Tightly yet Dynamically Bound Aliphatic Guanidinium Ligands for Lead Halide Perovskite Nanocrystals.

ABSTRACT: Lead halide perovskites (LHPs) have disrupted the field of visible-range emitting colloidal semiconductor nanocrystals (NCs) owing to their exceptional emissivity as classical and quantum light sources. Their appeal is countered by the stability challenges arising from inherent lattice softness and labile surface ligand bonding. Recent ligand design efforts have drastically improved the structural integrity of LHP NCs by pursuing strongly and statically bound ligands, as found with zwitterionic headgroups. Here, we venture into a new class of cationic ligands featuring guanidinium headgroups, which combine the compactness of primary ammoniums with the deprotonation resistance of quaternary ammoniums. We reasoned that strong yet dynamic ligand binding offers distinct benefits. A library of

SUBMITTER: Berezovska Y 

PROVIDER: S-EPMC12498395 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature