Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods Kim, Hyeong Jin Wang, Wenjie Bu, Wei Hossen, Md. Mir Londono-Calderon, Alejandra Hillier, Andrew Prozorov, Tanya Mallapragada, Surya Vaknin, David
dc.contributor.department Ames National Laboratory
dc.contributor.department Physics and Astronomy
dc.contributor.department Neuroscience
dc.contributor.department Materials Science and Engineering
dc.contributor.department Chemical and Biological Engineering 2020-02-18T23:19:01.000 2020-06-29T23:23:57Z 2020-06-29T23:23:57Z 2019-12-30
dc.description.abstract <p>Although challenging, assembling and orienting non-spherical nanomaterials into two- and three-dimensional (2D and 3D) ordered arrays can facilitate versatile collective properties by virtue of their shape-dependent properties that cannot be realized with their spherical counterparts. Here, we report on the self-assembly of gold nanorods (AuNRs) into 2D films at the vapor/liquid interface facilitated by grafting them with poly(ethylene glycol) (PEG). Using surface sensitive synchrotron grazing incidence small angle X-ray scattering (GISAXS) and specular X-ray reflectivity (XRR), we show that PEG-AuNRs in aqueous suspensions migrate to the vapor/liquid interface in the presence of salt, forming a uniform monolayer with planar-to-surface orientation. Furthermore, the 2D assembled PEG functionalized AuNRs exhibit short range order into rectangular symmetry with side-by-side and tail-to-tail nearest-neighbor packing. The effect of PEG chain length and salt concentration on the 2D assembly are also reported.</p>
dc.identifier archive/
dc.identifier.articleid 1557
dc.identifier.contextkey 16580611
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/552
dc.language.iso en
dc.relation.ispartofseries IS-J 10039
dc.subject.disciplines Chemical Engineering
dc.subject.disciplines Nanoscience and Nanotechnology
dc.subject.keywords Self assembly
dc.subject.keywords Nanorod
dc.subject.keywords GISAXS
dc.subject.keywords XRR
dc.title Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods
dc.type article
dc.type.genre article
dspace.entity.type Publication
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