作者:Elisabetta Greco、Abil E. Aliev、Valerie G. H. Lafitte、Kason Bala、David Duncan、Laura Pilon、Peter Golding、Helen C. Hailes
DOI:10.1039/c0nj00197j
日期:——
Cytosine modules have been investigated for applications in supramolecular quadruple hydrogen bonded arrays. Notably, the importance of the C-5–H in the formation of unfolded and folded arrays by substitution to C-5–F was established. In addition, the incorporation of different alkyl chain lengths at N-1 and N-9 indicated that longer alkyl chains give rise to more of the unfolded rotamer, with the chain length and degree of unsaturation at N-1 having the major effect. Methyl cytosine modules were also able to readily form hetero-associated Upy–UCyt dimers as efficiently as the hexyl cytosine modules and a polyadipate telechelic polymer was used to prepare cytosine polymers.
胞嘧啶模块已被研究用于超分子四重氢键阵列的应用。值得注意的是,C-5–H在通过替换为C-5–F形成未折叠和折叠阵列中的重要性得到了确立。此外,在N-1和N-9处引入不同的烷基链长度表明,较长的烷基链会产生更多的未折叠转态,而链长和N-1处的不饱和度对这一效果有主要影响。甲基胞嘧啶模块也能够像己基胞嘧啶模块一样高效地形成异构关联的Upy–UCyt二聚体,同时使用聚己二酸酯的末端接枝聚合物来制备胞嘧啶聚合物。