Enhanced Phosphorescence of Carbon Nanodots via Double Confinement for 3D Artworks with Long Emission Lifetimes

Phosphorescent materials as block elements to build artwork incorporating the time and emission, enable them with spectacular lighting effects. In this work, enhanced phosphorescence of carbon nanodots (CNDs) is demonstrated via double confinement strategy, which silica and epoxy resin are used as the first and the second order confinement layer. The multi‐confined CNDs show an enhanced phosphorescence quantum yield up to 16.4%, with enduring emission lifetime up to 1.44 s. Delicately, the plasticity of the epoxy resin enables them easily to be designed for 3D artworks with long emission lifetimes in different shapes. The efficient and eco‐friendly phosphorescent CNDs may arouse intense interest both in the academic community and markets. Enhanced phosphorescence of carbon nanodots (CNDs) is demonstrated via double confinement strategy, the plasticity of the epoxy resin enables them easily to be designed for 3D artworks with long emission lifetimes in different shapes.