Two new low-molecular mass organic gelators (LMOGs) based on fluorenone and 3,4,5-tris(dodecyloxy)benzamide auxiliary group (SOF and DOF) were synthesized and characterized. Their photophysical properties were investigated systematically via spectroscopic and theoretical methods. Both compounds exhibit ¹π,π* transitions in the UV region, and broad, structureless intramolecular charge transfer (¹ICT) absorption bands in the visible spectral region. Both compounds are emissive in solution at room temperature, which can be attributed to ¹ICT state. In addition, the gel properties of the two compounds in 10 solvents was studied. Compared to SOF with a single auxiliary group, DOF bearing two auxiliary groups are easier to form gels in different solvents. Fluorescence behavior and sensing performance studies of DOF xerogel film obtained by self-assembling demonstrated that this film is chemically stable, and reversible and selective to the presence of aniline vapor through the photoinduced electron transfer (PET) mechanism. The self-assembled properties of the LMOGs will be more conducive to the functionalization of photofunctional materials.

合成并表征了基于芴酮和3,4,5-三（十二烷氧基）苯甲酰胺辅助基团（SOF和DOF）的两种新型低分子有机胶凝剂（LMOG）。通过光谱学和理论方法对它们的光物理性质进行了系统的研究。两个化合物显示出^1个π，π*跃迁在UV区域中，而宽，无结构分子内电荷转移（^1个ICT）吸收带在可见光谱区。两种化合物在室温下均在溶液中发射，这可归因于¹ ICT状态。此外，还研究了这两种化合物在10种溶剂中的凝胶性质。与SOF相比由于具有一个辅助基团，带有两个辅助基团的自由度更容易在不同溶剂中形成凝胶。通过自组装获得的DOF干凝胶薄膜的荧光行为和传感性能研究表明，该薄膜化学稳定性好，可通过光致电子转移（PET）机理对苯胺蒸汽的存在进行可逆和选择性的选择。LMOG的自组装特性将更有利于光功能材料的功能化。