Self molecular dyads

In their pioneering approach, Rabe etal. developed a prototype single molecule chemical-field-effect transistor (CFET) based on self-assembly of a molecular dyad (Figure 20a) which consists of an electron rich hexa-/7m-hexabenzocoronene (HBC) core covalently linked to six electron deficient anthraquinone (AQ) subunits. Figure 20(b) displays an STM image of monolayer... 

Gayathri SS, Patnaik A (2006) Electrical rectification from a fullerene[60]-dyad based metal-organic-metal junction. Chem Commun (Cambridge, UK) 1977-1979 Matino F, Arima V, Piacenza M et al (2009) Rectification in supramolecular zinc porphyrin/ fulleropyrrolidine dyads self-organized on gold(lll). Chemphyschem 10 2633-2641 Acharya S, Song H, Lee J et al (2009) An amphiphilic Cgo penta-addition derivative as a new U-type molecular rectifier. Org Electron 10 85-94... 

Other electronic components can be attached onto the HBC core and the self-assembled side-by-side monolayers provide opportunities to fabricate single molecular devices at the solid/liquid interface. The covalently tethered HBC and pyrene units co-assemble to form stable nano-phase-separated arrays [96]. A significantly different packing of the adlayer of the HBC-pyrene dyad 87 on the basal plane of the HOPG surface has been obtained, as shown in Fig. 3.26. This STM current... 

Figure 3.26. Molecular structure of HBC-Pyrene dyad and its nano-phase separated self-assembled monolayer on the HOPG surface.

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