Surface-Enhanced Raman Spectroscopy of Fluid-Supported Lipid Bilayers | Zendy

Ian Bruzas | Zendy; Bruce E. Brinson | Zendy; Zohre Gorunmez | Zendy; William Lum | Zendy; Emilie Ringe | Zendy; Laura Sagle | Zendy

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Surface-Enhanced Raman Spectroscopy of Fluid-Supported Lipid Bilayers

Author(s) -

Ian Bruzas,

Bruce E. Brinson,

Zohre Gorunmez,

William Lum,

Emilie Ringe,

Laura Sagle

Publication year - 2019

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.9b09988

Subject(s) - lipid bilayer , materials science , fluorescence recovery after photobleaching , bilayer , raman spectroscopy , surface enhanced raman spectroscopy , photobleaching , substrate (aquarium) , nanotechnology , membrane , surface plasmon resonance , model lipid bilayer , biological membrane , ellipsometry , fluorescence , lipid bilayer phase behavior , nanoparticle , thin film , raman scattering , chemistry , optics , biochemistry , physics , oceanography , geology

Supported lipid bilayers are essential model systems for studying biological membranes and for membrane-based sensor development. Surface-enhanced Raman spectroscopy (SERS) stands to add considerably to our understanding of the dynamics and interactions of these systems through direct chemical information. Despite this potential, SERS of lipid bilayers is not routinely achieved. Here, we carried out the first measurements of a solid-supported lipid bilayer on a SERS-active substrate and characterized the bilayer using SERS, atomic force microscopy, surface plasmon resonance spectroscopy, ellipsometry, and fluorescence recovery after photobleaching (FRAP). The creation of a fluid, SERS-active supported lipid bilayer was accomplished through use of a novel silica-coated silver film-over-nanosphere substrate. These substrates offer a powerful new platform to couple common surface techniques that are challenging on the nanoscale, for example, ellipsometry and FRAP, with SERS for studying biological membranes and their dynamics.

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