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Gold nanoring-enhanced generation of singlet oxygen: an intricate correlation with surface plasmon resonance and polyelectrolyte bilayers
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SYSNO ASEP 0469024 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Gold nanoring-enhanced generation of singlet oxygen: an intricate correlation with surface plasmon resonance and polyelectrolyte bilayers Author(s) Hu, Y. (US)
Kaňka, Jiří (URE-Y)
Liu, K. (US)
Yang, Y. (US)
Wang, H. (US)
Du, H. (US)Number of authors 6 Source Title RSC Advances. - : Royal Society of Chemistry
Roč. 6, č. 106 (2016), s. 104819-104826Number of pages 8 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords Singlet oxygen ; Fluorescence ; Gold nanorings Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GBP205/12/G118 GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 UT WOS 000388111900112 EID SCOPUS 84994429431 DOI 10.1039/c6ra22814c Annotation We report the dependence of gold nanoring (Au NR)-enhanced singlet oxygen (O-1(2)) generation on localized surface plasmon resonance (LSPR) wavelength and separation distance between Au NR and photosensitizers. Using Au NR of tunable LSPR and poly(styrene sulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) bilayers via layer-by-layer (LbL) assembly on Au NR as molecular spacers, we found that O-1(2) generation from Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) conjugated on the Au NR can be optimized through proper combination of LSPR and the separation distance. More importantly, O-1(2) enhancement follows a different correlation with the separation distance compared to that of AlPcS4 fluorescence enhancement. Our experimental findings are consistent with the prediction by boundary element method (BEM) calculations. Our study paves the way to the design of LSPR-enhanced O-1(2) generation for improved efficacy of photodynamic therapy of cancers Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2017
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