Synthesis of Donor-σ-Perylenebisimide-Acceptor Molecules Having PEG Swallowtails and Sulfur Anchors
作者:Rajesh Kota、Ramakrishna Samudrala、Daniell Lewis Mattern
DOI:10.1021/jo301701a
日期:2012.11.2
poly(ethylene glycol) (PEG) swallowtails with 6 ether oxygens or with 4 ether oxygens to promote hydrophilicity in orienting LB monolayers, and alkyl swallowtails ending with sulfur anchors (thioacetate, thiol, or methyl disulfide) to stabilize attachment of the D-σ-A molecules to gold electrodes. The preparation and characterization of D-σ-A molecules containing combinations of these swallowtails with pyrene
排列在电极之间单层中的施主-σ-受体(D-σ-A)分子可用作分子整流器。使用per 3,4,9,10-四羧酸双酰亚胺(PBI)作为受体可使施主基团与一个酰亚胺氮和可溶的燕尾连接,通常较长(例如,C 19)烷烃连接在中链,另一端。这样的烷基尾促进了Langmuir-Blodgett(LB)单层的形成。我们已经使用了几种改良的燕尾来制造新的D-σ-A分子:具有6个醚氧或具有4个醚氧的聚(乙二醇)(PEG)燕尾以增强定向LB单层的亲水性,以及以硫锚定结尾的烷基燕尾(硫代乙酸盐,硫醇或二硫化甲基)来稳定D-σ-A分子与金电极的附着。描述了包含这些燕尾与pyr,二茂铁和四甲基苯二胺供体基团的组合的D-σ-A分子的制备和表征。