Single Crystal Field Effect Transistor of a Y-Shaped Ladder-Type Oligomer

Abstract

We report herein the X-ray single crystal structural analysis, density functional theory calculations, and electrical characteristics in single crystal field effect transistor configuration of the Y-shaped ladder-type oligomer 15,16dithia-5,10-diazanaphtho[2,3-alpha]benzo[c]anthracene. The molecule is quasiplanar, crystallizes in the monoclinic P2 1 /c space group with four molecules in the unit cell and forms stacks along the b direction with intermolecular distances of 3.83 Å. Vapor phase transport crystal growth yielded large plate-shaped shiny purple crystals more than 2 cm long which allowed for construction of single crystal FET. Room temperature linear mobility of 0.05 cm 2 /V was obtained. The transfer characteristics of the device within the temperature range of 250-295 K were also measured. The activation energy for carrier detrapping was found to be 540 meV, much higher than most other oligoacene crystals known to date. This is probably due to the relatively large separation between molecules along the c axis of the crystal.

Structural parameter-modulated nonlinear optical amplitude of acceptor–π–D–π–donor-configured pyrene derivatives: a DFT approach

“…43 The magnitude of the band gap describes the experience of ICT from the donor to acceptor part facilitated via pi linkers, and provides information about the NLO structure related function associations. [44][45][46] The contour sides of the frontier molecular orbitals (FMOs) are used to describe the transference of charges, as displayed in Fig. 3.…”

Organic single crystal field-effect transistors: advances and perspectives

“…Other p-type single-crystal semiconductors have been used in SCFETs including fused-ring structures compounds, 20,90 phthalocyanine, 15,44,46,91,92 perylene, 93 a-6T, 39,94 rigid polymer 41,95 and others. [96][97][98][99][100][101][102][103] Wang and coworkers 96 reported a high-performance organic semiconductor of perylo [1,12- b,c,d]thiophene (PET). The strong S/S short contacts (3.51 A) in PET single crystals induced a double-channel structure, which was expected to obtain effective charge carrier transport and high mobility.…”

Dicyanovinyl-Substituted Oligothiophenes

“…Detailed synthetic procedures are given in the Supporting Information. Crystals suitable for X-ray structural analysis of DCV-1T-DCV and DCV-2T-DCV·CH 2 Cl 2 were grown from dichloromethane, whereas solvent-free pseudo polymorph crystals of DCV-2T-DCV were grown by means of physical vapor transport (PVT) in a horizontal quartz tube with a temperature gradient of ∼10 °C/cm . Their structural data are summarized in Table .…”