Supramolecular-micelle-directed preparation of uniform magnetic nanofibers with length tunability, colloidal stability and capacity for surface functionalization

Abstract

Fiber-like magnetic nanostructures (MNs) with unique shape- and magnetism-related properties have attracted growing interest due to their promising potential as diagnostic, therapeutic or/and theranostic agents in biomedicine. Herein, we report a general and efficient strategy to prepare fiber-like MNs with length tunability, colloidal and morphological stability and capacity for functionalization by the combination of living crystallization driven self-assembly of π-conjugated oligo(p-phenylenevinylene)-based copolymers, hydrogen-bonding/electrostatic interaction and silica chemistry. This work opens a new avenue to fabricate fiber-like MNs with diverse functionalities for broad applications.