Journal
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Volume 11, Issue 8, Pages 1285-1292Publisher
SPRINGERNATURE
DOI: 10.1039/c2pp25014d
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Funding
- FP7 PEOPLE-ITN project [237962-CYCLON]
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The association of doxorubicin (DOX) and artemisinin (ART) to a beta-CyD-epichlorohydrin crosslinked polymer (p beta-CyD), organized in nanoparticles of ca. 15 nm size, was investigated in neutral aqueous medium by circular dichroism (CD), UV-vis absorption and fluorescence. The stability constants and the absolute CD spectra of the drug complexes were determined by global analysis of multiwavelength data from spectroscopic titrations. The polymer p beta-CyD proved able to disrupt the DOX dimer when the latter is the predominant form of DOX in solution. The spectroscopic and photophysical properties of the complexes evidenced an alcohol-like environment for ART and an improved inherent emission ability for DOX in the nanoparticle frame.
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