Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/11421

Title: Quantification of colour stimuli through the calculation of CIE chromaticity coordinates and luminance data for application to in situ colorimetry studies of electrochromic materials
Authors: Mortimer, Roger J.
Varley, Thomas S.
Keywords: Colorimetry
CIE
Dyes
Electrochromism
Methyl viologen
n-Heptyl viologen
Issue Date: 2011
Publisher: © Elsevier B.V.
Citation: MORTIMER, R.J. and VARLEY, T.S., 2011. Quantification of colour stimuli through the calculation of CIE chromaticity coordinates and luminance data for application to in situ colorimetry studies of electrochromic materials. Displays, 32 (1), pp. 35 - 44.
Abstract: The development of a Microsoft® Excel® spreadsheet is described, for the accurate calculation of CIE (Commission Internationale de l’Eclairage) 1931 xy chromaticity coordinates and luminance data from visible region absorption spectra recorded in transmission mode. Using firmly established CIE principles, absorbance-wavelength data from visible spectra recorded using a Hewlett Packard 8452A diode array spectrophotometer are taken as input, with chromaticity coordinates being generated as output. The colorimetric transformations described are well known to colour scientists, with the methodology and background now being made accessible to the electrochromic materials community. Colour stimulus measurement example calculation results are firstly presented for aqueous solutions of the dyes, Erythrosin B (red), Acid Green 25 and Remaxol Brilliant Blue R, and then for tracking electrochromic in situ colour stimulus changes in the methyl viologen and n-heptyl viologen systems. The quantification of colour during each viologen dication to cation radical reduction process, and each reverse (oxidation) process, showed that subtle changes in both hue and luminance could be detected, with evidence of colour contributions from both the cation radical and the cation radical dimer.
Description: This article was published in the journal, Displays [© Elseview B.V.] and the definitive version is available at: http://dx.doi.org/10.1016/j.displa.2010.10.001
Version: Accepted for publication
DOI: 10.1016/j.displa.2010.10.001
URI: https://dspace.lboro.ac.uk/2134/11421
Publisher Link: http://dx.doi.org/10.1016/j.displa.2010.10.001
ISSN: 0141-9382
Appears in Collections:Published Articles (Chemistry)

Files associated with this item:

File Description SizeFormat
Displays 32 (2011) 35-44 pre-print.pdf977.11 kBAdobe PDFView/Open

 

SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.