Carbon dots preserve strong blue emission in both aqueous and solid states and their application in intracellular temperature sensing and white light-emitting diodes

In situ wrapping carbon dots towards robust, durable and transparent tri-layer films with precise spectral conversion and excellent self-cleaning properties

“…In addition, the slightly longer lifetimes and decreased k nr of solid CD-polymers might be caused by the reduction of nonradiative transition and energy loss arising from the interaction of CDs and ethanol. 40 On the other hand, the resonance energy transfer (RET) and direct p-p interaction between CDs in the aggregate state could be effectively avoided due to the spacing and steric hindrance provided by the polymers (Fig. 3f).…”

Facile Microwave Synthesis of Efficient Green Emissive Carbon Dots Powder and Their Application in Visible Light Communication and White Light Emitting Devices

“…As seen from Figure 5a, the emission intensity de-creases with increasing temperature, which is mainly due to the increase in the number of surface traps/defects in the carbon dots with increasing temperature, which in turn accelerates the nonradiative transition of the excited electrons. [40][41][42] The emission intensity of the CDs at 437 K retains 55% of its initial value at room temperature (287 K), suggesting the CDs have good thermal stability. To extract the activation energy (E a ) required for activating the non-radiative channel, we plot in Figure 5b the emission intensity as a function of inverse temperature.…”