Near-field scanning optical microscopy of zinc-porphyrin crystals.
نویسندگان
چکیده
Using a near-field scanning optical microscope (NSOM), crystals of zinc-porphyrin network materials are characterized with respect to morphology and fluorescence. Needle-shaped crystals are observed. While the topography is flat, the fluorescence intensity profile in the width direction is approximately triangular. A numerical calculation shows that differences between the topographic and optical images cannot be due to an artifact. In some needle-shaped crystals, the fluorescence emission is strongly peaked at one or both ends, possibly indicating a polar crystal structure.
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ورودعنوان ژورنال:
- Ultramicroscopy
دوره 84 3-4 شماره
صفحات -
تاریخ انتشار 2000