NDLI: Cyclic peptides-assisted transport of metal ions across liquid-organic membrane

Content Provider	Springer Nature Link
Author	Mu, Linjing Huang, Hai He, Jiaqi Zhang, Ning Cheng, Jinpei
Copyright Year	2001
Abstract	The formation of alkali and alkaline-earth metal picrate complexes with cyclo(Pro-Gly)$_{n}$ ionophores (1,n = 3; 2,n = 4) can facilitate the migration of metal ions across a bulk liquid CH$_{2}$Cl$_{2}$ membrane. The migration behavior was studied by measuring the solution absorption at 356 nm, using a UV/Vis spectrophotometer, and the rates can be determined by comparing the initial absorption of donor solutions with the absorption of the corresponding receiver solutions as the function of time. It was found that cyclic peptide 1 shows higher transport activity for the studied alkali and alkaline-earth metal ions than compound 2, which is related to the backbone flexibility of the cyclic peptides. The findings in this work suggest that the rate of ionophore-facilitated ion transport depends not only on the ability of complex formation in aqueous phase, but also on the ability of complex dissociation in organic phase.
Starting Page	219
Ending Page	221
Page Count	3
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	46
Issue Number	3
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2001-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	cyclic peptide ionophore transport rate metal ion Science Life Sciences Physics Chemistry/Food Science Earth Sciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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