substituent

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮团引入改善了8-羟喹啉生色能力，并且在乙腈溶液中随着取代变为萘和蒽时，化合物吸收光谱发生红移。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响合物等规度因素主要是取代极性效应。

These clusters show different fluxional behaviour and ligands according to various substituent around the metals of osmium.

根据羰配体取代同,该类簇合物中小分子移动种类及方式也有所同。

It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.

坚牢度和光谱特性,发现磺酰胺和在它氮原子上取代会影响该类染料性能。

The aurone compounds are generally on one plane ,and they have a bigger conjugate system .The inducement of hydroxyl substituents has little influence on their own geometries .

橙酮类化合物分子共面性较强,为较大共轭体系,取代羟接入,对橙酮类化合物共面性影响大。