pH-controlled inclusion and release of oxyanions by dendrimers bearing methyl orange moieties.
We report the synthesis of POPAM dendrimers, bearing up to 64 chromophores at their periphery. For these dendrimers, a radiotracer technique was used to study the liquid-liquid partition of pertechnetate and (14)C-labeled nucleotides in trichloromethane-aqueous systems. Inclusion and release of guest molecules can be controlled by changing the pH. The extraction efficacy increases with rising generation number.
Stephan
H
H
Institut für Bioanorganische und Radiopharmazeutische Chemie, Forschungszentrum Rossendorf, 01314 Dresden, Germany.
Spies
H
H
Johannsen
B
B
Kauffmann
C
C
Vögtle
F
F
D001391:Azo Compounds / Q000737:chemistry* / Q000378:metabolism*; D002725:Chloroform / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D009711:Nucleotides / Q000378:metabolism; D011073:Polyamines / Q000737:chemistry* / Q000378:metabolism*; D013670:Sodium Pertechnetate Tc 99m / Q000737:chemistry* / Q000378:metabolism*; D012997:Solvents
D001391:Azo Compounds; D009711:Nucleotides; D011073:Polyamines; D012997:Solvents; C100258:methyl orange; D002725:Chloroform; D013670:Sodium Pertechnetate Tc 99m