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Title: Modification of porous silicon rugate filters through thiol-yne photochemistry

Porous silicon (PSi) has a considerable potential as biosensor platform. In particular, the ability to modify the surface chemistry of porous silicon is of interest. Here we present a generic method to modify the surface of porous silicon through thiol-yne photochemistry initiated by a radical initiator. Firstly, a freshly etched porous silicon substrate is modified through thermal hydrosilylation with 1,8-nonadiyne to passivate the surface and introduce alkyne functionalities. The alkyne functional surface could then be further reacted with thiol species in the presence of a radical initiator and UV light. Functionalization of the PSi rugate filter is followed with optical reflectivity measurements as well as high resolution X-ray photoelectron spectroscopy (XPS)
Authors:
; ;  [1] ;  [2]
  1. Australian Centre for Nanomedicine and School of Chemistry, University of New South Wales, Sydney 2052 (Australia)
  2. School of Physics, University of New South Wales, Sydney 2052 (Australia)
Publication Date:
OSTI Identifier:
22266030
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1586; Journal Issue: 1; Conference: NNS2013: 5. nanoscience and nanotechnology symposium, Surabaya (Indonesia), 23-25 Oct 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; POROUS MATERIALS; SILICON; SUBSTRATES; SURFACES; THIOLS; X-RAY PHOTOELECTRON SPECTROSCOPY