photochromism

简明释义

英[ˌfəʊtəʊˈkrəʊmɪzəm]美[foʊtəˈkroʊmɪzm]

n. 对光反应变色

英英释义

单词用法

同义词

反义词

例句

1.The studies on the thin films containing polyoxometalates have drawn more and more attention owing to their potential applications in luminescence, photochromism, magnetism, electrics and catalysis.

多金属氧酸盐膜材料在发光、光致变色、磁性、电性以及催化领域中有着广阔的发展前景，是多酸化学和材料化学领域的研究热点。

2.The studies on the thin films containing polyoxometalates have drawn more and more attention owing to their potential applications in luminescence, photochromism, magnetism, electrics and catalysis.

多金属氧酸盐膜材料在发光、光致变色、磁性、电性以及催化领域中有着广阔的发展前景，是多酸化学和材料化学领域的研究热点。

3.They can be applied to molecular optical switches of high storage density, high switching rate, and high write erase cycle times based on their photochromism.

基于这种光致变色性能，这类物质可用作存贮密度高、响应速度快及擦-写次数高的信息存储材料。

4.The photochromism were signed by UV-Vis spectrum. Meanwhile the influences for the structures of phenoxyanthraquinones to the photochromism were discussed.

通过紫外- 可见光谱表征了其光致变色性，并讨论了结构对光致变色性的影响。

5.This chapter simply introduces the application of pyrrole and pyrrole 'derivatives in medicine, pesticide, biology, polymer material and photochromism.

本章简单介绍了吡咯类衍生物在医药，农药，生物，高分子以及功能性材料方面的应用。

6.The photochromism and the application of photochromic material in military field as optical information storage materials and camouflage material etc.

介绍了光致变色现象，综述了光致变色材料在军事领域作为光信息存储材料、军用伪装材料等方面的潜在应用价值。

7.The recent advances of photochromism in optical storage field are summarized with the examples of organic and biological materials.

本文以几种有机材料和一种生物材料为例，综述了目前光致变色材料在光信息存储领域的进展。

8.Multilevel laser power modulation is a key technology in multilevel optical data storage systems based on photochromism.

多阶激光功率调制是光致变色多阶光数据存储的一项核心技术。

9.The glasses use photochromism to darken in sunlight, providing better eye protection.

这些眼镜利用光致变色在阳光下变暗，以提供更好的眼睛保护。

10.Scientists are studying the photochromism of certain materials for use in smart windows.

科学家们正在研究某些材料的光致变色特性，以用于智能窗户。

11.The photochromism effect allows the fabric to change color when exposed to UV light.

这种光致变色效果使得面料在紫外线照射下改变颜色。

12.Many outdoor sports enthusiasts prefer sunglasses with photochromism for varying light conditions.

许多户外运动爱好者喜欢使用具有光致变色功能的太阳镜，以应对不同的光照条件。

13.The innovative design incorporates photochromism to enhance aesthetic appeal and functionality.

