115270-52-5Relevant academic research and scientific papers
Steric Effects in 4-Dimethylaminoazobenzenes and Their Protonated Species
Griffiths, John,Roospeikar, Ehizan,Thomasson, Jeffrey
, p. 3722 - 3739 (2007/10/02)
The effects of steric crowding in the amino-substituted ring of the 4-dimethylaminoazobenzene system have been examined by electronic absorption spectroscopy, using methyl substituents to induce loss of planarity.The most significant effects are produced by methyl groups ortho to the amino group.No evidence for electronic buttressing could be found in the case of dyes with electron withdrawing groups in the second benzene ring.The effects of steric crowding in the protonated forms of the dyes have also been examined.
