Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 360, Issue 1, Pages 204-210Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.04.017
Keywords
Dendrimers; Vapor sorption; Guest exchange; QCM sensor; Thermogravimetry; Differential scanning calorimetry; FTIR microspectroscopy
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Funding
- RFBR [11-03-01215]
- BRHE [REC007]
- Federal Program Research and scientific-pedagogical personnel of Innovative Russia [P2345]
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Specific combination of guest sorption properties was observed for phosphorus-containing dendrimers, which distinguish them from ordinary polymers and clathrate-forming hosts. The sorption capacity for 30 volatile guests, binding reversibility, guest desorption kinetics and guest exchange, glass transition behavior and ability to be plasticized with guest were studied for phosphorus dendrimers of different generations (G(1)-G(4) and G(9)) using quartz crystal microbalance sensor, FTIR microspectroscopy, atomic force microscopy, simultaneous thermogravimetry and differential scanning calorimetry combined with mass-spectrometry of evolved vapors. The dendrimers were found to have a different selectivity for different homological series of guests, high glass transition points without plasticization with guest even at high temperatures and saturation levels, moderate guest-binding irreversibility and ability both for effective guest exchange and independent guest sorption. These properties constitute an advantage of the studied dendrimers as receptor materials in various applications. (C) 2011 Elsevier Inc. All rights reserved.
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