DANIEL JOSÉ TOFFOLI
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Capítulo IPEN-doc 16767 Enhancement on the hypocrellin b singlet oxygen generation quantum yield in the presence of rare earth ions2008 - TOFFOLI, DANIEL J.; GOMES, LAERCIO; VIEIRA JUNIOR, NILSON D.; COURROL, LILIA C.Artigo IPEN-doc 14328 Effectiveness in total reduction of Candida albicans promoted by PDT with hypocrellin B: lanthanum2009 - TOFOLLI, DANIEL J.; PRATES, RENATO A.; RIBEIRO, MARTHA S.; VIEIRA JUNIOR, NILSON D.; HASHIMOTO, M.C.E.; COURROL, LILIA C.In this work we described the potentiality of the Hypocrellin B (HB) modified with the presence of lanthanum (La3+) ions, in eliminate Candida albicans in suspension. The results showed that the presence of lanthanum ions promotes a red shift of the HB absorption band and an enhancement in singlet oxygen quantum yield in 32%. Also in this work we obtained that the best molar ration between HB and La concentrations was 1:2. No photobleaching was observed in our experimental conditions. Antimicrobial activity was studied exciting C. albicans suspension with a 460 nm LED and a 660 nm laser both with 330 mW/cm2 irradiance. Best irradiation time, PS concentration and ROS production profile were determined showing that using 460 nm LED with 10 μM of PS, only 30 s of irradiation time was sufficient to reduce 100 % C. albicans colonies.Artigo IPEN-doc 14993 Estudo espectroscopico de complexos tetraciclina-lantanideos para aplicacoes biologicas2006 - TOFFOLI, DANIEL J.; SILVA, FLAVIA R. de O.; COURROL, LILIA C.; MANSANO, RONALDO D.; TARELHO, LUIS V.G.; GOMES, LAERCIO; VIEIRA JUNIOR, NILSON D.Artigo IPEN-doc 14992 Estudo das propriedades opticas do complexo hipocrelina-lantanideos2006 - TOFFOLI, DANIEL J.; COURROL, LILIA C.; TARELHO, LUIS V.G.; GOMES, LAERCIO; VIEIRA JUNIOR, NILSON D.Artigo IPEN-doc 14994 Estudo do complexo hipericina-europio para uso em diagnostico clinico2006 - TOFFOLI, DANIEL J.; COURROL, LILIA C.; TARELHO, LUIS V.G.; GOMES, LAERCIO; VIEIRA JUNIOR, NILSON D.Artigo IPEN-doc 13158 Photodynamic potentiality of hypocrellin B and its lanthanide complexes2008 - TOFFOLI, D.J.; GOMES, L.; VIEIRA JUNIOR, N.D.; COURROL, L.C.Artigo IPEN-doc 16399 Hypocrellin B, a perylenequinonoid pigment, and its complexes with lanthanide ions: optical characterization and enhancements in its photodynamic properties2009 - TOFOLLI, DANIEL J.; VIEIRA JUNIOR, NILSON D.; COURROL, LILIA C.