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Updated: Apr 6, 2026

Bridging the Bio-Electronic Interface with Biofabrication

Bridging the Bio-Electronic Interface with Biofabrication

Published on: June 6, 2012

Bio-inspired multifunctional catecholic assembly for photo-programmable biointerface.

Chun-Jen Huang¹, Lin-Chuan Wang²

¹Graduate Institute of Biomedical Engineering, National Central University, Jhong-Li, Taoyuan 320, Taiwan; Chemical & Materials Engineering Department, National Central University, Jhong-Li, Taoyuan 320, Taiwan.

Colloids and Surfaces. B, Biointerfaces

|July 25, 2015

Summary

This summary is machine-generated.

Researchers developed a novel mussel-inspired material, sulfobetaine nitrodopamine (SB-nDA), for photoresponsive biointerfaces. This material effectively prevents bacterial and protein adhesion and can be controlled by UV light, showing promise for nanomedicine applications.

Keywords:

Bio-inspired materials Biointerfaces Catecholic chemistry Self-assembled monolayers Zwitterionic materials

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Published on: November 14, 2015

Area of Science:

Biomaterials Science
Surface Chemistry
Nanomedicine

Background:

Developing advanced biointerfaces is crucial for preventing device contamination and enabling targeted therapies.
Mussel-inspired chemistry offers robust adhesion and versatile functionalization strategies.
Zwitterionic materials provide excellent antifouling properties, resisting non-specific biomolecule adsorption.

Purpose of the Study:

To synthesize and characterize a novel mussel-inspired zwitterionic molecule, sulfobetaine nitrodopamine (SB-nDA).
To create a photoresponsive biointerface on TiO₂ using SB-nDA for controlled biofouling resistance.
To evaluate the antifouling performance and light-triggered responsiveness of the SB-nDA interface.

Main Methods:

Synthesis of sulfobetaine nitrodopamine (SB-nDA) by combining sulfobetaine and o-nitrophenyl moieties.
Formation of thin SB-nDA films on TiO₂ substrates via a pH transition method.
Characterization using ellipsometry, contact angle goniometry, AFM, XPS, and QCM-D.
Evaluation of bacterial (S. epidermidis, P. aeruginosa) and protein adhesion under UV irradiation.

Main Results:

A compact, thin SB-nDA film was successfully formed on TiO₂.
SB-nDA films demonstrated over 95% resistance to bacterial adhesion compared to bare TiO₂.
Antifouling performance against proteins was comparable to established surface ligands.
UV irradiation enabled spatiotemporal control over bioinertness, modulating bacterial and protein adsorption.

Conclusions:

SB-nDA provides a versatile platform for creating photoresponsive antifouling biointerfaces.
Catecholic chemistry allows programmable tailoring of interfacial properties for advanced applications.
This technology holds potential for light-guided targeting in nanomedicine and biomedical devices.