...了一系列以均三嗪为核,二取代三苯胺为枝的3+2体系超支化聚合物,并以不同基团进行封端。其中,均三嗪核心作为吸电子基团(Acceptor),三苯胺作为给电子基团(Donor),碳碳双键作为连接π桥,形成一个超支化的(D-π-A-π-D)聚合物体系,并且以吸电子基团(醛基)和给电子...
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探讨了给电子基团对电子吸收光谱的影响。
The effect of the electron-donating groups on the electronic spectrum was investigated.
拉电子基团能使碳负离子稳定，也使C—H键的酸性增强。
Drawing electron group can stabilize carbon anion, and enhance the acid of key C-H.
吸电子基团使还原电位正移，推电子基团使还原电位负移。
Usually, the reduction potential is shifted to more positive by electron-attracting groups and to more negative by electron-repulsing groups.
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