这关键区别化学发光和电化学发光之间是化学发光是化学反应过程中辐射或光的发射,而电化学发光是一种化学发光,这是由于溶液中发生的电化学反应而发生的。
发光是从激发态触及能量基础时通过分子或原子自发发射的。这不是加热的结果。当它可能发生励磁源从光,化学反应或生物催化反应中吸收能量。基于此,发光可以是photoluminescence, chemiluminescence or bioluminescence. Chemiluminescence is the emission of electromagnetic radiation such as ultraviolet, visible, or infrared during the chemical reaction. Electroluminescence is a kind of chemiluminescence. It occurs due to an electrochemical reaction happening in a solution.
CONTENTS
1。概述和关键差异
2。What is Chemiluminescence
3。什么是电化学发光
4。化学发光和电化学发光之间的相似性
5.并排比较 - 化学发光与表格形式的电化学发光
6.Summary
What is Chemiluminescence?
化学发光是化学反应过程中光的发射。由于化学反应,其中一种反应产物进入激发态,并通过发射辐射(例如紫外线,可见或红外线)返回能量状态。化学发光的标准示例之一是腔测试。在此测试中,由于与铁中的铁接触,血液通过发光表示。
通常,化学反应必须是放热的,以形成电子激发态。在水系统中,化学发光主要由氧化还原反应发生。化学发光有许多应用。在法医研究中,化学发光可用于解决犯罪。在确定空气中的少量杂质或毒药时,分析溶液中的无机物种和有机物种,检测和测定生物分子Elisa和Western印迹, sequencing DNA using pyrosequencing, lighting objects, lighting children toys, etc. chemiluminescence is applied.
什么是电化学发光?
电化学发光是电化学反应过程中发光的发射。这是一种化学发光。换句话说,电致发光是由电化学刺激诱导的化学发光。这些发光信号是由于电化学通过电化学反应转化为放射性能的。激发态产物是由于电化学反应而产生的。
Electrochemiluminescence process does not require expensive instrumentation. There is also a smaller likelihood of interference in this process. Moreover, electrochemiluminescence is confined to the surface of the electrode or its close vicinity. Despite these advantages, frequent fouling of the electrodes is one of the major disadvantages of this process.
Generally, electroluminescence occurs especially when metal chelates undergo a series of chemical reactions at an electrode surface. There are several applications of electrochemiluminescence. During DNA hybridization, electrochemiluminescent labels are specially used since they are highly sensitive, simple and versatile.
化学发光和电化学发光之间有什么相似之处?
- 电致发光是一种化学发光。
- 在这两种情况下,都会自发发射光。
- 这re are different applications of electroluminescence and chemiluminescence.
- Both chemiluminescence and electroluminescence take place due to oxidation and reduction reactions.
化学发光和电化学发光之间有什么区别?
化学发光是由于化学反应而导致光的发射。同时,电化学发光是由于在电极表面发生的电化学反应引起的光的发射。因此,化学发光和电化学发光之间的关键差异在于化学发光是化学反应的结果。但是,电化学发光是电化学刺激的结果。此外,电化学发光发生在电极表面,而化学发光却没有。
下图显示了化学发光和电化学发光之间差异的详细比较。
Summary – Chemiluminescence vs Electrochemiluminescence
化学发光是化学反应过程中光的发射。Electrochemiluminescence is a kind of luminescence produced by electrode reactions. It is also known as electrogenerated chemiluminescence. So, this is the key difference between chemiluminescence and electrochemiluminescence. Both phenomena take place due to the excited products falling into ground energy state from their excited state. Moreover, they have many applications in different fields.
参考:
1. Fereja,Tadesse Haile等。“最近关于化学发光反应,原理和药物分析的应用的综述”。ISRN光谱学,2013年,2013年,第1-12页。Hindawi Limited,DOI:10.1155/2013/230858。
2.“电化学发光 - 概述|ScienceDirect主题”。ScienceDirect.com,2020年,在这里可用。
图片提供:
1。“Chemiluminescence” By Tavo Romann – Own work(CC BY-SA 4.0)通过下议院维基梅迪亚
2。“Heterogeneous ECL mechanism” By G.Valenti – Own work(CC BY-SA 4.0)通过下议院维基梅迪亚
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