You need JavaScript to view this

Crystal structure and thin film morphology of BBL ladder polymer

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.)
Authors:
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] 
  1. Department of Macromolecular Science, Han Nam University, Taejon (Korea, Republic of)
  2. Department of Chemistry, University of Dayton, Dayton, OH (United States)
  3. University of Dayton Research, Dayton, OH (United States)
  4. Systran Corporation, Dayton, OH (United States)
  5. Materials Directorate, Wright Laboratory, Wright-Patterson Air Force Base, OH (United States)
Publication Date:
Mar 01, 1995
Product Type:
Journal Article
Reference Number:
SCA: 360602; PA: CHF-96:0G0860; EDB-96:017881; SN: 96001523777
Resource Relation:
Journal Name: Synthetic Metals; Journal Volume: 69; Journal Issue: 1-3; Other Information: PBD: 1 Mar 1995
Subject:
36 MATERIALS SCIENCE; BENZIMIDAZOLES; CRYSTAL STRUCTURE; POLYMERIZATION; ANISOTROPY; EXTRUSION; LATTICE PARAMETERS; MORPHOLOGY; ORGANIC POLYMERS; ORTHORHOMBIC LATTICES; POLYESTERS; THICKNESS; THIN FILMS; X-RAY DIFFRACTION; SCANNING ELECTRON MICROSCOPY
OSTI ID:
167473
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Journal ID: SYMEDZ; ISSN 0379-6779; TRN: CH96G0860
Submitting Site:
CHF
Size:
pp. 533-535
Announcement Date:
Jan 30, 1996

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. 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, and Arnold, F E. 1995. "Crystal structure and thin film morphology of BBL ladder polymer." Switzerland. doi:10.1016/0379-6779(94)02556-E. https://www.osti.gov/servlets/purl/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 = {Synthetic Metals}
issue = {1-3}
volume = {69}
journal type = {AC}
place = {Switzerland}
year = {1995}
month = {Mar}
}