anionic group

简明释义

阴离子团;

英英释义

例句

1.An anionic group can improve the interaction between polymers and water.

阴离子基团可以改善聚合物与水之间的相互作用。

2.In surfactants, the anionic group plays a crucial role in reducing surface tension.

在表面活性剂中，阴离子基团在降低表面张力方面起着至关重要的作用。

3.The presence of an anionic group in the molecule enhances its solubility in water.

分子中存在的阴离子基团增强了其在水中的溶解性。

4.The effectiveness of the dye is often linked to the type of anionic group it contains.

染料的有效性通常与其所含的阴离子基团类型有关。

5.Many detergents contain an anionic group that helps lift dirt away from surfaces.

许多洗涤剂含有阴离子基团，有助于将污垢从表面去除。

作文

In the field of chemistry, understanding the behavior and properties of ions is crucial. One important concept that arises in this context is the notion of an anionic group. An anionic group refers to a collection of atoms that carries a negative charge, making it a vital component in various chemical reactions and compounds. The presence of an anionic group can significantly influence the characteristics of a molecule, such as its solubility, reactivity, and overall stability.An example of an anionic group is the sulfate ion (SO₄²⁻). This ion consists of one sulfur atom surrounded by four oxygen atoms, and it carries a -2 charge. Sulfate is commonly found in many salts, such as sodium sulfate (Na₂SO₄) and calcium sulfate (CaSO₄). The ability of an anionic group like sulfate to interact with cations (positively charged ions) allows for the formation of various ionic compounds that have numerous applications in industries ranging from agriculture to pharmaceuticals.Another significant anionic group is the carboxylate group (COO⁻), which is derived from carboxylic acids when they lose a proton (H⁺). This group plays a critical role in organic chemistry, particularly in the formation of esters and amides. The reactivity of carboxylate-containing compounds is often enhanced due to the presence of the anionic group, allowing them to participate in nucleophilic substitution reactions.The study of anionic groups extends beyond organic and inorganic chemistry. In biochemistry, for instance, the structure and function of DNA are heavily influenced by the presence of anionic groups. The phosphate backbone of DNA contains multiple anionic groups, which contribute to the overall negative charge of the DNA molecule. This characteristic is essential for the interaction of DNA with proteins and other molecules, facilitating processes such as replication and transcription.Moreover, the presence of anionic groups in surfactants is vital for their functionality. Surfactants are compounds that lower the surface tension between two liquids or between a liquid and a solid. Many surfactants contain anionic groups, which enable them to interact with water and oil, thus allowing them to effectively emulsify and disperse substances. This property is widely exploited in household cleaning products, personal care items, and industrial applications.In conclusion, the concept of an anionic group is fundamental in various branches of science. From influencing the properties of salts and organic compounds to playing a crucial role in biological systems, anionic groups are integral to our understanding of chemical interactions. As we continue to explore the vast world of chemistry, the significance of anionic groups will undoubtedly remain a key area of focus, paving the way for new discoveries and innovations in science and technology.

在化学领域，理解离子的行为和特性至关重要。在这个背景下，一个重要的概念是阴离子基团的概念。阴离子基团指的是一组带有负电荷的原子集合，使其成为各种化学反应和化合物中的重要组成部分。阴离子基团的存在可以显著影响分子的特征，如其溶解度、反应性和整体稳定性。一个阴离子基团的例子是硫酸根离子(SO₄²⁻)。这个离子由一个硫原子和四个氧原子组成，并带有-2的电荷。硫酸根通常存在于许多盐中，例如硫酸钠(Na₂SO₄)和硫酸钙(CaSO₄)。像硫酸根这样的阴离子基团与阳离子（带正电荷的离子）相互作用的能力，允许形成具有众多应用的各种离子化合物，涉及农业到制药等多个行业。另一个重要的阴离子基团是羧酸根基团(COO⁻)，它是当羧酸失去一个质子(H⁺)时衍生出的。这个基团在有机化学中起着关键作用，特别是在酯和酰胺的形成中。由于阴离子基团的存在，含羧酸根的化合物的反应性往往增强，使它们能够参与亲核取代反应。对阴离子基团的研究超越了有机和无机化学。在生物化学中，例如，DNA的结构和功能受到阴离子基团存在的重大影响。DNA的磷酸骨架包含多个阴离子基团，这使得DNA分子整体带有负电荷。这一特性对于DNA与蛋白质和其他分子的相互作用至关重要，促进了复制和转录等过程。此外，表面活性剂中阴离子基团的存在对其功能至关重要。表面活性剂是降低两种液体之间或液体与固体之间表面张力的化合物。许多表面活性剂含有阴离子基团，使它们能够与水和油相互作用，从而有效地乳化和分散物质。这一特性被广泛应用于家用清洁产品、个人护理用品和工业应用中。总之，阴离子基团的概念在科学的各个分支中都是基础。从影响盐和有机化合物的性质，到在生物系统中发挥关键作用，阴离子基团是我们理解化学相互作用的核心。随着我们继续探索广阔的化学世界，阴离子基团的重要性无疑将继续成为关注的重点，为科学和技术的新发现和创新铺平道路。