bathochromic shift

简明释义

红移

英英释义

例句

1.In our experiment, we observed a bathochromic shift when the temperature was increased.

在我们的实验中，当温度升高时，我们观察到了红移现象。

2.Chemists often use bathochromic shift as a tool to study electronic transitions in molecules.

化学家常常利用红移作为研究分子电子跃迁的工具。

3.A bathochromic shift can be indicative of an interaction between the dye and the metal ion.

一个红移可能表明染料与金属离子之间的相互作用。

4.The bathochromic shift indicates that the compound has become more conjugated.

该红移表明化合物的共轭程度增加了。

5.The addition of a solvent caused a significant bathochromic shift in the absorption spectrum of the dye.

溶剂的添加导致染料的吸收光谱发生了显著的红移。

作文

In the field of chemistry and physics, understanding the behavior of light and its interaction with matter is crucial. One important concept that emerges in this context is the bathochromic shift, which refers to the phenomenon where a substance absorbs light at longer wavelengths than it did previously. This shift can be observed in various materials, particularly in organic compounds and transition metal complexes. The bathochromic shift is often indicative of changes in the electronic structure of a molecule, usually resulting from alterations in the molecular environment or the presence of different substituents. To grasp the significance of the bathochromic shift, one must first understand the basic principles of spectroscopy. When light interacts with a molecule, it can cause electrons to move from a lower energy state to a higher energy state. The specific wavelengths of light absorbed correspond to the energy differences between these states. If a molecule experiences a bathochromic shift, it means that the energy required to excite an electron has decreased, allowing it to absorb light at longer wavelengths, typically moving from the ultraviolet region into the visible spectrum.A practical example of the bathochromic shift can be seen in the study of dyes and pigments. For instance, when a dye molecule is dissolved in a solvent, the interactions between the dye and solvent can lead to a bathochromic shift. This effect can be attributed to the solvation process, where the solvent molecules stabilize certain electronic states of the dye, effectively lowering the energy required for electronic transitions. As a result, the dye may exhibit a vibrant color change, which is not only visually striking but also valuable in applications such as chemical sensors and indicators.Moreover, the bathochromic shift is not limited to solutions; it can also occur in solid-state materials. For example, when a polymer is doped with a chromophore, the surrounding polymer matrix can influence the electronic properties of the chromophore, leading to a bathochromic shift. This phenomenon can be exploited in the development of advanced optical materials, such as organic light-emitting diodes (OLEDs) and photovoltaic cells, where precise control over light absorption and emission is essential.In summary, the bathochromic shift is a fundamental concept in the study of light-matter interactions, providing insights into the electronic properties of various substances. By observing how materials respond to changes in their environment, scientists can gain a deeper understanding of molecular behavior and utilize this knowledge in practical applications. Whether in the realm of organic chemistry, materials science, or photonics, the bathochromic shift serves as a powerful tool for researchers aiming to manipulate light and enhance material performance. Its implications extend beyond theoretical studies, influencing real-world technologies that rely on precise optical characteristics. Understanding this concept is essential for anyone looking to delve into the intricate world of molecular interactions and their consequences on the properties of materials.

在化学和物理学领域，理解光的行为及其与物质的相互作用至关重要。在这种情况下，一个重要的概念是bathochromic shift，指的是一种物质吸收光的波长比之前更长的现象。这种变化可以在各种材料中观察到，特别是在有机化合物和过渡金属配合物中。bathochromic shift通常表明分子电子结构的变化，通常是由于分子环境的改变或不同取代基的存在所致。要理解bathochromic shift的意义，首先必须了解光谱学的基本原理。当光与分子相互作用时，它可以使电子从较低能量状态跃迁到较高能量状态。被吸收的特定光波长对应于这些状态之间的能量差。如果一个分子经历了bathochromic shift，则意味着激发电子所需的能量降低，从而允许它在更长的波长下吸收光，通常是从紫外区移动到可见光谱。bathochromic shift的一个实际例子可以在染料和颜料的研究中看到。例如，当染料分子溶解在溶剂中时，染料与溶剂之间的相互作用可以导致bathochromic shift。这种效应可以归因于溶剂化过程，其中溶剂分子稳定染料的某些电子状态，有效地降低了电子跃迁所需的能量。因此，染料可能会表现出鲜艳的颜色变化，这不仅在视觉上引人注目，而且在化学传感器和指示剂等应用中也很有价值。此外，bathochromic shift并不限于溶液；它也可以在固态材料中发生。例如，当聚合物掺杂了色素时，周围的聚合物基体可以影响色素的电子特性，导致bathochromic shift。这一现象可以在先进光学材料的开发中得到利用，例如有机发光二极管（OLED）和光伏电池，在这些材料中，精确控制光的吸收和发射至关重要。总之，bathochromic shift是研究光-物质相互作用的基本概念，为各种物质的电子特性提供了深刻的见解。通过观察材料如何对环境变化作出反应，科学家可以深入了解分子行为，并利用这些知识进行实际应用。无论是在有机化学、材料科学还是光子学领域，bathochromic shift都是研究人员旨在操纵光和增强材料性能的强大工具。它的影响超越了理论研究，影响着依赖于精确光学特性的现实技术。理解这一概念对于任何希望深入探讨分子相互作用及其对材料特性影响的人来说都是必不可少的。