Innenrücktitelbild: Constructing Interfacial Energy Transfer for Photon Up‐ and Down‐Conversion from Lanthanides in a Core–Shell Nanostructure (Angew. Chem. 40/2016). (11th August 2016) - Zhou, Bo; Tao, Lili; Chai, Yang; Lau, Shu Ping; Zhang, Qinyuan; Tsang, Yuen Hong