新型萘/苝酰亚胺取代丁二炔衍生物的合成及拓扑聚合

经5步反应制备了萘/苝酰亚胺取代的端炔和碘炔单体, 通过Sonagashira偶联反应合成了2个新型对称丁二炔单体浅黄色粉末2-4-(4-{4-7-(庚-3-基)-1,3,6,8-四氧亚基-1,2,3,6,7,8-六氢异喹啉并6,5,4-def]异喹啉-2-基]苯基}丁-1,3-二炔基)苯基]-7-(辛-4-基)-1,2,3,6,7,8-六氢异喹啉并6,5,4-def]异喹啉-1,3,6,8-四酮(diNDI)和暗红色粉末2-4-(4-{4-1,3,8,10-四氧亚基-9-(二十三烷-12-基)-1,2,3,8,9,10-六氢异喹啉并6',5',4':9,1,2]蒽并6,5,10-def]异喹啉-2-基]苯基}丁-1,3-二炔基)苯基]-9-(二十三烷-12-基)-1,2,3,8,9,10-六氢异喹啉并6',5',4':9,1,2]蒽并 6,5,10-def]异喹啉-1,3,8,10-四酮(diPDI), 产率分别达60%和70%. 由于NDI和PDI基元的强吸电子作用, diNDI和diPDI表现较低的最低未占分子轨道(LUMO)能级, 分别为?3.80和?3.70 eV. 单晶数据表明, 萘酰亚胺基元的分子间氢键及π-π作用对diNDI分子堆积结构起主导作用, diNDI呈层状堆积模式. 由差示扫描量热(DSC)实验结果可知, diNDI丁二炔经加热可发生固态聚合. 加热条件下diNDI的紫外-可见吸收光谱及原位拉曼光谱特征峰以及在波长532 nm激光强度为10%的辐照条件下原位拉曼光谱特征峰的变化均表明diNDI微纳晶发生了非常规的1,4-加成聚合, 并且新生成的共轭主链是无序的, 同时发现激光辐照条件下更易促进聚合反应.

Synthesis and Topochemical Polymerization Study of Naphthalene/perylene Imides Substituted Diacetylene Derivatives

Naphthalene/perylene imide substituted terminal alkyne and iodide monomers were prepared by a five-step reaction. Two new symmetric diacetylene monomers， pale yellow powder 2-（2-ethylhexyl）-7-｛4-［7-（2-ethylhexyl）-1，3，6，8-tetraoxo-1，2，3，3a，5a，6，7，8-octahydroisoquinolino［6，5，4-def］isoquinolin-2-yl］buta-1，3-diynyl｝- 1，2，3，6，7，8-hexahydroisoquinolino［6，5，4-def］isoquinoline-1，3，6，8-tetraone（diNDI） and deep red powder 9-｛4-［1，3，8，10-tetraoxo-9-（tricos-12-yl）-1，2，3，8，9，10-hexahydroisoquinolino［6'，5'，4'：9，1，2］anthra［6，5，10-def］isoquinolin-2-yl］buta-1，3-diynyl｝-2-（tricos-12-yl）-1，2，3，8，9，10-hexahydroisoquinolino［6'，5'，4'：9，1，2］anthra［6，5，10-def］isoquinoline-1，3，8，10-tetraone（diPDI）， were synthesized by the Sonagashira coupling reaction with yields up to 60% and 70%， respectively. Due to the strong electron-withdrawing of NDI and PDI side groups， they exhibited deeper lowest unoccupied molecular orbital energy levels of -3.80 and -3.70 eV， respectively. The single crystal data of diNDI showed that the intermolecular hydrogen bonding and π-π interaction of naphthalene imide units mediated the intermolecular assembly of diNDI， showing a layer packing model. The differential scanning calorimetry results indicated that diNDI polymerized in solid-state under heating. The changes in the UV-Vis absorption and in situ Raman spectra of diNDI under heating and 532 nm-10% laser irradiation condition indicated that diNDI microcrystals might react to form a distorted structure instead of a fully conjugated backbone that usually resulted from the regular 1，4-addition. The laser irradiation conditions were found to facilitate the polymerization reaction.