Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 4, Issue 44, Pages 7130-7137Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tb02071b
Keywords
-
Categories
Funding
- Natural Science Foundation of China [21375013, 21235001, 21475017]
- Fundamental Research Funds for the Central Universities [N130105002, N140505003, N141008001, N150502001]
Ask authors/readers for more resources
Carbon dots are prepared using a green hydrothermal approach with dehydrated shiitake mushroom as the sole carbon source without any additives (these carbon dots are shortly termed as MCDs). Carbonization, surface functionalization and nitrogen doping are involved in the hydrothermal treatment and no further modification or surface passivation is necessary. The derived MCDs are nitrogen-doped, oxygen-rich with hydroxyl, carboxyl and amine groups, with a diameter of ca. 4.2 nm. MCDs exhibit cell permeable properties and a distinct pH-sensitive/excitation-dependent photoluminescence emission feature within pH 4.0-8.0, providing an optical probe for intracellular pH sensing and multicolor imaging of live HeLa cells. MCDs also show a strong fluorescence response to hemin, which facilitates sensitive fluorescent sensing of hemin with a detection limit of 120 nmol L-1.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available