Active Participation of (1)pi sigma* States in the Photodissociation of Tyrosine and Its Subunits

作者：Iqbal Azhar; Stavros Vasilios G^*

来源：Journal of Physical Chemistry Letters, 2010, 1(15): 2274-2278.

DOI：10.1021/jz100814q

The ubiquitous nature of (1)pi sigma* states in biological molecules has been a prime focus in recent years. Understanding the role of this dissociative state in the amino acids and their respective chromophores following UV excitation would enable a step change toward establishing a better understanding of the mechanisms of photostability of larger peptides in the gas-phase. This letter presents the first evidence of the active involvement of (1)pi sigma* states in the H-atom elimination of the amino acid tyrosine and its subunit tyramine, following excitation at 200 nm.

• 出版日期2010-8-5