JASCO振动圆二色光谱仪VCD FVS-6000

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FVS-6000

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振动圆二色光谱仪 FVS-6000

▼概要
FVS-6000是最适合用于以手性分子构造解析为目的，测定红外区域振动圆偏光二色性的装置。可以获得糖类等在UV/VIS区域没有吸收化合物的光学活性信息以及分子绝对配置的决定的信息。

◆特征

▼长时间基线稳定性

(-)-pinene的IR和VCD光谱

▼热控制

独立的红外光源接口、PEM的恒温对应可以获得没有经时变化的基线。

▼最适合的光学系
采用特性少高効率的28度入射角干涉仪、集光効率高的光学系、排除双折射元件的反射光学系。

▼VCD自动校准
高精度控制光轴，通过控制伪影和经时变化使装置始终保持最佳状态。

▼DSP锁定检测
由最适合VCD的演算法的DSP锁定检测功能、实现了信噪比的大幅度改善。

▼高灵敏度测量

通过使用只透过VCD光谱测量目标吸收带的窄带滤光片（选项），可以测得现有方法测不到的微小波峰。

▼吹扫功能
光学系、样品室、检测器都可以进行吹扫、可不受大气的影响稳定测量。

◆VFT-4000

FT/IR-4000/6000系列的扩张组件、振动圆偏光二色性测定装置 VFT-4000。

型号	FVS-6000
测量波数范围	3200～850cm^-1
分辨率	0.5～16cm^-1
噪音水平	8×10^-6ΔAbs以下(分辨率4cm^-1、20分积算)
光源	高辉度陶瓷光源
检测器	MCT-V(3200～850cm^-1、标准)
干渉仪	28°入射角迈克尔逊干渉仪
光学滤光片	3200～2000、2000～850^{cm^-1}(6连自动切换、标准)
偏光子	KRS-5基板线栅

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It is generally understood that chiral compounds have different bioactivities depending upon the absolute configuration of each compound. Some familiar examples include glutamic acid and thalidomide. Lglutamic acid demonstrates the “Umami” taste*1, while D-glutamic acid has a bitter taste, similarly, the R form of thalidomide is a sedative, but the S form has teratogenic activity. Thus, the separation and study of chiral compounds is critical for many reasons. The functionalities of chiral compounds have been studied for the development of advanced molecules for many applications. The study of chiral compounds has spread to several fields such as natural products, pharmaceuticals and other functional molecules, and it can be pointed out that among those studies, the structural analysis of chiral compounds is a very important topic. X-ray Diffraction (XRD), Nuclear Magnetic Resonance (NMR) and Electronic Circular Dichroism (ECD) using UV/Vis light are employed as primary methods for the structural analysis of chiral compounds. In this paper, the measurement of chiral compounds by Vibrational Circular Dichroism (VCD) using infrared light will be outlined. VCD is a method to measure the difference of absorbance intensity between left-hand and right-hand circularly polarized light as shown in Figure 1. It is an advantage of VCD that this method can be applied to almost all organic compounds in the same way as infrared (IR) spectroscopy. In addition, by comparing the measurement results with calculated results by ab-initio molecular orbital calculations, the absolute configuration of the sample can be determined. However, since the peak intensity of VCD spectra are 1,000 – 10,000 times weaker than that of standard IR spectra, spectroscopic instruments with high sensitivity and stability with very small baseline fluctuations are required. The FVS-6000 VCD system has a high sensitivity detector, suitable optical
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It is generally understood that chiral compounds have different bioactivities depending upon the absolute configuration of each compound. Some familiar examples include glutamic acid and thalidomide. Lglutamic acid demonstrates the “Umami” taste*1, while D-glutamic acid has a bitter taste, similarly, the R form of thalidomide is a sedative, but the S form has teratogenic activity. Thus, the separation and study of chiral compounds is critical for many reasons. The functionalities of chiral compounds have been studied for the development of advanced molecules for many applications. The study of chiral compounds has spread to several fields such as natural products, pharmaceuticals and other functional molecules, and it can be pointed out that among those studies, the structural analysis of chiral compounds is a very important topic. X-ray Diffraction (XRD), Nuclear Magnetic Resonance (NMR) and Electronic Circular Dichroism (ECD) using UV/Vis light are employed as primary methods for the structural analysis of chiral compounds. In this paper, the measurement of chiral compounds by Vibrational Circular Dichroism (VCD) using infrared light will be outlined. VCD is a method to measure the difference of absorbance intensity between left-hand and right-hand circularly polarized light as shown in Figure 1. It is an advantage of VCD that this method can be applied to almost all organic compounds in the same way as infrared (IR) spectroscopy. In addition, by comparing the measurement results with calculated results by ab-initio molecular orbital calculations, the absolute configuration of the sample can be determined. However, since the peak intensity of VCD spectra are 1,000 – 10,000 times weaker than that of standard IR spectra, spectroscopic instruments with high sensitivity and stability with very small baseline fluctuations are required. The FVS-6000 VCD system has a high sensitivity detector, suitable optical
生物产业 2015-09-25

典型用户

用户单位	采购时间
中国科学技术大学	2020-09-04
北京大学	2019-09-03
上海大学	2013-05-16
浙江工业大学	2013-10-18

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