ИСТИНА

One-step fabrication of multicomponent hybrid films arranged at nanoscale is among major challenges for organic electronics. Interfacial self-assembly of ultrathin hybrids makes it possible to combine organic and inorganic components with different solubilities as well as to control molecular packing in the ordered films. We developed a new supramolecular strategy for interfacial self-assembly of graphene oxide (GO), glutamine-substituted perylene diimide (PDI-glu), 10,12-pentacosadiynoic acid (PCDA) and zinc acetate through hydrogen and coordination bonding into three- and four-component hybrid nanofilms. We showed that the hybrids assembled through H-bonds can maintain the light-induced Förster energy transfer from the PDI-glu to polymerized PCDA (PDA) and then to GO leading to the fluorescence quenching. In the hybrids assembled through coordination bonding with zinc ions, the energy transfer proceeds only from PDI-glu to the PDA. An important characteristic of these ultrathin hybrids is their stability with respect to photobleaching of chromophores due to the acceptor properties of GO. The zinc-containing hybrids integrated with a hole transport layer exhibited photodiodes properties. The device based on four-component hybrid comprising both PDI-glu and PDA showed photocurrent/dark current ratio almost an order higher that of the three-component hybrid assembled with a single light absorber PDA. We believe that our results can be adapted for a wide variety of organic chromophores and polymerizable surfactants to develop high-efficient functional GO-based nanohybrids for organic electronics.