conjugated double bond

简明释义

共轭双键

英英释义

例句

1.In organic chemistry, a conjugated double bond (共轭双键) system can absorb light in the UV-visible range.

在有机化学中，共轭双键系统可以吸收紫外-可见光范围的光。

2.The stability of the molecule increases when it contains a conjugated double bond (共轭双键).

当分子含有一个共轭双键时，其稳定性增加。

3.The presence of a conjugated double bond (共轭双键) often leads to unique color properties in compounds.

在化合物中，共轭双键的存在通常会导致独特的颜色特性。

4.Many dyes and pigments contain conjugated double bonds (共轭双键) that contribute to their vivid colors.

许多染料和颜料含有共轭双键，这使它们具有鲜艳的颜色。

5.The reactivity of compounds can be influenced by the number of conjugated double bonds (共轭双键) they possess.

化合物的反应性可以受到其拥有的共轭双键数量的影响。

作文

In the study of organic chemistry, one of the fundamental concepts is the understanding of different types of bonds that can exist between atoms. Among these, the concept of a conjugated double bond is particularly important. A conjugated double bond refers to a system where two or more alternating single and double bonds occur in a molecule. This arrangement allows for the delocalization of electrons across the adjacent double bonds, which significantly influences the chemical properties and reactivity of the compound. The significance of conjugated double bonds can be observed in various natural and synthetic compounds. For instance, many pigments found in plants, such as chlorophyll, contain conjugated double bonds. These bonds are responsible for the absorption of light energy, which is crucial for the process of photosynthesis. The ability of conjugated double bonds to absorb light at specific wavelengths contributes to the vibrant colors seen in flowers and fruits, attracting pollinators and aiding in reproduction. Additionally, conjugated double bonds play a vital role in the stability of certain organic molecules. The delocalization of electrons in these systems results in lower energy states, making the molecules more stable than they would be with isolated double bonds. This stability is essential in the formation of complex structures such as proteins and nucleic acids, where conjugated double bonds help maintain the integrity of the molecular structure. In synthetic chemistry, the manipulation of conjugated double bonds has led to the development of various materials and drugs. For example, polymers that exhibit unique electrical and optical properties often contain conjugated double bonds. These materials are used in applications ranging from organic light-emitting diodes (OLEDs) to solar cells, showcasing the practical importance of understanding these bonds. Moreover, the presence of conjugated double bonds can also affect the reactivity of molecules. In reactions such as electrophilic addition, compounds with conjugated double bonds often react more readily compared to those without. This enhanced reactivity can be harnessed in the synthesis of new compounds, allowing chemists to design molecules with specific functions. In conclusion, the concept of conjugated double bonds is a cornerstone of organic chemistry that influences the properties and behaviors of a wide range of substances. From natural pigments in plants to synthetic materials used in modern technology, conjugated double bonds are integral to our understanding of chemical interactions. By studying these bonds, chemists can unlock new avenues for research and innovation, demonstrating the profound impact of this concept on both science and everyday life.

在有机化学的研究中，理解不同类型的原子之间的键合是一个基本概念。其中，共轭双键的概念尤为重要。共轭双键指的是分子中两个或多个交替的单键和双键的系统。这种排列使得电子能够在相邻的双键之间去局域化，这显著影响了化合物的化学性质和反应性。
共轭双键的重要性可以在许多天然和合成化合物中观察到。例如，植物中发现的许多色素，如叶绿素，含有共轭双键。这些键负责吸收光能，这对于光合作用过程至关重要。共轭双键在特定波长下吸收光的能力，有助于花朵和水果的鲜艳颜色，从而吸引授粉者并促进繁殖。
此外，共轭双键在某些有机分子的稳定性中也发挥着重要作用。这些系统中电子的去局域化导致能量状态降低，使得分子比带有孤立双键的分子更稳定。这种稳定性在蛋白质和核酸等复杂结构的形成中至关重要，其中共轭双键帮助维持分子结构的完整性。
在合成化学中，对共轭双键的操控导致了各种材料和药物的开发。例如，展现独特电气和光学特性的聚合物通常含有共轭双键。这些材料被用于从有机发光二极管（OLED）到太阳能电池的应用，展示了理解这些键的重要实际意义。
此外，共轭双键的存在还会影响分子的反应性。在如亲电加成等反应中，含有共轭双键的化合物往往比没有的化合物更容易反应。这种增强的反应性可以在新化合物的合成中被利用，使化学家能够设计具有特定功能的分子。
总之，共轭双键的概念是有机化学的基石，影响着广泛物质的性质和行为。从植物中的天然色素到现代技术中使用的合成材料，共轭双键对我们理解化学相互作用至关重要。通过研究这些键，化学家可以开启新的研究和创新途径，展示这一概念对科学和日常生活的深远影响。