MICROSECOND TIME-RESOLVED INFRARED STUDY OF THE ELECTRIC-FIELD-INDUCED REORIENTATION OF NEMATIC LIQUID-CRYSTALS

被引：60

作者：

URANO, TI ^{[1
]}

HAMAGUCHI, H ^{[1
]}

机构：

[1] KANAGAWA ACAD SCI & TECHNOL,MOLEC SPECTROSCOPY LAB,KSP E 301,3-2-1 SAKATO,KAWASAKI 213,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 195卷 / 04期

关键词：

D O I：

10.1016/0009-2614(92)85604-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Microsecond time-resolved infrared spectroscopy has been used to study the time course of the electric-field-induced reorientation of a nematic liquid crystal, 4-n-pentyl-4'-cyanobiphenyl (5CB) and its partially deuterated analogue (5CB-d2). The temporal responses to a pulsed electric field were markedly distinct between the infrared bands due to the pentyl group and those due to the cyanobiphenyl group. It is likely that, in the course of reorientation, the pentyl part and the cyanobiphenyl part can move distinctly through the internal rotation around the C(biphenyl)-C(pentyl) bond. It was also found that the motion of the pentyl part precedes that of the cyanobiphenyl part at the early stage of reorientation.

引用

页码：287 / 292

页数：6

共 17 条

[1] LIQUID-CRYSTAL TWIST CELL DYNAMICS WITH BACKFLOW [J].

BERREMAN, DW .

JOURNAL OF APPLIED PHYSICS, 1975, 46 (09) :3746-3751

[2] TRANSIENT ELECTRO-OPTIC RAMAN-SCATTERING IN LIQUID-CRYSTALS [J].

COLES, HJ ;

TIPPING, J .

NATURE, 1985, 316 (6024) :136-138

[3]

COLES HJ, 1985, MOL CRYST LIQ CRYST, V2, P23

[4]

DEGENNES PG, 1975, PHYSICS LIQUID CRYST

[5] RAMAN-SPECTRA OF 4-CYANO-4'-PENTYLBIPHENYL AND 4-CYANO-4'-PENTYL-D11-BIPHENYL [J].

GRAY, GW ;

MOSLEY, A .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1976, 35 (1-2) :71-81

[6] TIME-RESOLVED VIBRATIONAL SPECTROSCOPY OF AN ELECTRIC FIELD-INDUCED TRANSITION IN A NEMATIC LIQUID-CRYSTAL BY USE OF STEP-SCAN 2D FT-IR [J].

GREGORIOU, VG ;

CHAO, JL ;

TORIUMI, H ;

PALMER, RA .

CHEMICAL PHYSICS LETTERS, 1991, 179 (5-6) :491-496

[7] CONSTRUCTION OF A VERSATILE MICROSECOND TIME-RESOLVED INFRARED SPECTROMETER [J].

IWATA, K ;

HAMAGUCHI, H .

APPLIED SPECTROSCOPY, 1990, 44 (09) :1431-1437

[8] TIME-RESOLVED INFRARED SPECTROSCOPIC STUDY OF THE ORIENTATION BEHAVIOR OF LIQUID-CRYSTALLINE MOLECULES IN THE PRESENCE OF AN ELECTRIC-FIELD [J].

KAITO, A ;

WANG, YK ;

HSU, SL .

ANALYTICA CHIMICA ACTA, 1986, 189 (01) :27-40

[9]

KATO C, 1991, BUNKO KENKYU, V40, P255

[10] ORIENTATIONAL ORDER PARAMETER S2 OF SOME 4-CYANO-4', NORMAL-ALKYLBIPHENYL AND 4-CYANO-4', NORMAL-ALKOXYBIPHENYLS [J].

KIROV, N ;

SABEVA, M ;

RATAJCZAK, H .

ADVANCES IN MOLECULAR RELAXATION AND INTERACTION PROCESSES, 1982, 22 (03) :145-158

← 1 2 →