trans isomer

简明释义

反式异构体

英英释义

例句

1.The trans isomer 反式异构体 configuration can be identified using NMR spectroscopy.

可以通过核磁共振光谱法识别反式异构体的构型。

2.The trans isomer 反式异构体 of the compound is more stable due to less steric hindrance.

该化合物的反式异构体因较少的立体障碍而更稳定。

3.Some drugs are designed as a trans isomer 反式异构体 to improve efficacy and reduce side effects.

一些药物被设计为反式异构体，以提高疗效并减少副作用。

4.In organic chemistry, the trans isomer 反式异构体 can exhibit different physical properties compared to its cis counterpart.

在有机化学中，反式异构体与其顺式对应物可能表现出不同的物理性质。

5.The melting point of the trans isomer 反式异构体 is usually higher than that of the cis isomer.

反式异构体的熔点通常高于顺式异构体。

作文

In the field of chemistry, isomerism plays a crucial role in understanding the properties and behaviors of various compounds. One specific type of isomerism that is particularly interesting is geometric isomerism, which can be further divided into two categories: cis and trans isomers. The term trans isomer refers to a specific configuration of a molecule where similar or identical groups are positioned on opposite sides of a double bond or a ring structure. This arrangement can significantly influence the physical and chemical properties of the compound, making it essential for chemists to understand the implications of trans isomer formation.For example, consider the case of unsaturated fatty acids, which can exist as either cis or trans isomers. The trans isomer of a fatty acid has a straight-chain structure, which allows for tighter packing of the molecules. This packing leads to higher melting points and contributes to the solid state of certain fats at room temperature, such as margarine. In contrast, the cis isomer has a bent structure, resulting in lower melting points and a liquid state at room temperature, characteristic of oils. The differences between these two forms demonstrate how the spatial arrangement of atoms affects the physical state of substances.Moreover, the health implications of consuming trans isomers have been widely studied. Research has shown that trans isomers can contribute to increased levels of bad cholesterol (LDL) while decreasing good cholesterol (HDL) levels in the body. This imbalance can lead to serious health issues, including heart disease and stroke, prompting many countries to regulate or ban the use of artificial trans isomers in food products. The awareness of the health risks associated with trans isomer consumption has led to a significant shift in dietary habits, with consumers becoming more vigilant about reading food labels to avoid these harmful fats.In addition to their biological effects, trans isomers also play a vital role in industrial applications. For instance, certain polymers exhibit different properties based on whether they contain trans isomer or cis isomer configurations. The production of synthetic materials often requires a precise understanding of isomer types to ensure the desired characteristics, such as flexibility, strength, and durability. Engineers and material scientists must take into account the presence of trans isomers when designing new materials for construction, packaging, and numerous other applications.In conclusion, the concept of trans isomer is fundamental to both organic chemistry and applied science. Understanding the unique properties and implications of trans isomers allows chemists, health professionals, and engineers to make informed decisions regarding their use and impact on health and industry. As research continues to evolve, the significance of trans isomer configurations will undoubtedly remain a topic of interest, shedding light on the intricate relationship between molecular structure and function. Therefore, a comprehensive grasp of trans isomer is not only beneficial but essential for anyone engaged in the scientific community or concerned about health and wellness.

在化学领域，异构现象在理解各种化合物的性质和行为中起着至关重要的作用。几何异构是一种特别有趣的异构类型，可以进一步分为两类：顺式和反式异构体。术语反式异构体指的是一种特定的分子构型，其中相似或相同的基团位于双键或环结构的对侧。这种排列可以显著影响化合物的物理和化学性质，因此化学家必须理解反式异构体形成的含义。例如，考虑不饱和脂肪酸的情况，它们可以存在为顺式或反式异构体。脂肪酸的反式异构体具有直链结构，这使得分子能够更紧密地堆积。这种堆积导致熔点较高，并促成某些脂肪在室温下呈固态，如人造黄油。相比之下，顺式异构体则具有弯曲结构，导致熔点较低，在室温下呈液态，特点是油。两者之间的差异表明原子的空间排列如何影响物质的物理状态。此外，消费反式异构体的健康影响也得到了广泛研究。研究表明，反式异构体可以导致体内坏胆固醇（LDL）水平升高，同时降低好胆固醇（HDL）水平。这种失衡可能导致严重的健康问题，包括心脏病和中风，促使许多国家对食品中人工反式异构体的使用进行监管或禁令。对消费反式异构体相关健康风险的认识导致饮食习惯发生了显著变化，消费者变得更加警惕，仔细阅读食品标签以避免这些有害脂肪。除了生物效应外，反式异构体在工业应用中也发挥着重要作用。例如，某些聚合物根据是否含有反式异构体或顺式异构体配置表现出不同的性质。合成材料的生产通常需要对异构类型有精确的理解，以确保所需特性，如柔韧性、强度和耐用性。工程师和材料科学家在设计新材料用于建筑、包装及其他众多应用时，必须考虑反式异构体的存在。总之，反式异构体的概念对于有机化学和应用科学都是基础性的。理解反式异构体的独特性质和影响使化学家、健康专业人士和工程师能够做出有关其使用和对健康及工业影响的明智决策。随着研究的不断发展，反式异构体构型的重要性无疑将继续成为一个引人关注的话题，揭示分子结构与功能之间复杂的关系。因此，全面掌握反式异构体对任何参与科学界或关注健康与福祉的人来说，不仅有益而且至关重要。