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Exciton migration in self-assembled dendrite-type fractal superstructures of mo...
Bernardo, César; Belsley, M.; Coutinho, Paulo J. G.; Schellenberg, Peter; Moura, Isabel; Núñez Fernández, Yuriel; Stauber, Tobias; Vasilevskiy, MikhailWe investigated dendrite shaped superstructures made of two different QDs, namely CdSe/ZnS and CdTe. Due to the dense packing of QDs, Förster resonance energy transfer (FRET) may compete with deexcitation, and the specific dendrite shaped structure suggests the possibility of funneling of excitation from the edges of the structure to the center.
Production and photoactivity spectrum of Ni/TiO2 core shell nanoparticles
Coutinho, Paulo J. G.; Peixoto, Bruno; Kabir, R.; Schellenberg, PeterIn this work, Ni nanoparticles were obtained by laser ablation of a Nickel target with femtosecond pulses from a Ti-Sapphire laser in an aqueous media. Subsequently, these nanoparticles were isolated and covered with TiO2.
Self-assembled dextrin nanogel as curcumin delivery system
Gonçalves, Catarina; Schellenberg, Peter; Gama, F. M.; Coutinho, Paulo J. G.; Pereira, PaulaCurcumin is a natural polyphenol with anti-oxidative, anti-inflammatory and anti-cancer properties. Its therapeutic potential is substantially hindered by the rather low water solubility and bioavailability, hence the need for suitable carriers. In this study, we show that self-assembled nanogels obtained from hydrophobically modified dextrin are effec-tive curcumin nanocarriers. The stability and loading effic...
Design, synthesis and characterization of the electrochemical, nonlinear optica...
Raposo, M. Manuela M.; Castro, M. Cidália R.; Fonseca, A. Maurício C.; Schellenberg, Peter; Belsley, M.Two series of related donor-acceptor conjugated heterocyclic azo dyes based on the thienylpyrrole system, functionalized with benzothiazol-2-yl (5-6) or benzothiazol-6-yl acceptor groups (7) through an N=N bridge, have been synthesized by azo coupling using 1-alkyl(aryl)thienylpyrroles (1) and benzothiazolyl diazonium salts (2-4) as coupling components. Their optical (linear and first hyperpolarizability), elec...
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