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231223s2007 xx ||||| 00| ||eng c |
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|a pubmed25n0572.xml
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|a (DE-627)NLM171459830
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|a (NLM)17629316
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Naka, Kensuke
|e verfasserin
|4 aut
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|a Water-soluble anionic POSS-core dendrimer
|b synthesis and copper(II) complexes in aqueous solution
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 17.09.2007
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|a Date Revised 08.08.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A carboxylic acid-terminated polyhedral oligosilsesquioxane (POSS)-core dendrimer (POSS-CO2H) was synthesized from octa(3-ammoniumpropyl)octasilsesquioxane octachloride (POSS-NH3+) via a t-butyl ester-terminated POSS-core dendrimer that was prepared from neutralized POSS-NH3+ and t-butyl acrylate. Complexing properties of the sodium salts of POSS-CO2H (POSS-CO2Na) with Cu2+ were studied in comparison with those of the G1.5 poly(amidoamine) (PAMAM) dendrimer (G1.5-CO2Na) by spectroscopic approach and isothermal titration calorimetry. In the case of G1.5-CO2Na, Cu2+-N4 and Cu2+-N2O2 complexes are possible coordination modes, and only a Cu2+-N2O2 complex can be formed for POSS-CO2Na. In the case of POSS-CO2Na, upon increasing the concentration of Cu2+, the values of the binding constants decreased. However, the values of binding constants in the regions of the Cu2+-N2O2 coordination mode for G1.5-CO2Na increased with increasing concentration of Cu2+. This observation suggests that the uptake of Cu2+ is inhibited by increasing binding numbers of Cu2+ due to the rigid structure of the POSS-core dendrimer
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|a Journal Article
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| 700 |
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|a Fujita, Masaki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tanaka, Kazuo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chujo, Yoshiki
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1991
|g 23(2007), 17 vom: 14. Aug., Seite 9057-63
|w (DE-627)NLM098181009
|x 0743-7463
|7 nnns
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| 773 |
1 |
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|g volume:23
|g year:2007
|g number:17
|g day:14
|g month:08
|g pages:9057-63
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| 912 |
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|a GBV_ILN_721
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|a AR
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| 952 |
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|d 23
|j 2007
|e 17
|b 14
|c 08
|h 9057-63
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