Self-protonating, plasma polymerized, superimposed multi-layered biomolecule nanoreservoir as blood-contacting surfaces

Wenxuan Wang, Lei Lu, Ho Pan Bei, Xiangyang Li, Zeyu Du, Manfred F. Maitz, Nan Huang, Qiufen Tu, Xin Zhao, Zhilu Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


Blood-contacting devices have emerged in the 21st century as the go-to clinical treatment for severe cardiovascular diseases. Due to their poor hemocompatibility, many coatings have been developed to improve their biocompatibility with limited success due to the lack of robustness in biomolecule conjugation. In this paper, we propose a new self-protonating, plasma polymerized, superimposed multi-layered nanoreservoir coating for immobilization of charged biomolecules, and demonstrated its high surface charge density, loading capabilities and most importantly, bioactivity retention of biomolecules. Using heparin as a model therapeutic, we demonstrated the advantages of our coating strategy through in vitro and ex vivo means. Our findings will open a new path in clinical device coating strategies in biomolecule functionalization to benefit many patients worldwide.

Original languageEnglish
Article number128313
JournalChemical Engineering Journal
Publication statusPublished - 15 Apr 2021


  • Biomoleculenanoreservoir
  • Blood contacting surface
  • Plasma polymerization
  • Self-protonation

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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