Journal
SMALL
Volume 4, Issue 11, Pages 2074-2078Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.200800811
Keywords
dipoles; hydrogen bonding; nanowires; self-assembly
Categories
Funding
- NSF [CHE-0518487, DUE-044852]
- EPSRC [EP/E018211/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E018211/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [820506] Funding Source: National Science Foundation
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Synergistic dipole-dipole and hydrogen-bonding interactions are used to assemble nanostructured materials. Precipitation of a hydrogen-bonding donor-acceptor molecule 8-[[p-[bis(ethyl)amino]phenyl]azo]-isobutylflavin (ABFL) yields nanowires approximate to 50-150 nm in diameter and lengths of several millimeters. Precipitation of the non-hydrogen-bonding analog, methylated ABFL (MABFL), generates micrometer-sized hexagonal platelets that are 5-10 mu m in length, 1-5 mu m in width, and 0.1-0.5 mu m thick. The structural similarity of the two molecules allows intermediate morphologies to be formed via co-precipitation. Doping experiments demonstrate efficient control over nanowire length and diameter due to the disruption of the hydrogen bonding within the nanowires.
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