Journal
ACS PHOTONICS
Volume 2, Issue 12, Pages 1755-1762Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.5b00458
Keywords
amyloid fibrils; lysozyme and insulin proteins; stimulated emission; random lasing; laser dye; rhodamine 6G; biolaser; biomaterial; nanotemplates; molecular crowding
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Funding
- Swedish Research Council (VR)
- Polish National Science Centre [DEC-2013/09/D/ST4/03780]
- Department of the Navy, Office of Naval Research Award [N00014-14-1-0580]
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Amyloid fibrils are excellent bioderived nano-templates for controlling molecular and optical properties of small molecules such as organic dyes. Here we demonstrate that two representative fibril-forming proteins, lysozyme and insulin, from the amyloids family can determine the optical signature of rhodamine 6G. Their structural variety leads to a unique molecular arrangement of dye aggregates on the biotemplate surface. This significantly influences the light amplification threshold as well as the stimulated emission profiles, which show remarkable broadband wavelength tunability. We show in addition that amyloid fibrils can be potentially used in constructing broadband emission biolasers.
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