Triphenyl methane dyes as sensor materials for solvent detection with surface‐acoustic‐wave devices
1990; Volume: 2; Issue: 9 Linguagem: Inglês
10.1002/adma.19900020907
ISSN1521-4095
AutoresFranz L. Dickert, Gerhard Bertlein, G. Mages, W.-E. Bulst,
Tópico(s)Scientific Measurement and Uncertainty Evaluation
ResumoHighly‐colored phthalide carbenium ions (see figure) embedded in a matrix of phenols can form the basis of solventsensing devices able to detect a variety of solvents in concentrations down to a few ppm. Solvent absorption disturbs hydrogen bonding producing a less favorable environment for the cations, the changing concentration of which can be monitored using optical absorption, or SAW‐devices. magnified image
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