Methoxy-substituted derivatives of 1,4-bis(2-phenylethenyl)benzene and of 1,4-bis(2-phenylethyl)benzene as ligands in ion-selective electrodes for lead ions

Autor:	Krzysztof Aleksandrzak, Hanna Radecka, Jerzy Radecki, H.J. Geise, Iwona Szymańska, P. Dieltiens, Katarzyna Ocicka
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Chemistry Potassium Potentiometric titration Inorganic chemistry Salt (chemistry) chemistry.chemical_element Bioengineering Protonation Medicinal chemistry Ion Biomaterials chemistry.chemical_compound Membrane Mechanics of Materials Selectivity Benzene
Zdroj:	Materials science and engineering: part C: biomimetic materials, sensors and systems
ISSN:	0928-4931
Popis:	We report the potentiometric responses towards lead ions of liquid membrane electrodes containing 1,4-bis[2-(3,4,5-trimethoxyphenyl)ethenyl]benzene ( 1 ),2,5-dimethoxy-1,4-bis[2-(3,4,5-trimethoxyphenyl)ethenyl]benzene ( 2 ),1,4-bis[2-(3,4,5-trimethoxyphenyl)ethyl]benzene ( 3 ) and 2,5-dimethoxy-1,4-bis[2-(3,4,5-trimethoxyphenyl)ethyl]benzene ( 4 ). All ligands strongly respond to lead ions in the activity range 10 −6 –10 −3 M and three show high selectivity against common interfering mono- and doubly charged cations. The new ligands demonstrate low affinity for protonation. Addition of 1 mol% of potassium tetrakis( p -chlorophenyl)borate as a lipophilic anionic salt significantly increases the selectivity of ligands 2 , 3 and 4 . The ligands show potential as sensory elements of liquid membrane electrodes destined for determination of lead ions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8d611cca6b0fd4f1ee25c97728e401a https://doi.org/10.1016/s0928-4931(01)00348-4 Zobrazit plný text záznamu Full Text from ScienceDirect