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arXiv 1502.02565physics.chem-phquant-ph
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氢键中的量子限制

Quantum Confinement in Hydrogen Bond

Carlos da Silva dos Santos, Elso Drigo Filho, Regina Maria Ricotta

摘要:

在这项工作中,量子限制效应被提出作为涉及氢键的分子基团的振动光谱的位移的原因。在这种方法中,氢键对氢施加了空间势垒并限制了其振荡运动。通过Morse势研究了大分子中NH和OH分子团在受限(形成氢键时)和非受限(不存在氢键时)情况下的振动跃迁。能量是通过变分法与超对称量子力学(SQM)的形式获得的试探波函数。结果表明,可以区分与氢键存在有关的发射峰。这些分析结果与红外光谱的实验结果进行了比较,结果令人满意。

英文摘要:

In this work, the quantum confinement effect is proposed as the cause of the displacement of the vibrational spectrum of molecular groups that involve hydrogen bonds. In this approach the hydrogen bond imposes a space barrier to hydrogen and constrains its oscillatory motion. We studied the vibrational transitions through the Morse potential, for the NH and OH molecular groups inside macromolecules in situation of confinement (when hydrogen bonding is formed) and non-confinement (when there is no hydrogen bonding). The energies were obtained through the variational method with the trial wave functions obtained from Supersymmetric Quantum Mechanics (SQM) formalism. The results indicate that it is possible to distinguish the emission peaks related to the existence of the hydrogen bonds. These analytical results were satisfactorily compared with experimental results obtained from infrared spectroscopy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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