A Two-Step Strategy for Fabrication of Biocompatible 3D Magnetically Responsive Photonic Crystals.

ABSTRACT: Extremely stable and biocompatible 3D magnetically responsive photonic crystals (MRPCs) are successfully prepared in aqueous solution. Classic hydrothermal synthesis was applied for preparation of the Fe₃O₄@C core. Modified Stöber method was then employed for synthesis of the different size of Fe₃O₄@C@SiO₂. Unlike the traditional magnetic nanoparticles, the highly negative charged superparamagnetic nanospheres (SMNs), i.e., the double-shell structure Fe₃O₄@C@SiO₂ are capable of rapidly self-assembling into 3D MRPCs with full visible and various colors that can be periodically and reversibly tuned under different kinds of external magnetic fields (EMFs) within 1 s. The assembling behavior and mechanism o

SUBMITTER: Liu H 

PROVIDER: S-EPMC6367226 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature