Temperature response of defect photoluminescence in locally functionalized single-walled carbon nanotubes.

ABSTRACT: In vivo temperature monitoring has garnered significant attention for studying biological processes such as cellular differentiation and enzymatic activity. However, current nanoscale thermometers utilizing photoluminescence (PL) in the visible to first near-infrared (NIR-I) region based on organic dyes, quantum dots, and lanthanide-doped nanoparticles face challenges in terms of tissue penetration and sensitivity. In this study, we investigated the temperature dependence of PL (1140 nm) and PL (1260 nm) of locally functionalized single-walled carbon nanotubes (lf-SWCNTs) that emit in the second near-infrared region (NIR-II). The effects of interfacial dielectric environments (hydrophobic surfactant dispersion vs. hydrophilic gel coating), defect density, and nanotube length

SUBMITTER: Hamano R 

PROVIDER: S-EPMC11801182 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature