不均一構造を持つ単一微粒子のレーザー捕捉・顕微分光分析

抄録

Laser trapping-microspectroscopy and confocal laser fluorescence microspectroscopy have been applied to analyze inhomogeneous structures in single microparticles. In the case of melamine-resin microcapsules containing a toluene solution of a tetraphenylporphyrine derivative, the capsules showed an extraordinary diameter dependence of dye absorbance, and the results were explained in terms of the size-dependent distribution of the dye between the inner tolune and melamine resin phases. Single particle measurements were shown to be absolutely necessary to elucidate characteristic features of the chemistry of microparticles.