Analysis of organic luminescent dye aggregation forms embedded in cyclodextrins via random lasing

Here we show the new method for the solid state dye aggregates formation studies based on laser light generation. For our studies we have selected homologous series of cyclodextrins (alpha, beta and gamma), hosting Rhodamine 6G fluorescent dye, which is known from the different type of aggregates formation. The spectral analysis of excited dye forms has allowed us to investigate emission properties of complex system as well as stability. Proposed methodology allows to distinguish the dye aggregated forms by lasing emission properties (shift) in the spontaneously formed optical resonators.