quinone-imine dyes

In the study on the EI behaviour of five quinone-imine dyes, their M+2H peaks were found to be far intense than M peaks.

在研究五种醌亚胺染料时,发现它们的M+2H峰显著大于M峰,其强度比值(M+2H/M)随蒸发温度升高而增加。