Beads-on-String-Shaped Poly(azomethine) Applicable for Solution Processing of Bilayer Devices Using a Same Solvent

Abstract

Solvent-based deposition techniques for fabrication of organic field-effect transistors (OFETs) generally require orthogonal solvents for deposition of a conjugated polymer layer on a polymer gate insulator layer. Here, we found significantly reduced dissolution rate of the polymeric film in the same solvent after casting a homegeneous polymerization solution of para-bis­(3-aminopropyl)­hexaisobutyl-substituted T8 cage (1) with terephthalaldehyde. The limited dissolution rate in the solvent provided enough chance for fabrication of a regioregular poly­(3-hexylthiophene-2,5-diyl) (P3HT) layer on the present polymer films without using an orthogonal solvent. The rheological properties indicate that physical interaction between the polymer chains provides the significantly reduced dissolution rate after the deposition onto a substrate without any cross-linking treatments.

Coexistence of Optical Transparency, Hydrophobicity, and High Thermal Conductivity in Beads-on-String-Shaped Polyureas Induced by Disordered Hydrogen-Bond Networks

“…Thermal diffusivity was measured by using temperature-wave thermal analysis. 29 The results for all tested films are summarized in Table 1. Thermal conductivities of the films produced using 3a and 3b were higher than 0.5 W/ (m K).…”

“…1 H NMR (in CDCl 3 , 400 MHz): δ 7.67 (s, 2H), 6.60 (s, 2H), 6.39 (s, 4H), 3.80 (m, 12H), 3.14 (s, 4H), 1.61 (m, 4H), 1.22 (m, 18H), 0.64 (m, 4H) ppm. 29 Si NMR (in CDCl 3 , 80 MHz): δ −45.6 ppm.…”

Soluble network polymers based on trifluoropropyl‐substituted open‐cage silsesquioxane: Synthesis, properties, and application for surface modifiers

“…The materials are known for their well-defined structures containing rigidly inorganic cores with organic substituents in the peripheral. [8][9][10][11][12][13] Several types of POSS-based polymers have been prepared, including main-chain types from bifunctional POSS monomers [13][14][15][16][17][18][19] and network types from octa-functional POSSs. [20][21][22][23][24] However, POSSs for the former category are limited to certain organic substituents on their peripheral, while it is difficult to control the crosslinking of the latter type.…”

Stretchable Conductive Hybrid Films Consisting of Cubic Silsesquioxane-capped Polyurethane and Poly(3-hexylthiophene)

“…Polyhedral oligomeric silsesquioxane (POSS) has attracted greater interest as an “element-block”, which is a minimum functional unit containing various types of elements, for obtaining hybrid materials simply by mixing [49,50]. POSS has high chemical and thermal stability, bulky and rigid hydrophobic space and high designability according to its unique structure [51,52,53,54,55,56,57,58,59,60,61,62]. For example, simple loading of POSS onto polymers with or without covalent bonding reinforces thermal stability and rigidity [63].…”