三苯胺及咔唑类衍生物的合成纳米尺度自组装和光学性质研究有机化学专业论文.docxVIP

摘要互作用可以改变分子间弱作用力，诱导形成多样的纳米结构形貌。实验结果进一 摘要 互作用可以改变分子间弱作用力，诱导形成多样的纳米结构形貌。实验结果进一 步表明不同的纳米结构具有不同的光学性质，可通过对纳米结构的调控实现对光 学性质的优化。 (3)设计合成一系列咔唑衍生物L4．L7，四种化合物都表现出优良的聚集诱 导发光性质。L4和L5分子通过引入氰基基团，分子间存在较强的C．N H作用力， 在聚集状态下分子结构刚性化，抑制了分子内旋转过程，导致荧光增强。此外， L4分子中通过亚甲基与苯并咪唑环相连，使得分子结构更加扭曲，有效的避免 了分子间兀．兀作用，使得L4分子比L5分子表现出更为优良的聚集诱导发光性质， 在相同测试条件下，L4分子最大荧光强度为L5分子的3．6倍。当引入硝基取代苯 乙腈基团，同样得到了具有优良聚集诱导发光性质的化合物L6和L7，由于分子 共轭程度增加及硝基基团的强吸电子能力，进一步调控化合物光学性质。通过系 统研究化合物聚集诱导发光性质，探索了聚集诱导发光的机理，总结了结构与性 质的相关性。 固 g：晤j、一固 g卜》j～ r L7 关键词：有机纳米材料；光学性质；三苯胺衍生物；咔唑衍生物；聚集诱导发光 II 万方数据 AbstractAbstract Abstract Abstract Functional organic nanomaterial is one of the most important branches in the field of nanoscience and technology．Organic molecules with functional diversity and structure tailorability flexibly self-assemble in the nanoscale and regulate the molecules properties，which have good potential applications in catalysis，bioimaging， drug delivery，chemical sensing and organic optoelectronic materials etc．The self-assembly process of organic materials be easily affected by the internal factors such as molecular geometry，dipole—dipole interaction，hydrogen bond，兀一兀 stacking interaction etc，and the external factors such as solvent，acid—base environment，metal ions etc，which can directly influence the nanostructure and properties．At the same time，the organic molecules with aggregation induced emission properties(AIE)have received increasing interest in recent years．To design and synthesize novel compounds with AIE properties and study its structure-activity relationship between structure and photophysical properties have important theoretical and practical value for the further development in the field of AIE．The main contents are as follows： (1)Triphenylamine has good electron donating ability，hole transport properties and excellent photoelectric properties，which can achieve functionalization by structural modification；carboxyl group is a kind of electron acceptor with good electron withdrawing ability．By coupling the