Fluorescence is widely used in biology and medicine for the detection, quantification and imaging of various structures. However, to detect rare “markers” remains a challenge, and various amplification options are under investigation. One of the directions is to use the physical principle of random lasers and the multiple scattering of light. As fluorescence detection is targeted to biomedical applications, non-toxic components should be used. So-called biological lasers that use biological conditions is now a hot topic.
In this work we want to use new fully bio-based materials, bio-aerogels, to act as fluorescence amplifiers. Bio-aerogels are ultra-light, highly porous and nanostructured materials based on natural polymers.
The goal of this work is to prepare bio-aerogels and test them as fluorescence amplifiers. In this internship, the student will prepare aerogels from cellulose and starch incorporating particles with very high refractive index. Density, morphology and specific surface area of aerogels will be characterised. Fluorescence intensity will then be measured and correlated with aerogel properties.

Publié le 25/07/2021