对甲基酚醛树脂热裂解产物的固体^（13）CNMR

Solid-State￣(13) C NMR Study of Pyrolytic Materials of Para-Cresol-formaldehyde Resin

对甲基酚醛树脂热裂解产物的固体^（１３）ＣＮＭＲ谢德民，张建国，王存国，王荣顺（东北师范大学化学系，长春，１３００２４）关键词对甲基酚醛树脂，裂解，固体^（１３）Ｃ，ＮＭＲ酚醛树脂经热裂解制备的聚并苯导电材料在空气中稳定，由裂解温度可控制碳化程度，其本...

?13)C high-resolution solid-state NMR study has been performed with respect to polyacenic materials which were prepared by pyrolytic treatment of para-cresol-formaldehyde resin at different temperatures,The results show that with the increase of pyrolysis temperature,as the reaction of intermolecular dehydration and intramolecular dehydrogenation take place,a greater condensed aromatic ring is formed,so the chemical shifts exhibit an up-field shift.When the pyrolytic temperature reaches 900-1100℃,the main peak is composed of a group spectral lines continuously.This change can not be a chemical shift,it seems to be a Knight shift.