Chain Length Effect of Dialkoxynaphthalene End-Capped Divinylbenzene for OTFT

Abstract

The new organic semiconductors which are composed of divinylbenzene core unit and alkoxynaphthalene on both sides, 1,4-bis-2-(6-octyloxy)naphthalen-2-ylvinylbenzene (BONVB), 1,4-bis-2-(6-decyloxy)naphthalen-2-ylvinylbenzene (BDNVB) and 1,4-bis-2-(6-dodecyloxy)naphthalen-2-ylvinylbenzene (BDDNVB) were synthesized by Wittig reaction. The structures of obtained BONVB, BDNVB and BDDNVB were confirmed by FT-IR and mass spectroscopy. UV-absorption of thin film showed H-aggregates and J-aggregates due to closely packed structure between adjacent molecules. The characterization of vacuum-evaporated films by Xray diffraction (XRD) and atomic force microscopy (AFM) showed that the chain length of alkoxy group affects the crystallinity and morphology. BONVB with octyloxy group showed the mobility of 0.011 cm 2 /V·s, on/off ratio of 1.31 × 10 5, and a subthreshold slope of 0.93 V.

Photocatalytical Degradation of Congo Red Azo Dye Using Phosphono-Aminoacid-Cd(II) Pendant Groups Grafted on a Polymeric Support

“…hν) 2 -hν (presented in the inset of Figure 5) are: E g1 = 4.4 eV; E g2 = 3.6 eV. These values are similar to those obtained in the literature for various macromolecular compounds containing vinyl groups in the molecule [15,16].…”

The polymeric upper bound for N 2 /NF 3 separation and beyond; ZIF-8 containing mixed matrix membranes

“…S5(A) and (B)). In order to confirm the successful ligand modification of our ICA-ZIF-8 particles, both FT-IR and 1 H NMR measurements were [63,64]. Also, the degree of the ICA ligand exchange is determined approximately 24.1-27.9 mol% based on our 1 H NMR measurements.…”