| Title | NLO chromophores containing dihydrobenzothiazolylidene and dihydroquinolinylidene donors with an azo linker: Synthesis and optical properties |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Ashraf, M., Teshome A., Kay A.J., Gainsford G.J., Bhuiyan M.D.H., Asselberghs I., and Clays K. |
| Journal | Dyes and Pigments |
| Volume | 98 |
| Issue | 1 |
| Pagination | 82 - 92 |
| Date Published | 2013 |
| ISSN | 01437208 (ISSN) |
| Keywords | Azo dyes, Chromophores, Diazonium salts, First hyperpolarizabilities, High nonlinear, Hyper-polarizability, NLO-chromophore, nonlinear optical chromophore, Nonlinear optical response, Nonlinear optics, Novel materials, Optical properties, X ray crystallography |
| Abstract | We report the synthesis of a series of nonlinear optical chromophores containing either a - dihydrobenzothiazolylidene or dihydroquinolinylidene donor with an azo linker. The results demonstrate the versatility of coupling a diazonium salt to a donoremethylidene nucleus in order to access novel materials with good thermal stabilities and high nonlinear optical responses. From hyper- Raleigh scattering studies it was found that the use of the well-known TCF acceptor yields the best performing chromophores, one of which has a dynamic first hyperpolarizability of 1900 × 10-30 esu at 800 nm. The results from this study suggest the use of pro-aromatic donors such as dihydrobenzothiazolylidene or dihydroquinolinylidene results in compounds with higher nonlinear optical responses than those containing donors based on either indoline or aniline. © 2013 Elsevier Ltd. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84874541421&partnerID=40&md5=42ef85af42c36aadea7d5c5174296410 |
| DOI | 10.1016/j.dyepig.2013.01.010 |
