We developed a solution-based method to synthesize palladium nanoparticle of different shapes, and investigated the relationship between nanoparticle shape, ligand shell, and the emergent phase behavior of nanocube assemblies using small-angle x-ray scattering and electron microscopy. We also developed a general strategy for DNA functionalization and mediated assembly of 3D ordered heterogeneous systems, comprising plasmonic (Au), magnetic (FeO, Fe2O3), catalytic (Pd), and luminescent (CdSe/Te@ZnS and CdS@ZnS QDs) NPs. This strategy provides tremendous opportunities to study the self-assembly behavior and collective properties of heterogeneous systems. We observed rich phase behavior and novel disorder-to-order transition pathway of the assemblies, and also investigated their properties, including photoluminescence and magnetic response.
Yugang Zhang, Zhenyang Wang, Fang Lu, Ye Zhang, Yanhe Xiao, Lide Zhang, Property Modulation of Zinc Oxide Hierarchical Architectures in Photoluminescence and Raman Scattering, Applied Physics Letter, 89: 113110-1—-3, 2006
Yugang Zhang, Fang Lu, Zhenyang Wang, Lide Zhang, Aggregation of ZnO nanorods into films by oriented attachment, Journal of Physics and Chemistry C., 111: 4519-4523, 2007
Yugang Zhang, Fang Lu, Zhenyang Wang, Huixin Wang, Mingguang Kong, Xiaoguang Zhu, and Lide Zhang. ZnS Nanoparticle-Assisted Synthesis and Optical Properties of ZnS Nanotowers, Crystal Growth and Design, 7: 1459-1462, 2007
Fang Lu, Weiping Cai, Yugang Zhang, Honeycomb-like ZnO hierarchical micro/nanoarchitecture and its photocatalytic property, Advanced Functional Materials, 18: 1047-1056, 2008
Yugang Zhang, Fang Lu, Daniel van der Lelie, Oleg Gang, Continuous phase transformation in nanocube assemblies, Phys. Rev. Lett. 107, 135701, 2011