Self-assembly of peptide-based multi-colour gels triggered by up-conversion rare earth nanoparticles

摘要

UCNPs (NaYF_4) were efficiently converted to a self-assembled network of a low molecular-weight gelator, thus reinforcing the gel structure and leading to the formation of hybrid multi-colour system through excitation by MR light.rnUp-conversion rare earth nanophosphors (UCNPs) consisting of certain lanthanide dopants embedded in a crystalline host lattice can convert low energy near-infrared excitation into emission at visible wavelengths via the sequential absorption of two or more low energy photons. Different colours of visible light can be obtained from different up-conversion nanophosphors when excited by the same IR laser.