Chem. Commun., 2025, Accepted Manuscript DOI: 10.1039/D5CC03997E, Communication Yanqiu Du, Yujiong Yao, Pingfan Wang, Yuhui Wang, Xuejie Liu, Haidong Li, Nan Yan Surface functionalization of colloidal nanocrystals (NCs) with ion-specific polymeric ligands enables programmable modulation of ligand hydrophilicity-hydrophobicity via the Hofmeister effect. This control drives NCs rearrangement and reorientation, triggering a directed...