Microstructure elucidation of poly(9-ethyl-3-hydroxymethylcarbazolyl methacrylate) using two-dimensional NMR spectroscopy
作者:Ajaib Singh Brar、Sonia Gandhi、Meghna Markanday
DOI:10.1016/j.molstruc.2004.08.020
日期:2005.1
experiments. The configurational assignments for main chain methylene and α-methyl group were done by using 2D HSQC spectroscopy. Various geminal and vicinal couplings within the configurational sequences were assigned with the help of Total Correlation Spectroscopy (TOCSY). Two and three-bond order carbon/proton coupling were observed using Heteronuclear Multiple Bond Correlation (HMBC).
摘要 结合一维和二维核磁共振谱研究了以2,2'-偶氮二异丁腈(AIBN)为自由基引发剂的溶液聚合法制备的聚(9-乙基-3-羟甲基咔唑基甲基丙烯酸酯)的构型分配。-OCH 2 和-NCH 2 碳共振是使用无失真增强极化转移(DEPT)实验来区分的。主链亚甲基和 α-甲基的构型分配是通过使用 2D HSQC 光谱完成的。在总相关光谱 (TOCSY) 的帮助下分配了构型序列中的各种孪生和邻位耦合。使用异核多键相关 (HMBC) 观察到二键和三键碳/质子耦合。