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Title: The Role of Oleic Acid: From Synthesis to Assembly of Perovskite Nanocuboid Two-Dimensional Arrays

Authors:
; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC); Institute for Atom-efficient Chemical Transformations (IACT)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1210841
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Inorg. Chem.; Journal Volume: 54(3); Related Information: IACT partners with Argonne National Laboratory (lead); Brookhaven National Laboratory; Northwestern University; Purdue University; University of Wisconsin at Madison
Country of Publication:
United States
Language:
English
Subject:
catalysis (homogeneous), catalysis (heterogeneous), biofuels (including algae and biomass), bio-inspired, materials and chemistry by design, synthesis (novel materials), synthesis (scalable processing)

Citation Formats

Hu, Linhua, Wang, Chuandao, Kennedy, Robert M., Marks, Laurence D., and Poeppelmeier, Kenneth R. The Role of Oleic Acid: From Synthesis to Assembly of Perovskite Nanocuboid Two-Dimensional Arrays. United States: N. p., 2015. Web. doi:10.1021/ic5011715.
Hu, Linhua, Wang, Chuandao, Kennedy, Robert M., Marks, Laurence D., & Poeppelmeier, Kenneth R. The Role of Oleic Acid: From Synthesis to Assembly of Perovskite Nanocuboid Two-Dimensional Arrays. United States. doi:10.1021/ic5011715.
Hu, Linhua, Wang, Chuandao, Kennedy, Robert M., Marks, Laurence D., and Poeppelmeier, Kenneth R. Mon . "The Role of Oleic Acid: From Synthesis to Assembly of Perovskite Nanocuboid Two-Dimensional Arrays". United States. doi:10.1021/ic5011715.
@article{osti_1210841,
title = {The Role of Oleic Acid: From Synthesis to Assembly of Perovskite Nanocuboid Two-Dimensional Arrays},
author = {Hu, Linhua and Wang, Chuandao and Kennedy, Robert M. and Marks, Laurence D. and Poeppelmeier, Kenneth R.},
abstractNote = {},
doi = {10.1021/ic5011715},
journal = {Inorg. Chem.},
number = ,
volume = 54(3),
place = {United States},
year = {Mon Feb 02 00:00:00 EST 2015},
month = {Mon Feb 02 00:00:00 EST 2015}
}
  • Oleic acid, an 18-carbon chain fatty acid, has been widely used as a surfactant to fabricate colloidal nanocrystals. In previous work, we discovered a lamellar microemulsion strategy to fabricate sub-20 nm SrTiO3 nanocuboids using oleic acid and oleate species. Here, we demonstrate (i) the general synthesis with lamellar microemulsions of a family of compositionally varied BaxSr1–xTiO3 crystalline nanocuboids with uniform size, and (ii) subsequent assembly into two-dimensional arrays by nanoparticle-bound oleate in a nonpolar solvent. The measured interparticle distance (2.4 nm) of adjacent nanoparticles in an array is less than the length of a double oleate layer (~4 nm). Onmore » the basis of calculations of the interfacial free energy, we propose the hydrophobic, hydrocarbon-terminated groups of oleate from adjacent nanocuboids are situated closely but do not overlap. Lower aspect ratio nanocuboids are bordered by four adjacent nanocuboids which results in a uniform direction self-assembly array, whereas higher aspect ratio nanocuboids are bordered by five or six adjacent nanocuboids and can develop an arced local coordination.« less
  • The surface hydrophobicity of colloidal silica (SiO2) nanopheres is manipulated by a chemical graft of alkyl chains with silane coupling agents or by physical adsorption of a cationic surfactant. The surface-modified SiO2 spheres can be transferred from the aqueous phase to organic solvents and readily self-assemble at the water-air interface to form two-dimensional (2D) particle arrays. Closely packed particle monolayers are obtained by adjusting the hydrophilic/hydrophobic balance of the synthesized SiO2 spheres and may further be transferred onto solid substrates layer by layer to form three-dimensional (3D) ordered particle arrays with a hexagonal close-packed (hcp) crystalline structure. The 2D monolayermore » and 3D multilayer SiO2 films exhibit photonic crystal properties, which were determined by the UV-visible spectroscopic analysis in transmission mode. In the multilayer films, the Bragg diffraction maxima increased with an increase in thickness of the particle layers. The experimentally observed diffraction positions are in good agreement with those that were theoretically calculated.« less