研究目的
To gain further knowledge on the solid-state photochromism of spirooxazine (SO) and to achieve the generation of a microrelief on an SO crystalline film through the spatially patterned generation of the colored merocyanine (MC) isomer.
研究成果
A crystalline spherulite thin film of spirooxazine exhibited photochromism upon UV light irradiation at room temperature, allowing for the reversible construction of microreliefs through patterned irradiation and heating. This provides new insights into the microfabrication potential of photochromic crystals.
研究不足
The study is limited by the specific conditions required for spherulite formation and the need for precise temperature control. The photochromic reaction's efficiency and the microrelief's durability under repeated cycles were not extensively explored.
1：Experimental Design and Method Selection:
The study involved the observation of photochromism in a crystalline spherulite spirooxazine film upon UV light irradiation and the construction of microreliefs through patterned UV light irradiation and heating.
2：Sample Selection and Data Sources:
An amorphous SO film was crystallized to form spherulites, which were then used for photochromism and microrelief construction experiments.
3：List of Experimental Equipment and Materials:
Polarized optical microscopy (POM), powder X-ray diffraction (PXRD), atomic force microscope (AFM), and UV light sources were used.
4：Experimental Procedures and Operational Workflow:
The SO film was irradiated with UV light through photomasks to induce photochromism and microrelief formation. The film was then heated to its melting point to erase the relief and recrystallized to form spherulites again.
5：Data Analysis Methods:
UV–visible absorption spectra were measured to observe photochromism, and AFM was used to analyze the microrelief structures.
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