157338-85-7

Upstream product

• 823-40-5 2,6-toluenediamine 
• 623-47-2 propynoic acid ethyl ester 

Downstream Products

• 1384840-58-7 2,12-bis(4'-ethynyl-5'-bromo-9'-methyl-1',8'-diazaanthracene)-7-(4''-methoxyphenyl)-5,6,8,9-tetrahydrodibenzo[c,h]acridine 
• 1384840-61-2 C₃₁H₂₂N₂ 

Relevant academic research and scientific papers

Solid-state photopolymerization of a shape-persistent macrocycle with two 1,8-diazaanthracene units in a single crystal

A macrocyclic monomer with two opposing 1,8-diazaanthracene units is polymerized in a single crystal by a photochemically induced [4 + 4] cycloaddition reaction between neighboring monomers in which the anthracene units are stacked face-to-face at the critical Schmidt distance. The severe structural changes associated with this are minimized by the monomer design, wherein the linkers between the two opposing photoreactive 1,8-diazaanthracene units are connected to the 4 and 5 positions of the latter, whose spatial positioning is changed the least during dimerization. This helps to keep the monomer's overall shape basically unchanged during the polymerization. The resulting new rigid-rod polymer is soluble in its protonated form, and after counterion exchange with a surfactant, it can be depolymerized back into monomer upon relatively mild thermal treatment (120 °C) in an organic solvent.