期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 14, 页码 6752-6764出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm14915j
关键词
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资金
- National Science Foundation (NSF) [DMR-0551020]
- National Science Foundation (NSF) MDITR Science and Technology Center [DMR-0120967]
- Air Force Office of Scientific Research AFOSR [F49620-03-1-0110-P000]
- DARPA MORPH [14-04-10094]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [GRANTS:13974548] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0905686] Funding Source: National Science Foundation
The rational design of bulk nanoscale order in organic electro-optic materials, where the strong dipole-dipole interactions tend to dominate over the weaker forces exploited for self-assembly processes, remains an attractive yet elusive goal. Towards this end, a series of pseudo-discotic dipolar nonlinear optical chromophores have been synthesized and fully characterized. Theoretical guidance and an iterative molecular design process have succeeded in engineering long-range nanoscale order in organic electro-optic glasses. Small-angle thin-film X-ray diffraction experiments demonstrate a self-assembled lamellar morphology in a majority of these materials. Cryogenic crystallography, using a synchrotron X-ray source, afforded the structure of a representative system. This structure, in concert with thin-film X-ray diffraction, atomic force microscopy, UV-vis-NIR absorption spectroscopy, and refractive index experiments elucidated the nanoscale order in the films. Application of these materials in electro-optics is discussed.
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