# Combining Breath Figures with Mussel-Inspired Chemistry: An Easy Route to Finely Tunable Microporous Functional Surfaces

## TL;DR

This paper introduces a simple and fast method to create microporous surfaces with tunable properties for sensing and environmental applications.

## Contribution

A novel, scalable method combining breath figures and mussel-inspired chemistry to create functional microporous films.

## Key findings

- The breath figure process parameters can be systematically controlled to tune porosity and 3D structure.
- Polydopamine-assisted metallization enables plasmonic and catalytic functionalities on the surfaces.
- The method is ultrafast, straightforward, and suitable for large-scale production.

## Abstract

Microporous surfaces
are widely explored for their potential in
applications such as sensing, catalysis, and photonics. However, achieving
well-defined and reproducible porous architectures often requires
complex or highly optimized fabrication techniques. In this work,
we present a straightforward, ultrafast and scalable method for producing
functional microporous films by combining spin-coated breath figures
of cellulose acetate butyrate with polydopamine-assisted metallization.
By systematically investigating the parameters influencing the breath
figure process, we demonstrate precise control over the porosity and
three-dimensional structure of the resulting films. The incorporation
of polydopamine enables the subsequent formation of metal nanoparticles,
imparting plasmonic and catalytic functionalities to the surfaces.
This versatile platform offers new opportunities for the development
of multifunctional materials tailored for advanced sensing and environmental
applications.