Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant Street, Amherst, MA 01003, USA.
Chem Commun (Camb). 2013 Sep 4;49(68):7519-21. doi: 10.1039/c3cc43797c.
We show that ultrasound-induced mechanical force isomerizes an azobenzene centered within a poly(methyl acrylate) polymer from cis to trans configuration without cleaving the azo bond. The isomerization rate was not altered by the polarity of the solvent indicating that the isomerization occurs through a non-polar, inversion transition state.
我们证明，超声诱导的机械力使偶氮苯在聚甲基丙烯酸酯聚合物中从顺式构象到反式构象发生异构化，而不打断偶氮键。溶剂的极性并不改变异构化速率，这表明异构化是通过非极性、反转过渡态进行的。
