Mussel‐Inspired Polymer Grafting on CsPbBr 3 Perovskite Quantum Dots Enhancing the Environmental Stability

Mussel‐inspired chemistry, motivated by the adhesive proteins secreted by mussels for attachment to wet surfaces, is an emerging technique for manipulating the surface properties of a variety of materials. Here, a facile mussel‐inspired poly( N ‐vinyl pyrrolidone) (PVP) polymer encapsulation with trivial influence on inherent optical properties of perovskite quantum dots (QDs) is demonstrated to efficiently combat the low intrinsic thermal, chemical, and photostability of CsPbBr 3 QDs. The suitability of photopolymer‐processed PVP‐CsPbBr 3 QDs flexible films as color components in white light–emitting devices is substantiated.