Aiming at a highly bright emitter, hybridized thin films consisting of organic dye TDBC J-aggregates (JA) and titanium oxide (TO) nanoparticles (NPs) have been fabricated successfully. The fluorescence intensity and the corresponding fluorescence quantum yield multiplied ca. 10 times and ca. twice, respectively. TO NPs have a high refractive index, and have no absorption loss like metal NPs. On the other hand, extinction (absorption) and fluorescence spectra are in general overlapped in organic dye JA, that is, so a small Stokes’ shift. Namely, the present phenomenon could be qualitatively explained by the simultaneously optical processes of both “excitation enhancement” induced directly by near-field effect from TO NPs and “emission enhancement” as a radiation of scattering field from TO NPs, which were polarized by the excitation energy from TDBC JA to TO NPs. In other words, the definite scattering peak in the extinction spectrum of TO NPs should be tuned efficiently with extinction (absorption) and fluorescence peak bands of TDBC JA.

中文翻译：

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由有机染料 J 聚集体和氧化钛纳米粒子组成的杂化薄膜的荧光特性

针对高亮度发射器，由有机染料 TDBC J-聚集体 (JA) 和氧化钛 (TO) 纳米粒子 (NPs) 组成的杂化薄膜已成功制造。荧光强度和相应的荧光量子产率成倍增加。10 次，大约 分别两次。TO NPs 具有高折射率，并且没有像金属 NPs 那样的吸收损耗。另一方面，在有机染料 JA 中，消光（吸收）和荧光光谱通常是重叠的，也就是说，斯托克斯位移很小。即，目前的现象可以通过同时由 TO NPs 的近场效应直接诱导的“激发增强”和作为 TO NPs 散射场辐射的“发射增强”的同时光学过程来定性地解释，它们被从 TDBC JA 到 TO NPs 的激发能量极化。换句话说，TO NPs 消光光谱中确定的散射峰应该通过 TDBC JA 的消光（吸收）和荧光峰带进行有效调整。