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近4～5年来,极化转移技术的发展吸引了许多学者的实验研究和理论分析。对谱线的多重性测定已经设计出许多脉冲序列。本文介绍了INEPT、DEPT(EPT)、反转INEPT、反转DEPT和适用于I(I_1)_mS(I_2)_n自旋系统(此处I_1、I_2为任意自旋数)的通用极化转移序列(UPT)的优缺点和影响因素,还介绍了最属上乘的编辑~(13)C亚谱的DEPT—季碳法;对于没有相移装置的较老的谱仪则介绍可采用各种J调制的SEFT和用多量子收集器使信号增涨的SEMUT脉冲序列来编辑~(13)C亚谱。
Nearly 4 ~ 5 years, the development of polarization transfer technology has attracted many scholars experimental research and theoretical analysis. Much of the pulse sequence has been designed for the determination of spectral multiplicity. In this paper, the general polarization transfer sequences of INEPT, DEPT (EPT), inverted INEPT, inverted DEPT and applicable to the I (I_1) _mS (I_2) _n spin system (where I_1 and I_2 are arbitrary spin numbers) (UPT), as well as the DEPT-quaternary carbon method, which is the most elegant editor- (13) C sub-spectrum. For older spectrometers without a phase shift device, the J The modulated SEFT and the SEMUT pulse sequence augmented with multiple quantum collectors were used to compile the ~ (13) C sub-spectra.