Synthesis, Photophysical Behavior, and Electronic Structure of Push−Pull Purines
作者:Roslyn S. Butler、Pamela Cohn、Phillip Tenzel、Khalil A. Abboud、Ronald K. Castellano
DOI:10.1021/ja806348z
日期:2009.1.21
purines have been synthesized by the introduction of electron-accepting functional groups (A = CN, CO(2)Me, and CONHR) to the heterocyclic C(8) position to complement typical electron-donating substituents at C(2) (D(1)) and C(6) (D(2)). The donor-acceptor purines show significantly altered, and overall improvedphotophysicalproperties relative to their acceptor-free precursors (A = H); these include red-shifted