Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film

Suk Won Choi; N. Y. Ha; Kazuaki Shiromo; Nandiraju V.S. Rao; Manoj Kr Paul; Takehiro Toyooka; Suzushi Nishimura; J. W. Wu; Byoungchoo Park; Yoichi Takanishi; Ken Ishikawa; Hideo Takezoe

doi:10.1103/PhysRevE.73.021702

Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film

Suk Won Choi, N. Y. Ha, Kazuaki Shiromo, Nandiraju V.S. Rao, Manoj Kr Paul, Takehiro Toyooka, Suzushi Nishimura, J. W. Wu, Byoungchoo Park, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe

Department of Physics

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

39 Scopus citations

Abstract

Photoinduced circular anisotropy has been demonstrated in thin films of a main-chain polymeric liquid crystal (PLC) system doped with photochromic W -shaped molecules containing two azobenzene groups by irradiating with circularly polarized light (CPL). Reversible photoinduced circular dichroism (CD) was observed with sign relevant to the handedness of the CPL. The experimentally observed CD spectra were analyzed using the DeVoe polarizability model associated with the coupled oscillator method. We also propose a mechanism for the photoinduced circular anisotropy in our system; nucleating the W -shaped molecules with preferential twisted conformation by CPL irradiation, and triggering the local formation of a chiral structure in the W -shaped-molecule-doped main-chain PLC medium.

Original language	English
Article number	021702
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	73
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.73.021702
State	Published - 2006

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Choi, S. W., Ha, N. Y., Shiromo, K., Rao, N. V. S., Paul, M. K., Toyooka, T., Nishimura, S., Wu, J. W., Park, B., Takanishi, Y., Ishikawa, K., & Takezoe, H. (2006). Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 73(2), Article 021702. https://doi.org/10.1103/PhysRevE.73.021702

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title = "Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film",

abstract = "Photoinduced circular anisotropy has been demonstrated in thin films of a main-chain polymeric liquid crystal (PLC) system doped with photochromic W -shaped molecules containing two azobenzene groups by irradiating with circularly polarized light (CPL). Reversible photoinduced circular dichroism (CD) was observed with sign relevant to the handedness of the CPL. The experimentally observed CD spectra were analyzed using the DeVoe polarizability model associated with the coupled oscillator method. We also propose a mechanism for the photoinduced circular anisotropy in our system; nucleating the W -shaped molecules with preferential twisted conformation by CPL irradiation, and triggering the local formation of a chiral structure in the W -shaped-molecule-doped main-chain PLC medium.",

author = "Choi, {Suk Won} and Ha, {N. Y.} and Kazuaki Shiromo and Rao, {Nandiraju V.S.} and Paul, {Manoj Kr} and Takehiro Toyooka and Suzushi Nishimura and Wu, {J. W.} and Byoungchoo Park and Yoichi Takanishi and Ken Ishikawa and Hideo Takezoe",

year = "2006",

doi = "10.1103/PhysRevE.73.021702",

language = "English",

volume = "73",

journal = "Physical Review E - Statistical, Nonlinear, and Soft Matter Physics",

issn = "1539-3755",

publisher = "American Physical Society",

number = "2",

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Choi, SW, Ha, NY, Shiromo, K, Rao, NVS, Paul, MK, Toyooka, T, Nishimura, S, Wu, JW, Park, B, Takanishi, Y, Ishikawa, K & Takezoe, H 2006, 'Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film', Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol. 73, no. 2, 021702. https://doi.org/10.1103/PhysRevE.73.021702

TY - JOUR

T1 - Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film

AU - Choi, Suk Won

AU - Ha, N. Y.

AU - Shiromo, Kazuaki

AU - Rao, Nandiraju V.S.

AU - Paul, Manoj Kr

AU - Toyooka, Takehiro

AU - Nishimura, Suzushi

AU - Wu, J. W.

AU - Park, Byoungchoo

AU - Takanishi, Yoichi

AU - Ishikawa, Ken

AU - Takezoe, Hideo

PY - 2006

Y1 - 2006

N2 - Photoinduced circular anisotropy has been demonstrated in thin films of a main-chain polymeric liquid crystal (PLC) system doped with photochromic W -shaped molecules containing two azobenzene groups by irradiating with circularly polarized light (CPL). Reversible photoinduced circular dichroism (CD) was observed with sign relevant to the handedness of the CPL. The experimentally observed CD spectra were analyzed using the DeVoe polarizability model associated with the coupled oscillator method. We also propose a mechanism for the photoinduced circular anisotropy in our system; nucleating the W -shaped molecules with preferential twisted conformation by CPL irradiation, and triggering the local formation of a chiral structure in the W -shaped-molecule-doped main-chain PLC medium.

AB - Photoinduced circular anisotropy has been demonstrated in thin films of a main-chain polymeric liquid crystal (PLC) system doped with photochromic W -shaped molecules containing two azobenzene groups by irradiating with circularly polarized light (CPL). Reversible photoinduced circular dichroism (CD) was observed with sign relevant to the handedness of the CPL. The experimentally observed CD spectra were analyzed using the DeVoe polarizability model associated with the coupled oscillator method. We also propose a mechanism for the photoinduced circular anisotropy in our system; nucleating the W -shaped molecules with preferential twisted conformation by CPL irradiation, and triggering the local formation of a chiral structure in the W -shaped-molecule-doped main-chain PLC medium.

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U2 - 10.1103/PhysRevE.73.021702

DO - 10.1103/PhysRevE.73.021702

M3 - Article

AN - SCOPUS:33344467636

SN - 1539-3755

VL - 73

JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

IS - 2

M1 - 021702

ER -

Photoinduced circular anisotropy in a photochromic W -shaped-molecule-doped polymeric liquid crystal film

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