Abstract
We summarize the nonlinear optical (NLO) properties of octupolar molecules, crystals, and films developed in our laboratory. We present the design strategy, structure-property relationship, and second-order NLO properties of 1,3,5-trinitro- and 1,3,5-tricyano-2,4,6-tris(pdiethylaminostyryl) benzene (TTB) derivatives, TTB crystals, and films prepared by free-casting TTB in poly(methyl methacrylate) (PMMA).The first hyperpolarizability ofTTB was fivefold larger than that of the dipolar analogue. Moreover, the TTB crystal showed unprecedentedly large second-harmonic generation (SHG). While TTB crystal films (20 wt% TTB/PMMA) on various substrates showed appreciable SHG values, the cylinder film exhibited much larger SHG values and large electro-optic (EO) coefficients. The large SHG values and EO coefficients, as well as the high thermal stability of the cylinder film, will make it a potential candidate for NLOdevice applications.
| Original language | English |
|---|---|
| Pages (from-to) | 132-142 |
| Number of pages | 11 |
| Journal | Chemical Record |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 |
Keywords
- Crystal growth
- Nonlinear optics
- Octupolar molecules
- Structure-activity relationships
- Thin films
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
- Biochemistry
- Biochemistry, medical