Sandwich approach toward inverse opals with linear and nonlinear optical functionalities

A polyaniline inverse opal/nanofiber network film fabricated at an air–water interface

An air–water interface polymerization method for producing Janus polyaniline films with inverse opal and nanofiber network at its two sides.

Two-dimensional inverse opal hydrogel for pH sensing

Two-dimensional (2D) inverse opal hydrogels with well-ordered macroporous monolayer on the surface are prepared by polymerization of hydrogel monomers on 2D array templates and show a prompt response to pH stimuli by the change of diffraction color.