Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films

I. Naydenova; L. Nikolova; P. S. Ramanujam; S. Hvilsted

doi:10.1088/1464-4258/1/4/303

Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films

I. Naydenova, L. Nikolova, P. S. Ramanujam, S. Hvilsted

Research output: Contribution to journal › Article › peer-review

Abstract

We report the inducement of large circular birefringence (optical activity) in films of a cyanoazobenzene side-chain liquid-crystalline polyester on illumination with circularly polarized light. The polyester has no chiral groups and is initially isotropic. The induced optical rotation is up to 5° μm^-1 at 633 nm and three to four times larger at 488 nm. The effect is explained through photoinduced changes in the structure of the polymer films due to reorientation of the rod-like chromophores and angular momentum transfer from the circularly polarized light to the azobenzene side chains.

Original language	English
Pages (from-to)	438-441
Number of pages	4
Journal	Journal of Optics A: Pure and Applied Optics
Volume	1
Issue number	4
DOIs	https://doi.org/10.1088/1464-4258/1/4/303
Publication status	Published - Jul 1999
Externally published	Yes

Access to Document

10.1088/1464-4258/1/4/303

Cite this

@article{d1e166d1739f49c0b38a32c5a2c90b9c,

title = "Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films",

abstract = "We report the inducement of large circular birefringence (optical activity) in films of a cyanoazobenzene side-chain liquid-crystalline polyester on illumination with circularly polarized light. The polyester has no chiral groups and is initially isotropic. The induced optical rotation is up to 5° μm-1 at 633 nm and three to four times larger at 488 nm. The effect is explained through photoinduced changes in the structure of the polymer films due to reorientation of the rod-like chromophores and angular momentum transfer from the circularly polarized light to the azobenzene side chains.",

author = "I. Naydenova and L. Nikolova and Ramanujam, {P. S.} and S. Hvilsted",

year = "1999",

month = jul,

doi = "10.1088/1464-4258/1/4/303",

language = "English",

volume = "1",

pages = "438--441",

journal = "Journal of Optics A: Pure and Applied Optics",

issn = "1464-4258",

publisher = "IOP Publishing Ltd.",

number = "4",

}

TY - JOUR

T1 - Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films

AU - Naydenova, I.

AU - Nikolova, L.

AU - Ramanujam, P. S.

AU - Hvilsted, S.

PY - 1999/7

Y1 - 1999/7

N2 - We report the inducement of large circular birefringence (optical activity) in films of a cyanoazobenzene side-chain liquid-crystalline polyester on illumination with circularly polarized light. The polyester has no chiral groups and is initially isotropic. The induced optical rotation is up to 5° μm-1 at 633 nm and three to four times larger at 488 nm. The effect is explained through photoinduced changes in the structure of the polymer films due to reorientation of the rod-like chromophores and angular momentum transfer from the circularly polarized light to the azobenzene side chains.

AB - We report the inducement of large circular birefringence (optical activity) in films of a cyanoazobenzene side-chain liquid-crystalline polyester on illumination with circularly polarized light. The polyester has no chiral groups and is initially isotropic. The induced optical rotation is up to 5° μm-1 at 633 nm and three to four times larger at 488 nm. The effect is explained through photoinduced changes in the structure of the polymer films due to reorientation of the rod-like chromophores and angular momentum transfer from the circularly polarized light to the azobenzene side chains.

UR - http://www.scopus.com/inward/record.url?scp=0033356393&partnerID=8YFLogxK

U2 - 10.1088/1464-4258/1/4/303

DO - 10.1088/1464-4258/1/4/303

M3 - Article

AN - SCOPUS:0033356393

SN - 1464-4258

VL - 1

SP - 438

EP - 441

JO - Journal of Optics A: Pure and Applied Optics

JF - Journal of Optics A: Pure and Applied Optics

IS - 4

ER -

Light-induced circular birefringence in cyanoazobenzene side-chain liquid-crystalline polyester films

Abstract

Access to Document

Fingerprint

Cite this