通过四步法合成了一种含双羟基结构的螺吡喃分子,其溶液具备良好的光致变色性能,可作为智能变色染料使用。以聚乳酸(PLA)为基体材料,通过将其浸染在合成得到的螺吡喃溶液中使PLA成功染色,并具备优异的紫外光-可见光响应的可逆变色能力。利用3D打印技术将PLA材料打印成不同形状的样品,通过染色后发现上述样品也具备优异光致可逆变色能力,同时具备良好的耐疲劳性能。该类螺吡喃智能染料有望应用于4D打印、智能服装与光学防伪标签等领域。
A spiropyran molecule containing a dihydroxy structure was synthesized by a four-step method,and its solution exhibited excellent photochromism,making it suitable for use as an intelligent photochromic dye.Polylactic acid (PLA) was selected as the polymer matrix,and was successfully stained by the synthesized spiropyran solution,resulting in excellent reversible color-changing capability in response to visible light/ultraviolet light.3D printing was used to print PLA into samples with different shapes,and the prepared PLA samples also exhibited excellent photochromism and good fatigue resistance after dyeing.The synthesized spiropyran intelligent dye is expected to be applied in fields such as 4D printing,smart textiles,and optical anti-counterfeiting labels.
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基金资助
国家自然科学基金(52003201);广东省自然科学基金面上项目(2023A1515010694)
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