Abstract
X-ray studies performed during the growth of CdC O3 and MnC O3 crystals from supersaturated aqueous solutions, at fatty acid monolayer templates, reveal that the nucleates are nearly three-dimensional powders below a threshold supersaturation. However, at higher supersaturations, the crystals are preferentially oriented with the {0 1 2} direction vertical. Scanning electron microscope images of samples transferred to substrates show discrete crystals at low concentrations, while at higher concentrations the crystals self-aggregate to form linear chains and sheets. The authors speculate that preferential alignment at the organic-inorganic interface is enhanced as a consequence of oriented aggregation of crystals. The role of monolayer-ion interactions in governing the morphologies and the resulting orientation of the inorganic nucleate is discussed.
| Original language | English (US) |
|---|---|
| Article number | 224713 |
| Journal | Journal of Chemical Physics |
| Volume | 125 |
| Issue number | 22 |
| DOIs | |
| State | Published - 2006 |
Funding
This work was supported by the U.S. Department of Energy under Grant No. DE-FG02-84ER45125. It was performed at beamline X14-A of the National Synchrotron Light Source and at beam line 1BM-C at the Advanced Photon Source. The authors thank Dr. J. Bai for his valuable assistance at the NSLS, and Dr. P. Lee for his help at the APS.
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry