Peak separation and sorting by coherent 2D resonance Raman spectroscopy.

Peak separation and sorting by coherent 2D resonance Raman spectroscopy.
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通过相干二维共振拉曼光谱进行峰分离和分类。

DOI:
10.1021/ac0504215
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发表时间:
2005
影响因子:
7.4
通讯作者:
Joyner,CandaceC
Joyner,CandaceC
中科院分区:
化学1区
文献类型:
--
作者:
Chen,PeterC;Joyner,CandaceC

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探索使用一种新的相干二维形式的共振拉曼光谱的分离和排序峰的能力。这种实验技术根据振动序列、转动量子数和选择定则,将通常拥挤的转动-振动峰沿着一系列曲线分布。每条谱线都由转动-振动峰组成,这些峰具有相同的振动序列和相同的ΔJ值,并按转动量子数的顺序分布。对于双原子分子,这些线起源于它们最初在二维空间中以相反或正交方向行进的点,这有助于促进线之间的分离。对火焰中C2的模拟和实验结果证实了分离和排序这些通常拥挤的旋转振动峰的能力。这种方法似乎提供了一个解决方案,在气相电子光谱的光谱拥挤和混乱的长期存在的问题。
The ability to separate and sort peaks is explored using a new coherent two-dimensional form of resonance Raman spectroscopy. This experimental technique distributes normally congested rotational−vibrational peaks along a series of curved lines according to vibrational sequence, rotational quantum number, and selection rule. Each line consists of rotational−vibrational peaks that have the same vibrational sequence and the same value for ΔJ, distributed in order by rotational quantum number. For diatomic molecules, these lines originate from points where they initially travel in opposite or orthogonal directions in two-dimensional space, which helps facilitate the separation between lines. Simulations and experimental results on C2in a flame confirm the ability to separate and sort these normally congested rotational−vibrational peaks. This method appears to provide a solution to the long-standing problems of spectral congestion and disorder in gas-phase electronic spectra.
血红蛋白中配体连接的亚基组装的能量学需要第三个变构结构。
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