期刊
CHEMPHYSCHEM
卷 11, 期 4, 页码 822-829出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200900676
关键词
laser chemistry; microcapsules; nanoparticles; release; thin films
资金
- Marie-Curie fellowship
- Max-Planck Society-Argentine SeCyt [PICT-2006-01365]
The interaction of biocompatible exponentially grown films composed of poly-L-lysine (PLL) and hyaluronic acid (HA) polymers with gold nanoparticles and microcapsules is studied. Both aggregated and non-aggregated nanoparticle states are achieved; desorption of PLL accounts for aggregation of nanoparticles. The presence of aggregates of gold nanoparticles on films enables remote activation by near-infrared irradiation due capsules, which are remarkedly monodisperse upon preparation but gain polydisperisty after months of storage, are also adsorbed onto films. PLL polymers desorbed from films interact with microcapsules introducing a charge imbalance which leads to an increase of the microcapsule size, thus films amplify this effect. Multifunctional, biocompatible, thick gel films with remote activation and release capabilities are targeted for cell cultures in biology and tissue engineering in medicine.
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