt-PA/PEG) based on the terpyridyl Pt(II) complex with a tetraphenylethene periphery is synthesised and characterised. It displays aggregation-induced emission with the formation of self-assembled nanostructures. The nanoparticles fabricated with TPE/TPY-Pt-PA/PEG show excellent biocompatibility with high specificity to lysosomes in HeLa cells. [ABSTRACT FROM AUTHOR]

Published
2018
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7. Synthesis and antitumor activity of a series of osmium(vi) nitrido complexes bearing quinolinolato ligands

Author

Gui Jian Liu, Shie-Ming Peng, Tai-Chu Lau, Kenneth K.K. Lau, Wen Xiu Ni, Yimin Liang, Wai-Lun Man, Yun Wah Lam, Wai Yeung Wong, Chi-Fai Leung, and Quan Tang

Subjects
Cell Survival, Stereochemistry, chemistry.chemical_element, Antineoplastic Agents, Apoptosis, Ligands, Ferric Compounds, Catalysis, Inhibitory Concentration 50, Coordination Complexes, Materials Chemistry, Humans, Molecule, Inhibitory concentration 50, Osmium, Cell Proliferation, Antitumor activity, Molecular Structure, Chemistry, Metals and Alloys, Hep G2 Cells, General Chemistry, Flow Cytometry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Ceramics and Composites
Abstract

A series of osmium(VI) nitrido complexes supported by quinolinolato ligands have been prepared and they exhibit promising in vitro anti-cancer activities. These results establish that Os(VI)≡N is a potentially versatile and promising platform for the design of a variety of high-valent anti-cancer drugs.

Published
2013
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8. Highly selective red- and green-emitting two-photon fluorescent probes for cysteine detection and their bio-imaging in living cells

Author

Wai Yeung Wong, Yong Liu, Wentao Ai, Xiaoqiang Yu, Fang Miao, Yuming Sun, Zhiguang Yang, Ning Zhao, Yuanhong Zhang, Jing Zhi Sun, Guofen Song, Xin Liu, and Xiaoyuan Shen

Subjects
chemistry.chemical_classification, Homocysteine, Metals and Alloys, General Chemistry, Glutathione, Highly selective, Fluorescence, Catalysis, Dithiothreitol, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Amino acid, chemistry.chemical_compound, Microscopy, Fluorescence, Multiphoton, Biochemistry, chemistry, Two-photon excitation microscopy, Materials Chemistry, Ceramics and Composites, Humans, Cysteine, Fluorescent Dyes, HeLa Cells
Abstract

Two highly selective two-photon fluorescent probes for cysteine over homocysteine, N-acetyl-L-cysteine, dithiothreitol, glutathione and other amino acids, and their fluorescent imaging in living cells have been shown.

Published
2012
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9. A strong two-photon induced phosphorescent Golgi-specific in vitro marker based on a heteroleptic iridium complex

Author

Yu Man Ho, Hoi Lam Tam, Wai Ming Kwok, Chris Tsz Leung Chan, J. K. Feng, Xiaoru Ren, Hoi-Kuan Kong, Aimin Ren, Ka-Leung Wong, Kelvin Sze-Yin Leung, Wai Yeung Wong, Michael H.W. Lam, and Cheuk Lam Ho

Subjects
Absorption (pharmacology), Golgi Apparatus, chemistry.chemical_element, Iridium, Photochemistry, Catalysis, HeLa, symbols.namesake, Two-photon excitation microscopy, Organometallic Compounds, Materials Chemistry, Humans, Cytotoxicity, Photons, Luminescent Agents, biology, Metals and Alloys, Absorption cross section, General Chemistry, Golgi apparatus, biology.organism_classification, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Ceramics and Composites, symbols, Phosphorescence, HeLa Cells
Abstract

A new heteroleptic iridium complex demonstrated low cytotoxicity and near-infrared excitation (via two-photon absorption) for target-specific in vitro Golgi imaging in various cell lines (HeLa and A549 cells) with two-photon absorption cross section (~350 GM) in DMSO.

Published
2012
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10. Duplicating 'sunlight' from simple WOLEDs for lighting applications

Author

Wai Yeung Wong, Lixiang Wang, Dongge Ma, Guijiang Zhou, Qi Wang, and Cheuk Lam Ho

Subjects
Sunlight, Brightness, Color quality, Chemistry, business.industry, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Metals and Alloys, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Optics, Materials Chemistry, Ceramics and Composites, White light, Optoelectronics, Quantum efficiency, business, ComputingMilieux_MISCELLANEOUS
Abstract

Simple single-dopant white organic light-emitting devices (WOLEDs) with optimized efficiency/color quality/brightness trade-offs are developed; the white light produced shows the best color quality ever exhibited by WOLEDs at very high brightness, and is even able to duplicate the natural sunlight source.

Published
2009
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11. Oligo(fluorenyleneethynylenegermylene)s and their metallopolymers

Author

Albert W. M. Lee, Jianxin Shi, Wai Yeung Wong, Suk Yue Poon, and Kok Wai Cheah

Subjects
Models, Molecular, Molecular Structure, Germanium, Polymers, Chemistry, Metals and Alloys, General Chemistry, Crystallography, X-Ray, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Metals, Heavy, Polymer chemistry, Organometallic Compounds, Materials Chemistry, Ceramics and Composites, Phosphorescence, Platinum
Abstract

Oligo(fluorenyleneethynylenegermylene)s and their polyplatinynes are synthesized and photophysically characterized; inclusion of heavy germylene bridges greatly boosts the phosphorescence decay rate in metallopolymers.

Published
2004
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12. A lysosome-specific two-photon phosphorescent binuclear cyclometalated platinum(n) probe for in vivo imaging of live neurons.

Author

Yu-Man Ho, Bennett Au, Ngan-Pan, Ka-Leung Wong, Chan, Chris Tsz-Leung, Wai-Ming Kwok, Ga-Lai Law, Kwong-Kit Tang, Wai-Yeung Wong, Chi-Him Eddie Ma, and Michael Hon-Wah Lam

Subjects
PLATINUM compound synthesis, NEURON analysis, PROTON transfer reactions, METALLACYCLES, NEURODEGENERATION, PHOSPHORIMETRY, LYSOSOMES
Abstract

Real-time tracking of fast axonal transport of acidic vesicles in live adult mouse dorsal root ganglion (DRG) and cortical neurons in brain slices was visualized by the use of binuclear cycloplatinated complexes, {[Pt(L1)]2(μ-dppm)}2+(1) and {[Pt(L1)]2(μ-dppm)}2+(2), as lysosome-specific two-photon imaging probes. [ABSTRACT FROM AUTHOR]

Published
2014
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13. Duplicating “sunlight” from simple WOLEDs for lighting applicationsElectronic supplementary information (ESI) available: Syntheses and experimental procedures, photophysical and crystal data, WOLED performance data and relevant photos. CCDC 716163 and 716164. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b904382a

Author

Guijiang Zhou, Qi Wang, Cheuk-Lam Ho, Wai-Yeung Wong, Dongge Ma, and Lixiang Wang

Subjects
LIGHT emitting diodes, LIGHT sources, SUNSHINE, PHOSPHORS, FLUORIMETRY, LIGHTING, CRYSTALS
Abstract

Simple single-dopant white organic light-emitting devices (WOLEDs) with optimized efficiency/color quality/brightness trade-offs are developed; the white light produced shows the best color quality ever exhibited by WOLEDs at very high brightness, and is even able to duplicate the natural sunlight source. [ABSTRACT FROM AUTHOR]

Published
2009
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14. Supramolecular double helical Cu(i) complexes for asymmetric cyclopropanation.

Author

Chi-Tung Yeung, Ho-Lun Yeung, Chui-Shan Tsang, Wai-Yeung Wong, and Hoi-Lun Kwong

Subjects
REACTION time, NANOCRYSTALS, NANOPARTICLES, NANOSTRUCTURED materials
Abstract

Chiral double-stranded helicates, formed between Cu(i) ion and C2-symmetric oligopyridines, were used for catalytic asymmetric cyclopropanation of alkenes; low catalyst loadings (0.2 mol%), high TONs (up to 404) and short reaction times (30–60 min) were achieved with [Cu2L2]OTf2(L = chiral C2-symmetric terpyridine). [ABSTRACT FROM AUTHOR]

Published
2007
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