Co-crystallization of oxadiazole-bridged pyridyl-N-oxide building modules with R-aromatics (R = –OH, –NH2 and –COOH)
作者:Gui-Ge Hou、Jian-Ping Ma、Le Wang、Ping Wang、Yu-Bin Dong、Ru-Qi Huang
DOI:10.1039/b923810g
日期:——
The reaction of oxadiazole bridging pyridyl-N-oxides (2,5-bis(4-pyridyl-N-oxide)-1,3,4-oxadiazole (A1) and 2-(4-pyridyl)-5-(4-pyridyl-N-oxide)-1,3,4-oxadiazole (A2)) with different substituted aromatics (R-aromatics, R = âOH, âNH2, âCOOH) have been investigated. Eight new organic co-crystals of 1â8 were synthesized and characterized by elemental analysis, FTIR spectroscopy, 1H NMR and single-crystal X-ray diffraction. The results display the distinct substituent effect on the hydrogen-bonded self-assembly systems. In addition, the luminescent properties of A1âA2 and 1â8 were investigated in the solid state.
研究了噁二唑桥接吡啶-N-氧化物(2,5-双(4-吡啶基-N-氧化物)-1,3,4-噁二唑(A1)和 2-(4-吡啶基)-5-(4-吡啶基-N-氧化物)-1,3,4-噁二唑(A2))与不同取代芳烃(R-芳烃,R = âOH、âNH2、âCOOH)的反应。通过元素分析、傅立叶变换红外光谱、1H NMR 和单晶 X 射线衍射,合成了 8 种新的 1â8 有机共晶体并对其进行了表征。结果表明,取代基对氢键自组装体系有明显的影响。此外,还研究了 A1âA2 和 1â8 在固态下的发光特性。