Abstract
Crystal structure and morphology of poly[7-oxo-7H-benz(d,e)imidazo(4`,5`:5,6)-benzimidazo(2,1-a)isoquinoline-3,4:10,11-tetrayl-10-carbonyl] (BBL) ladder-like polymer were studied. The polymer forms a two-dimensional lattice of nematic liquid crystalline structure. An orthorhombic unit cell with cell parameters of a=7.87 b=3.37 c=11.97A was determined from the fiber diffraction pattern. In thin films, the rigid chains spontaneously form a layered structure across the film thickness, but in a very unusual manner, i.e. the very large molecular plane is standing perpendicularly to the film surface plane. The results are identical to our recent results of poly(p-phenylene benzobisthiazole) (PBT) film [7]. The polymer, however, lost its anisotropic order upon extrusion into a film and resulted in a fiber-like structure. (orig.)
Song, H H;
[1]
Fratini, A V;
[2]
Chabinyc, M;
[2]
Price, G E;
[3]
Agrawal, A K;
[4]
Wang, C S;
[3]
Burkette, J;
[3]
Dudis, D S;
[5]
Arnold, F E
[5]
- Department of Macromolecular Science, Han Nam University, Taejon (Korea, Republic of)
- Department of Chemistry, University of Dayton, Dayton, OH (United States)
- University of Dayton Research, Dayton, OH (United States)
- Systran Corporation, Dayton, OH (United States)
- Materials Directorate, Wright Laboratory, Wright-Patterson Air Force Base, OH (United States)
Citation Formats
Song, H H, Fratini, A V, Chabinyc, M, Price, G E, Agrawal, A K, Wang, C S, Burkette, J, Dudis, D S, and Arnold, F E.
Crystal structure and thin film morphology of BBL ladder polymer.
Switzerland: N. p.,
1995.
Web.
doi:10.1016/0379-6779(94)02556-E.
Song, H H, Fratini, A V, Chabinyc, M, Price, G E, Agrawal, A K, Wang, C S, Burkette, J, Dudis, D S, & Arnold, F E.
Crystal structure and thin film morphology of BBL ladder polymer.
Switzerland.
https://doi.org/10.1016/0379-6779(94)02556-E
Song, H H, Fratini, A V, Chabinyc, M, Price, G E, Agrawal, A K, Wang, C S, Burkette, J, Dudis, D S, and Arnold, F E.
1995.
"Crystal structure and thin film morphology of BBL ladder polymer."
Switzerland.
https://doi.org/10.1016/0379-6779(94)02556-E.
@misc{etde_167473,
title = {Crystal structure and thin film morphology of BBL ladder polymer}
author = {Song, H H, Fratini, A V, Chabinyc, M, Price, G E, Agrawal, A K, Wang, C S, Burkette, J, Dudis, D S, and Arnold, F E}
abstractNote = {Crystal structure and morphology of poly[7-oxo-7H-benz(d,e)imidazo(4`,5`:5,6)-benzimidazo(2,1-a)isoquinoline-3,4:10,11-tetrayl-10-carbonyl] (BBL) ladder-like polymer were studied. The polymer forms a two-dimensional lattice of nematic liquid crystalline structure. An orthorhombic unit cell with cell parameters of a=7.87 b=3.37 c=11.97A was determined from the fiber diffraction pattern. In thin films, the rigid chains spontaneously form a layered structure across the film thickness, but in a very unusual manner, i.e. the very large molecular plane is standing perpendicularly to the film surface plane. The results are identical to our recent results of poly(p-phenylene benzobisthiazole) (PBT) film [7]. The polymer, however, lost its anisotropic order upon extrusion into a film and resulted in a fiber-like structure. (orig.)}
doi = {10.1016/0379-6779(94)02556-E}
journal = []
issue = {1-3}
volume = {69}
journal type = {AC}
place = {Switzerland}
year = {1995}
month = {Mar}
}
title = {Crystal structure and thin film morphology of BBL ladder polymer}
author = {Song, H H, Fratini, A V, Chabinyc, M, Price, G E, Agrawal, A K, Wang, C S, Burkette, J, Dudis, D S, and Arnold, F E}
abstractNote = {Crystal structure and morphology of poly[7-oxo-7H-benz(d,e)imidazo(4`,5`:5,6)-benzimidazo(2,1-a)isoquinoline-3,4:10,11-tetrayl-10-carbonyl] (BBL) ladder-like polymer were studied. The polymer forms a two-dimensional lattice of nematic liquid crystalline structure. An orthorhombic unit cell with cell parameters of a=7.87 b=3.37 c=11.97A was determined from the fiber diffraction pattern. In thin films, the rigid chains spontaneously form a layered structure across the film thickness, but in a very unusual manner, i.e. the very large molecular plane is standing perpendicularly to the film surface plane. The results are identical to our recent results of poly(p-phenylene benzobisthiazole) (PBT) film [7]. The polymer, however, lost its anisotropic order upon extrusion into a film and resulted in a fiber-like structure. (orig.)}
doi = {10.1016/0379-6779(94)02556-E}
journal = []
issue = {1-3}
volume = {69}
journal type = {AC}
place = {Switzerland}
year = {1995}
month = {Mar}
}