Organic conjugated polymers with low energy bandgaps are emerging as a particular class of near‐infrared (NIR) photothermal conversion materials. However, these polymers routinely possess high phase transition temperatures due to the rigid skeleton and strong intermolecular interactions. Conjugated polymers can rarely be thermally processed at low temperature, especially below 100 °C. This work formulates a concept of post‐darkening modeling production (p‐DMP) by which the thermoplastic non‐conjugated trans‐polyisoprene (TPI) is refreshed into a photothermal conversion material with high light use efficiency. Two steps, including the customizable shaping at low temperature and iodine vapor‐tailored “darkening”, ensure the ease of preparing photothermal conversion devices with desirable topologies. A few characterizations, with the combination of density functional theory (DFT) calculations, provide reasonable explanations for understanding the “darkening” process of TPI in iodine atmosphere. In particular, the p‐DMP is successfully extended to three‐dimension (3D) printing, opening an avenue to fabricate personalized photothermal products, for example, a sunlight‐directed physiotherapy device for healthcare of articular tissues.

中文翻译：

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通过后期加黑建模生产来刷新橡胶作为定制的光热转换材料

具有低能带隙的有机共轭聚合物正在作为一类特殊的近红外（NIR）光热转换材料出现。然而，由于刚性骨架和强烈的分子间相互作用，这些聚合物通常具有较高的相变温度。共轭聚合物很少能在低温下进行热处理，尤其是在低于100°C的温度下。这项工作提出了变暗后建模生产（p -DMP）的概念，通过该概念，热塑性非共轭反式‐聚异戊二烯（TPI）被刷新为具有高光利用效率的光热转换材料。分两个步骤进行，包括可定制的低温成型和碘蒸气定型的“变暗”，可确保轻松制备具有所需拓扑的光热转换装置。结合密度泛函理论（DFT）计算的一些表征，为理解碘在大气中TPI的“变暗”过程提供了合理的解释。特别是，p- DMP已成功扩展到三维（3D）打印，为制造个性化的光热产品开辟了道路，例如，用于关节组织保健的日光定向理疗设备。