Flat-on ambipolar triphenylamine/C60 nano-stacks formed from the self-organization of a pyramid-sphere-shaped amphiphile.
نویسندگان
چکیده
A giant amphiphile, which is constructed with an amorphous nano-pyramid (triphenylamine, TPA) and a crystalline nano-sphere (C60), was synthesized. Structural characterization indicates that this pyramid-sphere-shaped amphiphile (TPA-C60 ) forms a solvent-induced ordered phase, in which the two constituent units self-assemble into alternating stacks of two-dimensional (2D) TPA and C60 nano-sheets. Due to the complexity of the molecular structure and the amorphous nature of the nano-pyramid, phase formation was driven by intermolecular C60-C60 interactions and the ordered phase could not be reformed from the TPA-C60 melt. Oriented crystal arrays of TPA-C60 , which contain flat-on TPA/C60 nano-stacks, can be obtained via a PDMS-assisted crystallization (PAC) technique. The flat-on dual-channel supramolecular structure of TPA-C60 delivered ambipolar and balanced charge-transport characteristics with an average μe of 2.11 × 10-4 cm2 V-1 s-1 and μh of 3.37 × 10-4 cm2 V-1 s-1. The anisotropic charge-transport ability of the pyramid-sphere-shaped amphiphile was further understood based on the lattice structure and the lattice orientation of TPA-C60 revealed from electron diffraction analyses.
منابع مشابه
Flat-on ambipolar triphenylamine/C60 nano-stacks formed from the self-organization of a pyramid-sphere-shaped amphiphile† †Electronic supplementary information (ESI) available: 1H and 13C NMR spectra, TGA, DSC, XRD, simulated ED patterns, UV-Vis spectra, reduction and oxidation cyclic voltammetry curves. See DOI: 10.1039/c5sc04242a Click here for additional data file.
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ورودعنوان ژورنال:
- Chemical science
دوره 7 4 شماره
صفحات -
تاریخ انتشار 2016