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Citation: Zhan Chuan-Lang, Wang Duo-Yuan. A Solvatochromic Method for Determining The First-Order Hyperpolarizabilities of Several New stilbzolium-like Dyes[J]. Acta Physico-Chimica Sinica, ;1999, 15(04): 338-344. doi: 10.3866/PKU.WHXB19990410 shu

A Solvatochromic Method for Determining The First-Order Hyperpolarizabilities of Several New stilbzolium-like Dyes

1.
Institute of Photographic Chemistry,The Chinese Academy of Sciences,Beijing 100101

Received Date: 15 July 1998
Available Online: 15 April 1999

Using solvatochromic method the determination of the molecular first-order hyperpolarizabilities of three novel stilbazolium-like dyes and twoknown stilbazolium-like dyes: trans-(pyrrol-2yl) -4-(N-methyl-pyridinio) -stilbazolium iodide(PPSI), trans-(furan-2-yl) -4-(N-methyl - pyridinio)-stilbazolium iodide (FPSI), trans-(thiophene-2-yl) -4- (N-methyl-pyridinio)-stilbazolium iodide (TPSI) and trans-(N-methylpyrrol-2-yl) 4-(N-methyl-pyridinio)-stilbazolium iodide (MPPSI), trans(4-N, N-dimethylamino) -(4- N-methylpwidinio) -stilbazolium iodide(DAPSI) in 8 solvents is presented, and their molecular hyperpolarizabilities are as high as 10-26 -10-27 esu. We have proved that the molecular hyperpolarizabilities is in linear correlation with the electron excessivities of donors for PPSI,FPSI and TPSI in each solvent, this relation give us a way to design molecules that have larger hyperpolallzabilities. Furthermore, our experiments show that the molecules of the five stilbazolium-like dyes have...更多 a larger dipolemoment, when they are in ground state than in excited state.
- Stilbazolium-like dye,
- Pyridium,
- Hyperpolarizability,
- Solvatochromisml
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