Peveler, WJ;
Noimark, S;
Al-Azawi, H;
Hwang, GB;
Crick, CR;
Allan, E;
Edel, JB;
... Parkin, IP; + view all
(2017)
Covalently attached anti-microbial surfaces using BODIPY: Improving efficiency and effectiveness.
ACS Applied Materials & Interfaces
, 10
(1)
pp. 98-104.
10.1021/acsami.7b13273.
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Abstract
The development of photo-activated antimicrobial surfaces that kill pathogens through the production of singlet oxygen has proved very effective in recent years, with applications in medical devices and hospital touch surfaces, to improve patient safety and well-being. However, many of these surfaces require a swell-encapsulation-shrink strategy to incorporate the photoactive agents in a polymer matrix, and this is resource intensive, given that only the surface fraction of the agent is active against bacteria. Furthermore, there is a risk that the agent will leach from the polymer, and thus raises issues of biocompatibility and patient safety. Here we describe a more efficient method of fabricating a silicone material with a covalently attached monolayer of photo-activating agent that uses heavy-atom triplet sensitization for improved singlet oxygen generation and corresponding antimicrobial activity. We use boron-dipyrromethane (BODIPY) with a reactive end group and incorporated Br atoms, covalently attached to polydimethylsiloxane (PDMS). We demonstrate the efficacy of this material in producing singlet oxygen and killing S. aureus and suggest how it might be easily modifiable for future antimicrobial surface development.
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