# Reorientational dynamics of amino acids in aqueous solution probed by ultrafast optical Kerr effect spectroscopy

https://mdr.nims.go.jp/datasets/f7eaf89c-9c54-4e53-9a2e-e1a1b65ce49b

## File

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## Id

f7eaf89c-9c54-4e53-9a2e-e1a1b65ce49b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-07T02:02:16.768238Z

## Updated at

2026-10-07T02:18:22.143305Z

## Published at

2026-10-07T03:28:02.966141Z

## Doi

https://doi.org/10.48505/nims.8646

## First published url

https://doi.org/10.1080/14686996.2026.2736324

## Date published

2026-09-21

## Recorded date published



## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Reorientational dynamics of amino acids in aqueous solution probed by ultrafast
    optical Kerr effect spectroscopy
  title_type: original
  lang: en

## Description

- description: Reorientational relaxation of a solute in aqueous solution reflects
    the friction from its surroundings, yet observing this rotational motion solute
    by solute at the microscopic level is difficult. Ultrafast optical Kerr effect
    (OKE) spectroscopy can follow molecular reorientational relaxation in liquid phase,
    but it is not obvious whether the slow picosecond component arises from the rotation
    of the solute itself or from water slowed by the increased viscosity when it is
    applied to aqueous solution systems. Here, we use OKE spectroscopy to investigate
    the reorientational dynamics of three amino acids (alanine, proline, and lysine
    monohydrochloride) in aqueous solution in terms of concentration, temperature,
    and chirality. Using poly(vinyl alcohol) (PVA) as a control, we found that increasing
    the macroscopic viscosity by approximately eightfold did not alter the reorientational
    relaxation time of water. This result indicates that OKE provides information
    on the local rotational friction associated with the solute and highlights its
    unique role as a technique complementary to rheometry, which measures macroscopic
    viscosity. This study provides new insight into the local rotational environment
    experienced by solutes in aqueous amino acid solutions.
  description_type: abstract
  lang: en

## Creator

- name: Koichi Murakami
  role: author
  organization: University of Tsukuba
  department: a Institute of Pure and Applied Sciences
- name: Tomohiro Nobeyama
  role: author
- name: Yuta Koda
  role: author
- name: Takahiro Sasamori
  role: author
- name: Kentaro Shiraki
  role: author
- name: Yohei Yamamoto
  role: author
- name: Soh Kushida
  role: author

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: Amino acids
  schema: not_defined
- subject: optical kerr effect spectroscopy
  schema: not_defined
- subject: reorientational dynamics
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '27'
  article_number: '2736324'

## Conference



## Related item



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## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: c6d28214-0ef6-4b6a-9634-27ee39cfa7e2
  filename: STAM-2026-0083_data.zip
  content_type: application/zip
  size: 40966
  md5: 95bc20bea9523279a64c324701761c2f
- id: a817153d-5ea9-41ef-8dab-7894ba31249c
  filename: Reorientational dynamics of amino acids in aqueous solution probed by
    ultrafast optical kerr effect spectroscopy.pdf
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  size: 3075805
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- id: a24bbbf2-f3f1-4d3c-812e-b398ccfa384b
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## Thumbnail

fileset_id: a817153d-5ea9-41ef-8dab-7894ba31249c
filename: Reorientational dynamics of amino acids in aqueous solution probed by ultrafast
  optical kerr effect spectroscopy.pdf