substituent
英 [sʌb'stɪtʃʊənt] 美 [sʌb'stɪtʃʊrnt]

n.

取代；

adj.

取代的；

英英释义

Substituent

• In organic chemistry and biochemistry, a substituent is an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon. The terms substituent, side-chain, group, branch, or pendant group are used almost interchangeably to describe branches from a parent structure, though certain distinctions are made in the context of polymer chemistry.

以上来源于:Wikipedia

双语例句

用作名词(n.)

1. The substituent effects of ethoxy groupswere studied on the chemical composition and properties of plasma polymers.
   研究了乙氧取代基对聚合物化学组成和性能的影响。
2. The fluorescence intensity of porphyrin also relates to the substituent positions on the phenyl groups.
   此外，荧光强度还与卟啉的苯环上取代基的取代位置有关。

权威例句

Electrophilic Substituent Constants
Substituent constants for correlation analysis in chemistry and biology
A New Substituent Constant, π, Derived from Partition Coefficients
Aromatic substituent constants for structure-activity correlations
Field and resonance components of substituent effects
The relationship between proton-proton NMR coupling constants and substituent electronegativities—I : An empirical generalization o...
Relationship between proton–proton nmr coupling constants and substituent electronegativities. III. Conformational analysis of...
Relationship between proton–proton nmr coupling constants and substituent electronegativities. III. Conformational analysis of...
The relationship between proton–proton NMR coupling constants and substituent electronegativities. II—conformational analysis of t...
Predicting the activity of phenolic antioxidants: theoretical method, analysis of substituent effects, and application to major fami...