Polymer Zwitterions for Stabilization of CsPbBr3 Perovskite Nanoparticles and Nanocomposite Films. (20th April 2020)

• Record Type: Journal Article
• Authors: Kim, Hyunki; Hight‐Huf, Nicholas; Kang, Ji‐Hwan; Bisnoff, Phoebe; Sundararajan, Suvin; Thompson, Theo; Barnes, Michael; Hayward, Ryan C.; Emrick, Todd
• Is Part Of: Angewandte Chemie. Volume 132:Number 27(2020)
• Page Start: 10894
• Page End: 10898
• Publication Date: 2020-04-20
• Subjects: nanocomposites -- Perovskite nanoparticles -- polymer ligands -- polymer zwitterions -- time-resolved photoluminescence; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201916492
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Functional polymers with sulfobetaine or phosphorylcholine zwitterions as pendent groups are demonstrated as both ligands and host matrices for CsPbBr3 perovskite nanoparticles (PNPs). These polymers produce nanocomposite films with excellent NP dispersion, optical transparency, and impressive resistance to NP degradation upon exposure to water. Multidentate interactions of the zwitterion‐containing copolymers with the PNPs induce dispersed or weakly aggregated nanocomposite morphologies, depending on the extent of zwitterionic functionality in the polymer. Incorporating additional functionality into the polymers, such as benzophenone pendent groups, yields lithographically patternable films, while time‐resolved photoluminescence measurements provide insight into the electronic impact of PNPs in zwitterionic polymer matrices. Abstract : Functional polymer zwitterions are demonstrated as both ligands and host matrices for CsPbBr3 perovskite nanoparticles. These polymers produce nanocomposite films with excellent nanoparticle dispersion and optical transparency, and impressive resistance to degradation upon exposure to water. Incorporating additional functionality into the polymers, such as benzophenone groups, yields lithographically patternable films.