稳定自由基合成及光谱分析  

Synthesis and Spectral Analysis of Stable Free Radicals

作　　者：郭智 宋雨欣 王道远 GUO Zhi;SONG Yu-xin;WANG Dao-yuan(College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430061,China)

机构地区：[1]湖北大学化学化工学院,湖北武汉430061

出　　处：《安徽化工》2024年第6期135-138,共4页Anhui Chemical Industry

摘　　要：自由基由于其带有未成对的电子,反应活性较高,极易发生夺氧、夺氢、歧化、二聚等反应,因此很难对自由基进行分离检测,高活性和不稳定性也是限制自由基投入使用的主要原因。因此在基于自由基的研究中,如何有效地稳定和分离自由基,从而使其应用于有机材料、生物医学以及功能材料等领域,是目前最主要的关注点之一。基于三芳胺自由基母体,通过使用惰性基团占据活性反应位点的方式,一方面可以防止其发生二聚反应,另一方面惰性基团的连接使得未成对的电子中心发生反应,因而必须突破较大的空间位阻,从而使得自由基可以在溶液中稳定存在,并且通过紫外-可见吸收光谱以及电子顺磁共振光谱对其理化性质进行分析检测。Due to their unpaired electrons and high reactivity,free radicals are easy to take oxygen,hydrogen,dispropor-tionation,dimerization and other reactions,so it is difficult to separate and detect free radicals.High activity and instability are also the main reasons for limiting the use of free radicals.Therefore,in the research based on free radicals,how to effec-tively stabilize and separate free radicals,so that they can be applied to organic materials,biomedicine and functional ma-terials is one of the most important concerns at present.In this paper,based on the triaromatic amine radical parent group,by using inert group to occupy the active reaction site,on the one hand,dimerization can be prevented,on the other hand,the connection of inert group makes the reaction of unpaired electron center must break through a large steric hindrance,so that the free radical can exist stable in solution.The physical and chemical properties were analyzed by UV-vis absorption spectrum and electron paramagnetic resonance spectrum.

关 键 词：有机自由基 有机合成 稳定自由基 

分 类 号：O657[理学—分析化学]