Chiral nematic mesoporous silica films enabling multi-colour and on–off switchable circularly polarized luminescence

Abstract

Freestanding chiral nematic mesoposous silica films encapsulating luminophores enabled right-handed circularly polarized luminescence (R-CPL) with g_lum values of up to −0.38. The tuning of the R-CPL band and multi-colour R-CPL were found to be realistic. Reversible on–off switching of R-CPL in response to the chemical environment was demonstrated.