2019/03/26 by Antoine G. Godin, Antonio Setaro, Godin, Antoine +12
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · #Advanced Fluorescence Microscopy Techniques #Biological Physics (physics.bio-ph) #Carbon Nanotubes in Composites #FOS: Physical sciences #Molecular Junctions and Nanostructures #Nanofabrication and Lithography Techniques #Optics (physics.optics) #Other Condensed Matter (cond-mat.other)
paper · pdf · doi:10.48550/arxiv.1903.10791
openalex created_date 2023/01/04 · openalex publication_date 2023/11/30 · openalex updated_date 2026/07/14
The design of single-molecule photoswitchable emitters was the first milestone toward the advent of single-molecule localization microscopy that sets a new paradigm in the field of optical imaging. Several photoswitchable emitters have been developed but they all fluoresce in the visible or far-red ranges, missing the desirable near-infrared window where biological tissues are most transparent. Moreover, photocontrol of individual emitters in the near-infrared would be highly desirable for elementary optical molecular switches or information storage elements since most communication data transfer protocols are established in this spectral range. Here we introduce a novel type of hybrid nanomaterials consisting of single-wall carbon nanotubes covalently functionalized with photo-switching molecules that are used to control the intrinsic luminescence of the single nanotubes in the near-infrared (beyond 1 μm). We provide proof-of-concept of localization microscopy based on these bright photoswitchable near-infrared emitters.