研究目的
Investigating the aggregation states of cyanine dye molecules in organic-inorganic hybrid films using near-field and far-field fluorescence spectroscopy.
研究成果
The aggregation states of NK3175 molecules in the outermost surface within ca. 30 nm of certain hybrid films are different from those in the bulk, suggesting a more polar and/or rigid microenvironment at the surface. This provides new insights into the characterization of films in the depth direction.
研究不足
The study focuses on specific hybrid films and may not generalize to all organic-inorganic systems. The mechanism of photoinduced spectral change is not fully clarified.
1：Experimental Design and Method Selection:
Near-field fluorescence spectroscopy, far-field fluorescence, and Raman spectroscopy were used to study the aggregation states of NK3175 molecules in hybrid films.
2：Sample Selection and Data Sources:
Hybrid films consisted of NK3175 and a clay compound (SWN) were prepared by different methods.
3：List of Experimental Equipment and Materials:
NK3175 dye, SWN clay, distilled and deionized water, ethanol, fused silica plates.
4：Experimental Procedures and Operational Workflow:
Hybrid films were prepared by casting and drying methods. Near- and far-field PL and Raman spectra were measured using specific spectrometers.
5：Data Analysis Methods:
The position of PL maxima and Raman bands were analyzed to understand the aggregation states and microenvironment around NK3175 molecules.
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