ICCAS OpenIR
Controllable Self-Assembly of PbS Nanostars into Ordered Structures: Close-Packed Arrays and Patterned Arrays
Huang, Teng; Zhao, Qiang; Xiao, Junyan; Qi, Limin
2010-08-01
Source PublicationACS NANO
ISSN1936-0851
Volume4Issue:8Pages:4707-4716
AbstractControllable self-assembly of uniform star-shaped PbS nanocrystals with six symmetric (100)oriented horns into highly ordered structures including close-packed arrays and patterned arrays was realized by evaporation-induced assembly routes. First, large-area three-dimensional (3D) and two-dimensional (2D) hexagonal close-packed (hcp) arrays of PbS nanostars were assembled on clean Si substrate by drop coating and vertical deposition, respectively. Then, by using monolayer colloidal crystals (MCC) and inverted MCC (IMCC) as the template, a variety of non-close-packed (ncp) arrays of PbS nanostars with controllable patterns were fabricated through the vertical deposition method. With the MCC template, an ncp array of [111]-oriented PbS nanostars with three horns stably standing on the template plane was prepared, leading to the formation of novel star sphere binary colloidal crystals with a stoichiometric star/sphere ratio of 1. The reflectance spectrum of the resultant MCC PbS composite array was measured, which exhibited a considerable red shift in the reflectance peak compared with the original MCC template. Alternatively, with the IMCC template, an ncp array of [001]-oriented PbS nanostars with a single horn stretched vertically upward was obtained. Furthermore, some novel patterns for PbS ncp arrays were readily fabricated using MCC/IMCC templates with larger periodic spacings. For the template-assisted assembly of PbS nanostars, the obtained PbS ncp arrays generally inherited the long-range hexagonal order from the initial MCC template. This assembly strategy is a versatile approach and may open a new route for the controlled assembly of anisotropic nanostructured materials into large-scale ordered arrays with desirable patterns.
KeywordSelf-assembly Nanostars Patterning Ordered Arrays Monolayer Colloidal Crystals
DOI10.1021/nn101272y
Indexed BySCI
Language英语
WOS IDWOS:000281052700045
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70904
Collection中国科学院化学研究所
Corresponding AuthorQi, Limin
AffiliationPeking Univ, State Key Lab Struct Chem Unstable & Stable Speci, BNLMS, Coll Chem, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Huang, Teng,Zhao, Qiang,Xiao, Junyan,et al. Controllable Self-Assembly of PbS Nanostars into Ordered Structures: Close-Packed Arrays and Patterned Arrays[J]. ACS NANO,2010,4(8):4707-4716.
APA Huang, Teng,Zhao, Qiang,Xiao, Junyan,&Qi, Limin.(2010).Controllable Self-Assembly of PbS Nanostars into Ordered Structures: Close-Packed Arrays and Patterned Arrays.ACS NANO,4(8),4707-4716.
MLA Huang, Teng,et al."Controllable Self-Assembly of PbS Nanostars into Ordered Structures: Close-Packed Arrays and Patterned Arrays".ACS NANO 4.8(2010):4707-4716.
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