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Kinetics of Core‐Shell Nanoparticle Formation by Two‐Dimensional Nuclear Magnetic Resonance
Author(s) -
de Luzuriaga Alaitz Ruiz,
Pomposo José A.,
Grande Hans,
Etxeberria Agustin
Publication year - 2009
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800756
Subject(s) - heteronuclear single quantum coherence spectroscopy , heteronuclear molecule , kinetics , chemistry , nanoparticle , nuclear magnetic resonance spectroscopy , kinetic energy , two dimensional nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , crystallography , materials science , stereochemistry , nanotechnology , physics , quantum mechanics
We have studied the kinetics of polymeric nanoparticle formation for poly(styrene‐ block ‐4‐vinylpyridine) [P(S‐ b ‐4‐VPy)], chains in a non‐selective solvent using 1,4‐dibromobutane (DBB) as a cross‐linker by means of different nuclear magnetic resonance (NMR) spectroscopy techniques. The kinetic process was followed using 1 H, 13 C, and 2‐D Heteronuclear Single Quantum Correlation (HSQC) NMR experiments. The kinetic data obtained from 2‐D HSQC and 1 H NMR experiments were in good agreement between them, proving the reliability of the 2‐D HSQC NMR technique for the in situ study of the kinetics of core‐shell nanoparticle formation. A value of 1.5 × 10 −5 s −1 was determined for the apparent kinetic constant of the P(S‐ b ‐4‐VPy)‐DBB core‐shell nanoparticle formation process.