A novel aromatic polyazo compound 1,2-bis[4-((4,6-bis((4-phenyl diazenyl)phenoxy)-1,3,5- triazin-2-yl)oxy)phenyl]diazene with five azobenzene units was facilely constructed by dehydrochlorination reaction between p-hydroxyazobenzene, 4,4-dihydroxyazobenzene and cyanuric chloride under very mild conditions. Compared to azobenzene, the crystallinity of polyazo compound with five azobenzene units greatly decreased, while the thermostability remarkably improved. The maximal absorption wavelength of polyazo compound with five azobenzene units was close to that of azobenzene, but the molar extinction coefficient of polyazo compound with five azobenzene units was near five times of that of azobenzene. Polyazo compound with five azobenzene units exhibited typical reversible photoisomerization behaviours and was expected to be applied in photonic material areas.
一种新型含香味的多偶氮化合物1,2-双[4-((4,6-双((4-苯基偶氮基)苯氧)-
1,3,5-三嗪-2-基)氧)苯基]偶氮在非常温和的条件下,通过脱
氯化氢反应,由对羟基
偶氮苯、4,4-二羟基
偶氮苯和
三聚氯氰轻易构建而成。与
偶氮苯相比,含五个
偶氮苯单元的多偶氮化合物的结晶度大幅降低,而热稳定性显著提高。含五个
偶氮苯单元的多偶氮化合物的最大吸收波长接近
偶氮苯,但其摩尔消光系数接近
偶氮苯的五倍。含五个
偶氮苯单元的多偶氮化合物表现出典型的可逆光异构化行为,并有望应用于光子材料领域。