Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 63,
  • Issue 3,
  • pp. 344-353
  • (2009)

An Insight into Sequential Order in Two-Dimensional Correlation Spectroscopy

Not Accessible

Your library or personal account may give you access

Abstract

Determination of the sequential order of events is a very important feature of generalized two-dimensional correlation spectroscopy (2D-COS). Recently, queries have been put forward on the actual effectiveness of this method when changes are non-periodic, particularly in the presence of local sequential order. Consequently, it brings an urgent necessity to understand the true connotation of the sequential order parameter derived from 2D-COS analysis. This article presents an attempt to address these questions based on the analysis of simulated spectra by assuming the band intensity changes in a logarithmic, exponential, hyperbolic, or polynomial manner. It is concluded that for two events changing monotonically and without local sequential orders, one event occurring prior to the other as determined using 2D-COS means in most cases that the former has both a shorter half-time and a greater half-intensity. As a rule of thumb, intensity versus the perturbation factor should be plotted before performing the 2D-COS analysis to determine the sequential order of the involved events. In the presence of obvious local sequential order, 2D-COS analysis is unnecessary. Otherwise, sequential order can be determined quite reliably based on 2D-COS analysis.

PDF Article
More Like This
Fast two-dimensional fluorescence correlation spectroscopy technique for tea quality detection

Yongjiang Dong, Hao Lu, Zhengdong Yong, Chunsheng Yan, and Sailing He
Appl. Opt. 54(23) 7032-7036 (2015)

Correlated spatially resolved two-dimensional electronic and linear absorption spectroscopy

Megan A. Steves, Hongjun Zheng, and Kenneth L. Knappenberger
Opt. Lett. 44(8) 2117-2120 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved