Controlling the Formation of Phospholipid Monolayer, Bilayer, and Intact Vesicle Layer on Graphene

Seyed R. Tabaei, Wei Beng Ng, Sang-Joon Cho, Nam-Joon Cho

Research output: Contribution to journalArticlepeer-review


Exciting progress has been made in the use of graphene for bio- and chemical sensing applications. In this regard, interfacing lipid membranes with graphene provides a high-sealing interface that is resistant to nonspecific protein adsorption and suitable for measuring biomembrane-associated interactions. However, a controllable method to form well-defined lipid bilayer coatings remains elusive, and there are varying results in the literature. Herein, we demonstrate how design strategies based on molecular self-assembly and surface chemistry can be employed to coat graphene surface with different classes of lipid membrane architectures. We characterize the self-assembly of lipid membranes on CVD-graphene using quartz crystal microbalance with dissipation, field-effect transistor, and Raman spectroscopy. By employing the solvent-assisted lipid bilayer (SALB) method, a lipid monolayer and bilayer were formed on pristine and oxygen-plasma-treated CVD-graphene, respectively. On these surfaces, vesicle fusion method resulted in formation of a lipid monolayer and intact vesicle layer, respectively. Collectively, these findings provide the basis for improved surface functionalization strategies on graphene toward bioelectronic applications.
Original languageEnglish
Pages (from-to)11875–11880
JournalACS Applied Materials and Interfaces
Issue number18
Early online date27 Apr 2016
Publication statusPublished - 11 May 2016
Externally publishedYes


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