MOLECULAR-ORIENTATION OF RUBBED AND UNRUBBED POLYIMIDE FILMS DETERMINED BY POLARIZED INFRARED-ABSORPTION

被引：66

作者：

SAKAMOTO, K ^{[1
]}

ARAFUNE, R ^{[1
]}

ITO, N ^{[1
]}

USHIODA, S ^{[1
]}

SUZUKI, Y ^{[1
]}

MOROKAWA, S ^{[1
]}

机构：

[1] CITIZEN WATCH CO LTD, TECH LAB, TOKOROZAWA, SAITAMA 359, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1994年 / 33卷 / 9B期

关键词：

POLYIMIDE; PMDA-ODA; RUBBING TREATMENT; IR ABSORPTION SPECTROSCOPY; MOLECULAR ORIENTATION; ALIGNMENT OF LIQUID CRYSTAL; PRETILT ANGLE;

D O I：

10.1143/JJAP.33.L1323

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have determined the orientations of poly[4,4'-oxydiphenylene-pyromellitimide (PMDA-ODA) molecules in rubbed and unrubbed polyimide films (similar to 120 Angstrom) on Si substrates by polarized IR absorption spectroscopy. We found that for rubbed films the polymer chains are oriented along the rubbing direction and are tilted up on average by 8.5 degrees from the surface plane. We conclude that the polymer chain inclination induced by rubbing determines the tilt of the director of the bulk liquid crystal.

引用

页码：L1323 / L1326

页数：4

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