Premium
Synthesis and Host−Guest Properties of Multi‐Crown Dendrimers towards Sodium Pertechnetate and Mercury(II) Chloride
Author(s) -
Stephan Holger,
Spies Hartmut,
Johannsen Bernd,
Gloe Karsten,
Gorka Marius,
Vögtle Fritz
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200111)2001:11<2957::aid-ejic2957>3.0.co;2-y
Subject(s) - dendrimer , chemistry , mercury (programming language) , chloride , sodium , molecule , inorganic chemistry , polymer chemistry , nuclear chemistry , organic chemistry , computer science , programming language
Multi‐crown dendrimers of four different generations have been synthesized by grafting 4, 8, 16, and 32 benzo[15]crown‐5 units at the periphery of POPAM dendrimers. The binding of sodium pertechnetate and mercury(II) chloride by the multi‐crown dendrimers has been studied by liquid‐liquid extraction using the radioactive probes 22 Na + , 99 TcO 4 − , and 203 Hg 2+ . The third‐ and fourth‐generation dendrimers 3 and 4 , in particular, are capable of extracting mercury(II) with high efficiency (ca. 12 Hg II ions per dendrimer molecule, even at low generation). It has been shown that the guest molecules investigated are preferentially encapsulated inside the dendrimers.