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Interaction of Carboxyl Groups with Rare Metal Ions on the Surface of Detonation Nanodiamonds
Author(s) -
Yudina Elena B.,
Aleksenskii Alexander E.,
Fomina Irina G.,
Shvidchenko Alexander V.,
Danilovich Dmitry P.,
Eremenko Igor L.,
Vul Alexander Ya.
Publication year - 2019
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/ejic.201900607
Subject(s) - chemistry , carboxylate , metal , inorganic chemistry , metal ions in aqueous solution , aqueous solution , ion , nanodiamond , polymer chemistry , stereochemistry , organic chemistry , diamond
This paper reports on the grafting of rare‐earth metal ions onto particles of 4–5 nm carboxylated detonation nanodiamond (DND‐COOH). Aqueous solutions of acetates and nitrates (Ln(OOCCH 3 ) 3 · 4H 2 O or Ln(NO 3 ) 3 · 6H 2 O, Ln = Eu, Gd) were used for the grafting. The ion exchange reaction between rare metal ions and protons of surface carboxyl groups was first detected by conductometry and electrokinetic potential measurements. The equivalence point corresponds to the bond between Ln 3+ and the three carboxylate anions of DND‐COOH. Thus, we have demonstrated an easy synthetic approach for obtaining nanodiamond particles DND‐COOH with surface grafted with a controlled amount of any rare‐earth metal ions (DND‐COO‐ {Ln}, Ln = Ce, Pr, Sm, Eu, Gd, Dy, Ho, Tm). The resulting hybrid material DND‐COO‐{Eu} exhibits photoluminescence properties arising from f‐f transitions of Eu 3+ ion.