کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
177621 | 458991 | 2007 | 6 صفحه PDF | دانلود رایگان |

Nonlinear optical chromophores with nitro acceptors have been designed and synthesized. The first-order hyperpolarizability of the chromophores was determined using hyper-Rayleigh scattering; the decomposition temperature was determined using DSC and the absorption spectra of the compounds were measured. The nonlinear optical properties of the chromophores were discussed; the first-order hyperpolarizabilities of chromophores 3 and 4 come from their two-dimensional structure, the length of the conjugation bridge and intramolecular proton transfer. The strong dihydroxyl donor of chromophores 1 and 2 expanded the first-order hyperpolarizabilities, the measured βHRS values of chromophores 1 and 2 at 1064 nm are 211 × 10−30 esu and 177 × 10−30 esu, respectively. These NLO-chromophores exhibit higher decomposition temperature in the range of 290–330 °C.
Journal: Dyes and Pigments - Volume 75, Issue 2, 2007, Pages 460–465