Issue 38, 2015

Broadband two dimensional infrared spectroscopy of cyclic amide 2-Pyrrolidinone

Abstract

In the past one-and-a-half decade there has been a significant methodological and technological development of two dimensional infrared (2DIR) spectroscopy, which unfolds many underlying physical and chemical processes of complex molecules, especially for biological molecules. Due to the extreme technical difficulties and non-uniform performance of ultrafast laser, so far, the method has been mostly applied to a small spectral region. A rather simple experimental methodology is presented here which is able to cover a broad spectral range from 1500 cm−1 to 3500 cm−1 to explore the molecular structure of cyclic amide, 2-Pyrrolidinone, via the time-resolved coupling of CO, CH and NH stretch vibrations. The signature of the coherent as well as incoherent coupling has been found. The amide-I band is incoherently coupled to CH and NH stretch vibrations and acts as an acceptor mode for vibrational energy relaxation from CH and NH stretch vibrations.

Graphical abstract: Broadband two dimensional infrared spectroscopy of cyclic amide 2-Pyrrolidinone

Article information

Article type
Paper
Submitted
21 Jul 2015
Accepted
01 Sep 2015
First published
01 Sep 2015

Phys. Chem. Chem. Phys., 2015,17, 24998-25003

Author version available

Broadband two dimensional infrared spectroscopy of cyclic amide 2-Pyrrolidinone

K. S. Maiti, Phys. Chem. Chem. Phys., 2015, 17, 24998 DOI: 10.1039/C5CP04272K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements