title: Tuning Optical Properties of Encapsulated Clusters of Gold Nanoparticles through Stimuli-Triggered Controlled Aggregation.
abstract: Gold nanoparticles entrapped in the hollow polymer nanocapsules undergo pH-mediated controlled aggregation. Encapsulated clusters of nanoparticles show absorbance at higher wavelengths compared with individual nanoparticles. The size of the aggregates is controlled by the number of nanoparticles entrapped in individual nanocapsules. Such controlled aggregation may permit small biocompatible nanoparticles exhibit desirable properties for biomedical applications that are typically characteristic of large nanoparticles.
authors.affiliation: Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, 06269, CT, USA.
authors.forename: Sergey A
authors.identifier: 0000-0001-6668-6445
authors.initials: SA
authors.lastname: Dergunov
authors.affiliation: Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, 06269, CT, USA.
authors.forename: Mariya D
authors.initials: MD
authors.lastname: Kim
authors.affiliation: Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, 06269, CT, USA.
authors.forename: Sergey N
authors.identifier: 0000-0002-8713-4516
authors.initials: SN
authors.lastname: Shmakov
authors.affiliation: Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN, 46383, USA.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Richter
authors.affiliation: DND-CAT, Advanced Photon Source, ANL Bldg. 432, 9700 S. Cass Ave., Argonne, Illinois, 60439, USA.
authors.forename: Steven
authors.initials: S
authors.lastname: Weigand
authors.affiliation: Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, 06269, CT, USA. eugene.pinkhassik@uconn.edu.
authors.forename: Eugene
authors.identifier: 0000-0003-1429-0435
authors.initials: E
authors.lastname: Pinkhassik
mesh_terms: D000067493:Dynamic Light Scattering; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D053769:Nanocapsules / Q000737:chemistry; D010316:Particle Size; D053838:Scattering, Small Angle; D014961:X-Ray Diffraction
chemical_list: D053769:Nanocapsules; D006046:Gold
keywords: cluster compounds; encapsulation; gold; nanocapsules; nanoparticles; small-angle X-ray scattering