作者:Ian M. Jones、Hannah Lingard、Andrew D. Hamilton
DOI:10.1002/anie.201106241
日期:2011.12.23
The conformational equilibrium of a pH-dependent switch based on an intramolecularly H-bonded diphenylacetylene can be predictably biased by using electron-donating or -withdrawing groups. Furthermore, protonation of the electron-donating dimethylamino group converts it into an electron-withdrawing dimethylammonium cation with a concomitant switch in conformation.