Helical structure of liquid crystalline poly(N-((4-n-butylphenyl) diphenylmethyl) methacrylamide)

Macromolecules

Volumn 43, Issue 17, 2010, Pages 7386-7390

  Nagai, Kanji ^a,b   Okoshi, Kento ^b   Sakurai, Shin Ichiro ^b   Banno, Motonori ^a   Azam, A K M Fakhrul ^a   Kamigaito, Masami ^a   Okamoto, Yoshio ^a,c   Yashima, Eiji ^a,b  

^a NAGOYA UNIVERSITY   (Japan)

^b JAPAN SCIENCE AND TECHNOLOGY AGENCY   (Japan)

^c HARBIN ENGINEERING UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

AZOBISISOBUTYRONITRILE; CHAIN STIFFNESS; HELICAL STRUCTURES; HIGH RESOLUTION; LENGTH MEASUREMENT; METHACRYLAMIDES; MULTIANGLE LASER LIGHT SCATTERING; OPTICALLY ACTIVE; RADICAL POLYMERIZATION; RIGID RODS; UV IRRADIATION; WORM-LIKE CHAIN MODELS; XRD MEASUREMENTS;

ATOMIC FORCE MICROSCOPY; LIGHT SCATTERING; ORGANIC POLYMERS; REFRACTIVE INDEX; STIFFNESS; TOLUENE;

SIZE EXCLUSION CHROMATOGRAPHY;

EID: 77956410270     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma1012573     Document Type: Article

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58. 3) for this unit cell. This may be because the unit cell of poly-1 was determined on the basis of the strong reflections of 15.70 Å and 8.68 Å, and the observed irregularity of the two-dimensional lattice may influence the lower density of the poly-1 films. Because we could not completely exclude the possibility that the poly-1 may have a 4/1 helical structure, a possible 4/1 helical poly-1 was constructed in the same way for the 6/1 helical poly-1. The optimized 4/1 helical structure is shown in Figure S3 in the Supporting Information. We note that the 4/1 helical poly-1 had a much higher energy than that of the 6/1 helical poly-1 (Table S1 in the Supporting Information). Although the 6/1 helical poly-1 was energetically more stable than that of the 4/1 helical poly-1 based on empirical MM calculations, more detailed analyses are required to unambiguously determine the helical structure of poly-1.
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