Discotic columnar liquid-crystalline polymer semiconducting materials with high charge-carrier mobility via rational macromolecular engineering

Abstract

Well-prepared side-chain discotic liquid crystal polymers with shorter spacers in ordered columnar phases are fascinating and promising cost-effective, solution-processable organic semiconducting materials for various potential optoelectronic device applications.

Molecular ejection transition in liquid crystal columns self-assembled from wedge-shaped minidendrons

“…In the hexagonal columnar phase (Col h ) wedge shaped molecules assemble to form supramolecular discs which in turn stack to form columns 39 .…”

Fluorophore core-engineered supramolecular discotic columnar liquid crystals with tunable fluorescent behavior

“…2b), which is characteristic of the formation of a columnar mesophase that exhibits a randomly oriented multidomain morphology. 22,23,[32][33][34] In contrast, slowly cooling at a rate of 1 1C min À1 led to an almost completely dark field of view, typical for homeotropically aligned domains, 29,31,34 for which the grain boundaries could be highlighted under 451 crossed polarizers (Fig. 2b).…”

An acrylate AIE-active dye with a two-photon fluorescent switch for fluorescent nanoparticles by RAFT polymerization: synthesis, molecular structure and application in cell imaging

“…Otherwise, the dihedral angle between the benzene rings of C21-C22-C23-C24-C25-C26 and C30-C31-C32-C33-C34-C35 is about 8.934 , and they are almost in the same plane, which endows TPMA dye the good conjugative effect. The bond length of C(27)-C (28) was between the C-C single bond and C]C double bond length due to its conjugation with phenyl rings of C21-C22-C23-C24-C25-C26 and C30-C31-C32-C33-C34-C35. From the bond length analysis, the bonds of O(1)-C(33) and O(2)-C(36) were respectively single bond and double bond, indicating the successful demethylation reaction of -OCH 3 and acylation reaction of -OH.…”

“…Therefore, RAFT polymerization is considered to be an important and effective way to prepare multifunctional copolymers, which is widely used in materials science, biology, electronics, etc. [26][27][28][29][30][31][32] For example, amphiphilic block copolymer p(HEMA-b-Azo-IEM) was successfully prepared by RAFT polymerization, in water solution, which selfassembled into micelles, and its size and shape changed with the different light irradiation (visible/UV light). 33 Phenylboronic acid derivatives have been widely used in the synthesis of glucose-sensitive materials in the eld of biomedicine due to their specic interaction with biological molecules such as glucose and glycoproteins.…”