这种创新设计结合了光致变色，以增强美学吸引力和功能性。

作文

Photochromism is a fascinating phenomenon that occurs in certain materials, where the color of the material changes in response to light exposure. This unique property is not only intriguing from a scientific perspective but also has numerous practical applications in various fields. The term photochromism refers specifically to the reversible transformation of a substance between two forms, one of which is colored and the other is colorless, when exposed to ultraviolet (UV) light or other forms of radiation. This process is often observed in photochromic glasses, which darken when exposed to sunlight and return to their original state when the light source is removed. The mechanism behind photochromism involves the absorption of photons by specific molecules within the material. When these molecules absorb light energy, they undergo a structural change that alters their electronic configuration, leading to a new color being perceived. This change can be reversed when the energy source is removed, allowing the material to return to its initial state. The ability of certain compounds to exhibit photochromism makes them particularly useful in the design of smart materials and devices. One of the most common applications of photochromism is found in eyewear. Photochromic lenses are designed to adjust their tint based on the intensity of UV light. When a person steps outside into bright sunlight, the lenses darken, providing protection against harmful UV rays. Once the individual returns indoors or moves into a shaded area, the lenses gradually lighten back to their original clear state. This convenience not only enhances visual comfort but also protects the eyes from potential damage caused by excessive sun exposure. In addition to eyewear, photochromism has promising applications in the field of coatings and paints. For instance, certain coatings can change color in response to environmental conditions, such as temperature or light intensity. This feature can be utilized in outdoor signage, allowing signs to become more visible during the day and less obtrusive at night. Furthermore, photochromism can be applied in the automotive industry, where car windows treated with photochromic materials can automatically adjust their tint based on sunlight exposure, enhancing passenger comfort while reducing glare. The study of photochromism also extends to the realm of molecular biology and biochemistry. Researchers are exploring the use of photochromic compounds in drug delivery systems, where the release of medication can be controlled by light exposure. By incorporating photochromism into drug formulations, it may be possible to develop targeted therapies that activate only when needed, minimizing side effects and improving treatment efficacy. Despite its many advantages, photochromism is not without challenges. The durability of photochromic materials can vary, and over time, repeated exposure to light can lead to degradation of the compounds, resulting in diminished effectiveness. Therefore, ongoing research is focused on enhancing the stability and longevity of these materials to ensure their continued usefulness in practical applications. In conclusion, photochromism is a remarkable phenomenon with a wide array of applications across different industries. From eyewear to coatings and even medical technologies, the ability of materials to change color in response to light presents exciting possibilities for innovation. As researchers continue to explore the potential of photochromism, we can expect to see even more advancements that harness this unique property to improve our daily lives.

光变色效应是一种迷人的现象，发生在某些材料中，当材料暴露在光照下时，其颜色会发生变化。这种独特的特性不仅从科学的角度来看引人入胜，而且在各个领域都有许多实际应用。术语光变色效应特指在紫外线（UV）光或其他形式的辐射照射下，物质在两种形式之间可逆转变，其中一种是有色的，另一种是无色的。这个过程通常在光变色眼镜中观察到，这些眼镜在阳光照射下变暗，而在光源移除后返回到其原始状态。 光变色效应背后的机制涉及特定分子对光子的吸收。当这些分子吸收光能时，它们经历结构变化，改变其电子构型，从而导致新颜色的感知。当能量源被移除时，这种变化可以逆转，使材料恢复到其初始状态。某些化合物表现出光变色效应的能力使它们在智能材料和设备的设计中特别有用。 光变色效应最常见的应用之一是在眼镜中。光变色镜片旨在根据紫外线光的强度调整其色调。当一个人走到明亮的阳光下时，镜片变暗，提供对有害紫外线的保护。一旦个人返回室内或移动到阴影区域，镜片逐渐恢复到其原始的清晰状态。这种便利不仅增强了视觉舒适感，还保护眼睛免受过度阳光照射可能造成的伤害。 除了眼镜，光变色效应在涂料和油漆领域也有前景。例如，某些涂层可以根据环境条件（如温度或光强度）改变颜色。此特性可用于户外标识，使标识在白天更显眼，而在夜间则不那么突兀。此外，光变色效应还可以应用于汽车工业，经过光变色处理的车窗可以根据阳光照射自动调整其色调，提高乘客的舒适度，同时减少眩光。 对光变色效应的研究还扩展到分子生物学和生物化学的领域。研究人员正在探索在药物递送系统中使用光变色化合物，其中药物的释放可以通过光照控制。通过将光变色效应纳入药物配方，有可能开发仅在需要时激活的靶向疗法，从而最小化副作用并提高治疗效果。 尽管有许多优点，光变色效应并非没有挑战。光变色材料的耐用性可能有所不同，经过多次光照后，化合物的降解可能导致有效性降低。因此，持续的研究集中在增强这些材料的稳定性和耐久性，以确保它们在实际应用中的持续有效性。 总之，光变色效应是一种具有广泛应用的显著现象，涵盖了不同的行业。从眼镜到涂料甚至医疗技术，材料在光照下改变颜色的能力为创新提供了激动人心的可能性。随着研究人员继续探索光变色效应的潜力，我们可以期待看到更多利用这一独特特性的进步，以改善我们的日常生活。