A digital imaging method for evaluating the kinetics of vapochromic response

TALANTA

卷:209

Article

Abdolmaleki, Mahmood Karimi^1,3  Riasi, M. Sadegh²  Enayati, Mojtaba¹  Norton, Arnie E.³  Chatterjee, Sayandev⁴  Yeghiazarian, Lilit²  Connick, William B.³  Abbaspourrad, Alireza¹ 

[1] Cornell Univ, Dept Food Sci, 243 Stocking Hall, Ithaca, NY 14853 USA

[2] Univ Cincinnati, Dept Chem & Environm Engn, Cincinnati, OH 45221 USA

[3] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA

[4] Pacific Northwest Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA

关键词: Vapochromic materials;    Color change;    Platinum(II) complexes;    CIELAB color space;   

DOI  :  10.1016/j.talanta.2019.120520

来源: Elsevier

【 摘 要 】

This work describes the novel use of a cell phone camera and the L*a*b method (color space defined by the International Commission on Illumination) to characterize the color change in different vapochromic platinum (II) complexes in order to get quantitative and more reliable data. In this study, we have developed a semiautomatic CCA software that digitally analyzes images (e.g., video frames) collected while a vapochromic material is absorbing vapor and changing its color. The advantages of using this method, compared to reflectance or transmission spectroscopy through a thin film, include its low cost, convenience, portability, ease of sample preparation, the lack of need for specialized equipment, and the possibility of simultaneously collecting data on different samples under identical conditions. The results show that this strategy is effective in producing quantitative information about the kinetics of processes.

【 授权许可】

Free