Preparation of chromophoric dipolar dendrons as second-order nonlinear optical material

S. Yokoyama, S. Mashiko

研究成果: ジャーナルへの寄稿Conference article

9 引用 (Scopus)

抄録

Dendritic macromolecules, called `dendrons', having a branching structure modified with an electron donor/acceptor functionalized azobenzene chromophore have been synthesized. The structurally different dendrons possess different numbers, 1, 3, 7, and 15, of chromophore units. The second harmonic generation (SHG) of dendrons was measured in the molecular oriented thin films prepared by the Langmuir-Blodgett film transfer technique. In such structurally organized thin films, individual chromophores coherently contribute to the increase in the molecular hyperpolarizability of dendrons. The SHG activity became large as the numbers of branching units of dendrons increased. The highest molecular hyperpolarizability was found to be >8000×10-30 esu for dendron containing 15 chromophoric units. The SHG results suggest that the structure of dendrons synthesized is uniaxially dipolar, and that there is a particular merit in this structure for the generation of SHG.

元の言語英語
ページ(範囲)765-770
ページ数6
ジャーナルMaterials Research Society Symposium - Proceedings
488
出版物ステータス出版済み - 12 1 1997
イベントProceedings of the 1997 MRS Fall Meeting - Boston, MA, USA
継続期間: 12 1 199712 4 1997

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Dendrimers
Optical materials
optical materials
Harmonic generation
harmonic generations
Chromophores
chromophores
preparation
Thin films
Azobenzene
Langmuir Blodgett films
Langmuir-Blodgett films
thin films
Macromolecules
macromolecules
electron
material
Electrons
electrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Preparation of chromophoric dipolar dendrons as second-order nonlinear optical material. / Yokoyama, S.; Mashiko, S.

:: Materials Research Society Symposium - Proceedings, 巻 488, 01.12.1997, p. 765-770.

研究成果: ジャーナルへの寄稿Conference article

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