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Open Access research that is better understanding work in the global economy...

Strathprints makes available scholarly Open Access content by researchers in the Department of Work, Employment & Organisation based within Strathclyde Business School.

Better understanding the nature of work and labour within the globalised political economy is a focus of the 'Work, Labour & Globalisation Research Group'. This involves researching the effects of new forms of labour, its transnational character and the gendered aspects of contemporary migration. A Scottish perspective is provided by the Scottish Centre for Employment Research (SCER). But the research specialisms of the Department of Work, Employment & Organisation go beyond this to also include front-line service work, leadership, the implications of new technologies at work, regulation of employment relations and workplace innovation.

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Luminescence properties of metallopolymer-gold nanoparticle composites

Forster, Robert J. and Dennany, Lynn and Seery, Michael and Keyes, Tia E. (2005) Luminescence properties of metallopolymer-gold nanoparticle composites. Proceedings of SPIE - The International Society for Optical Engineering, 5825. pp. 609-614. ISSN 0277-786X

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Abstract

Thin films of the metallopolymer [Os(bpy)2 (PVP)10] 2+, where bpy is 2,21-dipyridyl and PVP is poly(4-vinylpyridine), luminesce at 750±12 nm upon excitation at 355nm. The luminescence decay responses can be described by a double exponential decay model in which the limiting lifetimes are 75±14 (population fraction of 0.9) and 35±8 ns (population fraction of 0.1) for films in contact with aqueous 0.1 M H2SO4- Electrochemistry has been used to create well defined concentrations of the luminescence quencher, Os 3+, within the films. Time resolved spectroscopy reveals that both dynamic and static processes contribute to luminescence quenching with a rate constant for electron transfer between the photoexcited Os2+* and the Os3+ centres of 1.3×107 M-1s -1 being observed. Stable gold nanoparticles have been created within the metal lopolymer by the chemical reduction of tetrachloroaurate. These nanocomposite materials exhibit enhanced emission intensity compared to the gold free films.