Jump to main content
Jump to site search


Monitoring cis-to-trans Isomerization of Azobenzene by Terahertz Time-Domain Spectroscopy

Abstract

We present terahertz time-domain spectroscopy (THz-TDS) to explore the conformational dynamics of thermally induced and photoinduced isomerization of azobenzene. The essence of the method is that isomerization of azobenzene proceeds with large structural changes of molecules while THz response is sensitive to these changes. We experimentally demonstrate that THz spectra of azobenzene behave remarkable variations upon heating and irradiation, and as such indeed quantitatively recorded and identified THz spectra can be used to monitor the isomerization process. Specifically, the measured THz spectra clearly reveal that the rate of thermal-isomerization of cis-to-trans in non-polar solvents is faster than that in polar solvents, and an about 6-fold acceleration of the rate could be achieved when Au NPs as catalyst were introduced into azobenzenes. Moreover, we provide evidence that the temperature and Au NPs as catalyst do not cause obvious influences on the photoinduced isomerization of azobenzene. The presented example illustrates the power of THz-TDS method to open up a novel avenue for exploring molecular dynamics.

Back to tab navigation

Publication details

The article was received on 19 Jul 2018, accepted on 09 Oct 2018 and first published on 09 Oct 2018


Article type: Paper
DOI: 10.1039/C8CP04570D
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
  •   Request permissions

    Monitoring cis-to-trans Isomerization of Azobenzene by Terahertz Time-Domain Spectroscopy

    L. Zhou, L. Chen, G. Ren, Z. Zhu, H. Zhao, H. Wang, W. Zhang and J. Han, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP04570D

Search articles by author

Spotlight

Advertisements