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Your search keyword '"Lam, Michael H.W."' showing total 127 results
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127 results on '"Lam, Michael H.W."'

37. A heterobimetallic ruthenium(II)-copper(II) donor-acceptor complex as a chemodosimetric ensemble for selective cyanide detection

Author

Cheuk-Fai Chow, Lam, Michael H.W., and Wai-Yeung Wong

Subjects
Electron donor-acceptor complexes -- Research, Ligands -- Research, Copper compounds -- Chemical properties, Ruthenium -- Chemical properties, Chemistry
Abstract

A new heterobimetallic Ru(II)-Cu(II) donor-acceptor complex is synthesized and characterized. A suitable choice of metal centers and coordination ligands, can fine-tune heterobimetallic donor-acceptor complexes to produce sensitive chemodosimetric responses to specific analytes.

Published
2004

40. Polybrominated Diphenyl Ethers (PBDEs) Alter Larval Settlement of Marine Intertidal Organisms across Three Phyla via Reducing Bacterial Abundance on the Biofilms

Author

Chiu, Jill Man Ying, Po, Beverly H.K., Chan, Christine Y.S., Lam, Michael H.W., Qian, Peiyuan, Wu, Rudolf Shiu Sun, Chiu, Jill Man Ying, Po, Beverly H.K., Chan, Christine Y.S., Lam, Michael H.W., Qian, Peiyuan, and Wu, Rudolf Shiu Sun

Abstract

Polybrominated diphenyl ethers (PBDEs) have been widely used as flame retardants over the last three decades, and are now ubiquitous in the marine environment. While the harmful effects of PBDEs on the abnormal development and reproductive impairment in mammals and fish are well documented, the effects on marine invertebrates remain virtually unknown. Using three model intertidal species accross three phyla, including the polychaete Hydroides elegans (Phylum Annelida), the gastropod Crepidula onyx (Phylum Mollusca), and the barnacle Balanus amphitrite (Phylum Arthopoda), this study demonstrated that (a) chronic exposure to BDE-47 (at spiking concentrations up to 1000 ng L-1) throughout the entire larval stage did not affect settlement, development or growth of all three species per se, despite bioaccumulation was dearly evident (measured body burden ranging from approximately 7000 to 13 000 ng BDE-47 g(-1) lipid), and (b) BDE-47, at measured concentrations of 15 and 113 ng g(-1) lipid, reduced the bacterial abundance in biofilms and resulted in a concomitant change in larval settlement pattern of all the model intertidal species across three phyla.

Published
2012

41. Synthesis and X-ray crystal structure of a triple-stranded helical supramolecular complex formed between tris(3-(pyridin 2-yl)pyrazole)ruthenium(II) and copper(I)

Author

Lam, Michael H.W., Cheung, Samuel T.C., Fung, Ka-Man, and Wong, Wing-Tak

Subjects
Ruthenium -- Research, Chemistry
Abstract

An experiment was conducted to describe the synthesis of a triple-stranded ruthenium helicate from [Ru(py-pzH)3]-(ClO4)2. The absorption band of the acetonitrile solution of [Ru(py-pzH)3]-(Clo4)2 was observed to be at 400 nanometer. A C3 rotation axis was also seen in the triple-stranded ruthenium helicate. The stability of ruthenium helicate in solution was indicated by the simplicity and consistency of its nuclear magnetic resonance spectrum.

Published
1997

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