Abstract
The inner and outer surfaces of a nanotube made of either carbon or boron nitride materials can be functionalized to tailor the chemical and optical properties of the assembly. Our studies on the optical properties of dyes encapsulated in nanotubes show for instance enhancement effects in both Raman and fluorescence spectroscopies, which are interesting for making optical nanoprobes for bio-imaging. Chemical functionalization of the outer wall has also been effective in promoting specific chemical interaction with a host, such as a biomarker. Here we will more specifically review our recent progress on the nanotube-based nanohybrids and focus the discussion on the case of the boron-nitride nanotubes for optical imaging. More particularly, we have made advances towards the preparation of boron-nitride nanotube nanohybrids for fluorescence imaging with visible and near-infrared emissions. Recent results on the outer functionalization to work more effectively in biological media and on the aggregation effects of encapsulated dyes probed optically in different conditions will be discussed.This work was done in collaboration with E. Gaufrès, C. Allard, S. K. Mal, N. Tang, R. Nascimento, C. David, L. Durate, Louis Gaboury and S. Blais-Ouellette
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