Multi-color emission in upconversion nanoparticles usually requires multiple wavelengths to excite different lanthanide ions. Here the authors show color tuning from a single excitation wavelength ...

School of Chemistry, Xi’an Key Laboratory of Sustainable Polymer Materials, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China ...

By nature, each fluorescent dye exhibits a unique absorbance and emission spectra, resulting from the change in energy states of electrons when the fluorophore is excited. These absorbance and ...

Easter's on its way, and you know what that means: It's time to dye eggs. If you grew up dyeing Easter eggs using store-bought kits, you'll remember the telltale vinegary scent, plastic gloves, and ...