Ontology highlight
ABSTRACT:
SUBMITTER: Liu KK
PROVIDER: S-EPMC6724478 | biostudies-literature | 2019 Sep
REPOSITORIES: biostudies-literature
Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20190715 17
Red/near-infrared (NIR) emissive carbon nanodots (CNDs) with photoluminescence (PL) quantum yield (QY) of 57% are prepared via an in situ solvent-free carbonization strategy for the first time. 1-Photon and 2-photon cellular imaging is demonstrated by using the CNDs as red/NIR fluorescence agent due to the high PL QY and low biotoxicity. Further study shows that the red/NIR CNDs exhibit multiphoton excited (MPE) upconversion fluorescence under excitation of 800-2000 nm, which involves three NIR ...[more]