- A method for preparing different Xin thiol (by machine translation)
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The present invention relates to the field of fine chemicals, in particular relates to a process for preparing thiols different Xin, it adopts isooctanol, hexabromo, DMAP catalyst, thiourea, polyesters sodium solution, such as sulfuric acid the original supplementary material to brominated, condensation, hydrolysis reaction, after the reaction, then drying and rectification to get different Xin thiol finished product. The preparation method is simple, few steps, yield as high as 94.16%, and in the bromination reaction not introduced in phosphorus and bromine from participating in the reaction reduces the security risk coefficient. (by machine translation)
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- Synthesis and optical characterization of unsymmetrical oligophenylenevinylenes
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An efficient route to highly soluble unsymmetrical oligo(phenylenevinylenes) (OPVs) has been developed. The OPVs are end-substituted with donor alkoxy and acceptor sulfonyl groups for charge polarization and incorporate a methacrylate unit suitable for co-polymerization. The absorption and excitation spectra of the OPVs and their precursors have been examined; vibronic features are noted, and π-system lengthening and introduction of polarizing substituents red-shift the spectral maxima.
- Freydank, Anke C,Humphrey, Mark G,Friedrich, Reiner W,Luther-Davies, Barry
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p. 1425 - 1432
(2007/10/03)
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