Yagai, Shiki; Kubota, Shun; Iwashima, Tomoyuki; Kishikawa, Keiki; Nakanishi, Takashi; Karatsu, Takashi; Kitamura, Akihide published the artcile< Supramolecular polymerization and polymorphs of oligo(p-phenylene vinylene)-functionalized bis- and monoureas>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is oligophenylenevinylene supramol polymerization polymorph.
Bis- and monoureas hybridized with the oligo(p-phenylene vinylene) (OPV) π-electronic segment and 3,4,5-tridodecyloxyphenyl wedge were synthesized and their supramol. polymerization in diluted solution, gel formation in concentrated solution, and liquid crystallinity in bulk state were investigated. Bisurea 1a featuring a hexamethylene linker showed the highest supramol. polymerization ability and formed tapelike nanofibers that can gelate various organic solvents. On the other hand, bisurea 1b featuring a dodecamethylene linker and monourea 2 showed a lower degree of supramol. polymerization, resulting in gel formations in a smaller variety of solvents. These results clearly reflect a high level of cooperativity between the two urea sites and the two OPV segments of la upon hydrogen-bonding and π-π stacking interactions, resp. When the gels of 1a, 1b, and 2 were dried, all the compounds self-organized into multilamellar superstructures. Thermal treatment of these lamellae at high temperatures induces columnar liquid-crystalline mesophases as a result of microsegregation between the rigid OPV parts and the molten aliphatic wedges. These results demonstrate that the present mol. constituent is very useful for fabricating dye-based functional assemblies providing nanoscale π-electronic fibers, and solvent-incorporated and bulk soft materials.
Chemistry – A European Journal published new progress about Fluorescence. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics