Functional polyacetylenes containing pyridinium side groups（PPyA-MX,X = Br and I） were successfully synthesized.Spectroscopic techniques such as ^1H-NMR,^（13）C-NMR,and FTIR spectroscopy were used to characterize the structure of the obtained polymers.The characterization data were well consistent with the expected macromolecular structures.PPyA-MI had good solubility in polar organic solvents and low solubility in water,while PPyA-MBr had good solubility in both polar organic solvents and water.
Regioseletive 1,3-dipolar polycycloadditions of 4,4'-isopropylidenediphenyl dipropiolate (1) and tetraphenylethene (TPE)-containing diazides (2) are carried out in polar solvents such as DMF/toluene at a moderate temperature of 100℃ for 6 h,producing poly(aroxycarbonyltriazole)s (PACTs) P3 with high molecular weights (Mw up to 23900) and regioregularities (F1,4 up to ～90%) in high yields (up to ～99%).These metal-free click polymerizations can propagate smoothly in an open atmosphere without protection from oxygen and moisture.The obtained polymers are soluble in common organic solvents and thermally stable at temperatures up to 375℃.Thanks to their contained TPE moieties,the PACTs show aggregation-induced emission and can serve as fluorescent chemosensors for superamplified detection of explosives.
LI HongKunMEI JuWANG JianZHANG ShuangZHAO QiuLiWEI QiangQIN AnJunSUN JingZhiTANG Ben Zhong
A new bis(aroylacetylene) containing tfiazole and fluorene moieties is synthesized by click chemistry. Polycyclotrimerization of the monomer is catalyzed by piperidine in refluxed dioxane,furnishing a regioregular poly(aroylarylene) in a satisfactory yield.The hyperbranched structure of the polymer is characterized spectroscopically with satisfactory results.The polymer enjoys no metal detriment and is soluble in common organic solvents such as tetrahydrofuran (THF),chloroform,dichloromethane (DCM),and N,N-...
