منابع مشابه
Reversible Photoswitching of Carbon Dots
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 obser...
متن کاملReversible Fluorescence Photoswitching in DNA
We describe the engineering of reversible fluorescence photoswitching in DNA with high-density substitution, and its applications in advanced fluorescence microscopy methods. High-density labeling of DNA with cyanine dyes can be achieved by polymerase chain reaction using a modified DNA polymerase that has been evolved to efficiently incorporate Cy3- and Cy5-labeled cytosine base analogues into...
متن کاملStructural basis for reversible photoswitching in Dronpa.
Dronpa is a novel GFP-like fluorescent protein with exceptional light-controlled switching properties. It may be reversibly switched between a fluorescent on-state and a nonfluorescent off-state by irradiation with light. To elucidate the molecular basis of the switching mechanism, we generated reversibly switchable Dronpa protein crystals. Using these crystals we determined the elusive dark-st...
متن کاملPhotoswitching in azafullerene encapsulated single-walled carbon nanotube FET devices.
The photoinduced electrical transport properties of C(59)N@SWNTs are investigated by assembling them into FET devices. Our findings demonstrate that azafullerene molecules inside SWNTs make nanotube FET devices very sensitive to UV light exposure by the decrease of source-drain current upon light exposure. The photoswitching effect is found to be dependent on wavelengths of light and becomes ne...
متن کاملSpectroscopic characteristics of carbon dots (C-dots) derived from carbon fibers and conversion to sulfur-bridged C-dots nanosheets.
We synthesized sub-10 nm carbon nanoparticles (CNPs) consistent with photoluminescent carbon dots (C-dots) from carbon fiber starting material. The production of different C-dots fractions was monitored over seven days. During the course of the reaction, one fraction of C-dots species with relatively high photoluminescence was short-lived, emerging during the first hour of reaction but disappea...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2015
ISSN: 2045-2322
DOI: 10.1038/srep11423