分析化学英文课件13红外光谱学IR AnalyticalChemistry分析化学 Chapter13InfraredSpectroscopy §13.1Principles§13.2InfraredSpectrometer§13.3InfraredSpectroscopyand molecularStructure§13.4DeducingtheSpectrum Ultraviolet Infrared •Moleculespectrum •Moleculespectrum •Transitionofenergylevel•Transitionofenergystate ...
infraredabsorptionspectroscopy,IR principleofIR 红外辐射是1800年被发现的,但由于红外线的检测比较困难,因此直到20世纪初,才较系统地研究了几百种有机和无机化合物的红外吸收光谱,并发现了某些吸收带与分子基团之间存在着相互关系。此时,红外光谱在化学上的价值开始逐渐被人们所重视。到20世纪30年代,化学家们开始考虑把...
The method or technique of infrared spectroscopy is conducted with an instrument called an infrared spectrometer (orspectrophotometer) to produce an infrared spectrum. Image Source:BYJUS. Principle of Infrared (IR) Spectroscopy Infrared Spectroscopy is the analysis of infrared light interacting with a mol...
基本原理（基本原理（principle)2.1.ConditionsofInfraredabsorptionspectroscopy 条件一：辐射光具有的能量与发生振动跃迁时所需的能量相等；条件一：辐射光具有的能量与发生振动跃迁时所需的能量相等；P218-219 以双原子分子振动光谱为例，由量子力学可以证明，以双原子分子振动光谱为例，由量子力学可以证明，分子的振动...
Chapter9InfraredSpectroscopyandRamanSpectroscopy9.1IntroductiontoIR9.2PrincipleofIR9.3RelationshipofIRwithmolecularstructure9.4Influencefactorforgroupfrequency9.6Application9.5instrument§1IntroductionInfraredabsorptionspectroscopy,IR,alsoasvibrational-rotationalspectroscopy.Ifasampleisilluminatedbyinfraredlightwithcontinuousfrequencies,...
Rheo-optical fourier transform IR spectroscopy of polyurethane elastomers - 1. Principle of the method and measurements at ambient temperatureRheo-optical FTIR spectroscopy has emerged as an extremely valuable tool to study deformation phenomena in polymeric solids. With the aid of a specially designed...
Our simple decoupling method has captured the main operation principle of the device. However, some detailed questions still remain for discussion. For example, the heated chromium pad can generate a temperature gradient in graphene from Cr side to Au side, which contributes to a response that is...
Chapter 2 FTIR (Fourier transform infrared spectroscopy) 教学目的和要求 通过学习了解红外吸收光谱与分子结构的关系, 能解析红外光谱图。应当掌握: 1、红外光谱产生的条件及吸收峰的位置、峰数、 峰强取决于哪些因素。 2、掌握主要有机物的红外光谱特征、吸收频率与 基团的关系,以及影响吸收频率的一些因素, 能够确...
The most common principle by which optical O22 transducers operate is based on the dynamic quenching process, namely attenuation of the intensity and/or lifetime of their luminescence as a function of the energy transfer from their excited state to a quenching agent (such as oxygen in the groun...
In principle, most approaches using mid-infrared rely on the strong absorption of water in living tissue. Diffuse reflectance spectroscopy can access glucose molecules from the epidermal layer, whereas photothermal detectors can provide information from depths of 20–100 μm [6]. A number of ...