optical activity

简明释义

旋光性

英英释义

例句

1.Different enantiomers exhibit different optical activity, which is crucial in pharmaceuticals.

不同的对映体表现出不同的光学活性，这在制药中至关重要。

2.The optical activity of a solution can be measured using a polarimeter.

可以使用偏振仪测量溶液的光学活性。

3.The study of optical activity is essential in understanding how chiral molecules interact with light.

研究光学活性对于理解手性分子如何与光相互作用至关重要。

4.Understanding optical activity helps scientists design better drugs.

理解光学活性帮助科学家设计更好的药物。

5.Chemists often use optical activity to determine the purity of a substance.

化学家常常利用光学活性来确定物质的纯度。

作文

Optical activity is a fascinating phenomenon observed in certain substances, particularly in chiral molecules. These molecules are unique because they exist in two non-superimposable mirror images, known as enantiomers. When plane-polarized light passes through a solution containing chiral molecules, it rotates the plane of polarization either to the left or to the right. This ability to rotate polarized light is what we refer to as optical activity (光学活性). The extent and direction of this rotation depend on several factors, including the concentration of the chiral substance, the path length of the light, and the specific type of enantiomer present.The study of optical activity (光学活性) is crucial in various fields, especially in chemistry and pharmacology. Many drugs are chiral, meaning that their efficacy and safety can significantly differ between enantiomers. For instance, one enantiomer of a drug may be therapeutic, while its mirror image could be harmful or inactive. Therefore, understanding the optical activity (光学活性) of these compounds helps chemists and pharmacists determine the correct form of a medication to use.In laboratory settings, scientists often employ polarimetry to measure optical activity (光学活性). This technique involves passing polarized light through a sample and measuring the angle of rotation caused by the chiral molecules. The results can provide valuable information about the concentration of the enantiomers in the solution and help in the characterization of new compounds.Moreover, optical activity (光学活性) plays a significant role in natural processes as well. For example, many biological molecules, such as amino acids and sugars, exhibit chirality and consequently optical activity (光学活性). The specific interactions between these chiral molecules and their biological targets, like enzymes and receptors, are often dictated by their optical activity (光学活性). This highlights the importance of chirality in the biological world and its implications for the development of new therapeutic agents.In conclusion, optical activity (光学活性) is an essential concept in understanding the behavior of chiral molecules. Its applications span across various scientific disciplines, from drug development to biochemistry. As research continues to advance, the significance of optical activity (光学活性) will likely grow, leading to new discoveries and innovations in both science and medicine.