Abstract
Nonlinear optical dendritic macromolecules, called azobenzene dendrons, were synthesized by adding 1-15 azobenzene branching units as second-order nonlinear optical chromophore and placing aliphatic chains at the chain end. The electronic structure of azobenzene dendrons, which were expected to become dipolar, was proven by second-order nonlinear optical properties. The hyper-Rayleigh scattering result indicated that they had a rod-shaped molecular structure, where chromophoric units were oriented noncentrosymmetrically along the molecular axis and each of units coherently contributed to the second harmonic generation. The first-order molecular hyperpolarizability was 3,010 × 10-30 esu for an azobenzene dendron having 15 azobenzene chromophores. This level of hyperpolarizability was significantly higher than the hyperpolarizability of 150 × 10-30 esu for a momomeric azobenzene chromophore.
| Original language | English |
|---|---|
| Pages (from-to) | 47-50 |
| Number of pages | 4 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics |
| Volume | 24 |
| Issue number | 1-2 |
| Publication status | Published - 2000 |
| Externally published | Yes |
| Event | Chitose Internatinal Forum on Photonic Sciences - Chitose, Japan Duration: Oct 12 1999 → Oct 13 1999 |
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Condensed Matter Physics