title: Reversible Photoswitching of Carbon Dots.
abstract: We present a method of reversible photoswitching in carbon nanodots with red emission. A mechanism of electron transfer is proposed. The cationic dark state, formed by the exposure of red light, is revived back to the bright state with the very short exposure of blue light. Additionally, the natural on-off state of carbon dot fluorescence was tuned using an electron acceptor molecule. Our observation can make the carbon dots as an excellent candidate for the super-resolution imaging of nanoscale biomolecules within the cell.
authors.affiliation: School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, 175001, India.
authors.forename: Syamantak
authors.initials: S
authors.lastname: Khan
authors.affiliation: School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, 175001, India.
authors.forename: Navneet Chandra
authors.initials: NC
authors.lastname: Verma
authors.affiliation: School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, 175001, India.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Gupta
authors.affiliation: School of Basic Sciences, Indian Institute of Technology Mandi, Himachal Pradesh, 175001, India.
authors.forename: Chayan Kanti
authors.initials: CK
authors.lastname: Nandi