Chemistry / Kimya
Permanent URI for this collectionhttps://hdl.handle.net/11147/4072
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Other Erratum: Optical Transition Rates of a Meso-Substituted Thiacarbocyanine in Methanol-In Reverse Micelles (journal of Luminescence (2005) 113 (1-8)(Elsevier Ltd., 2005) Özçelik, Serdar; Atay, N. ZeynepThe correct correspondence information for the first author is: Serdar Özçelik Chemistry Department, Izmir Institute of Technology, Urla-35430 Izmir, Turkey E-mail address: serdarozcelik@iyte.edu.tr Tel.: +90 232 750 7557 fax: +90 232 750 7509Article Citation - WoS: 8Optical Transition Rates of a Meso-Substituted Thiacarbocyanine in Methanol-In Reverse Micelles(Elsevier Ltd., 2005) Özçelik, Serdar; Atay, N. ZeynepWe report the photophysical properties of 3,3′-diethyl-5,5′-dichloro-9-phenylthiacarbocyanine (DDPT) in methanol-in-oil (m/o) reverse micellar systems which form methanol droplets stabilized with anionic surfactant aerosol-OT (AOT) in n-heptane. The fluorescence quantum yield of DDPT is enhanced by a factor of 17 in the methanol droplet in comparison with bulk methanol. The fluorescence lifetimes of DDPT in m/o reverse micelles are prolonged up to 2.2 ns with increasing molar ratio of methanol to surfactant (w0=[MeOH]/[AOT]), whereas the fluorescence lifetime of DDPT in bulk methanol is 75 ps. The non-radiative rate constants of DDPT in the droplets are decreased by a factor of 40, resulting in a remarkable enhancement in quantum yields, indicating that internal motions of DDPT in the droplets are significantly reduced due to strong electrostatic interactions between the positively charged DDPT and the negatively charged sulfonate head-groups of AOT and the spatial confinement induced by the reverse micellar structure.