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Synthesis of Photosensitive Bottlebrush Block Copolymers for Tunable Photonic Pigments via Light‐Driven Engineering of Chain Conformation
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2025-04-17 , DOI: 10.1002/marc.202500179
Xingzhou Li 1 , Mohan Zheng 1 , Jin Li 2 , Rida Fatima 1 , Bingyuan Xia 1 , Yuesheng Li 1 , Dong-Po Song 1
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2025-04-17 , DOI: 10.1002/marc.202500179
Xingzhou Li 1 , Mohan Zheng 1 , Jin Li 2 , Rida Fatima 1 , Bingyuan Xia 1 , Yuesheng Li 1 , Dong-Po Song 1
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Structurally colored bottlebrush block copolymers (BBCPs) offer a safer and more environmentally friendly alternative to traditional toxic pigments. For practical applications, precise control of their photonic bandgap is essential to generate various colors. A novel amphiphilic BBCPs designed with photosensitive o ‐nitrobenzyl ester (NE) groups strategically positioned near the main chain of the hydrophilic block is presented. Under UV radiation, these NE groups convert to acid groups, enhancing the hydrophilicity of the hydrophilic block. This leads to increased hydration and chain extension when assembled at the water‐in‐oil (W/O) interface of a water‐in‐oil‐in‐water (W/O/W) emulsion system. The light‐driven engineering of BBCP conformation enables significant control over interfacial curvature, resulting in varied internal droplet diameters and domain spacing in the final photonic pigment particles after solvent removal. Despite the inherent rigidity of BBCPs, approach achieves photonic bandgap tuning across the entire visible spectrum using only three different BBCPs. These structural colored pigments show promise for applications in sensing systems, cosmetics, and inks.
中文翻译:
通过光驱动链构象工程合成用于可调光子颜料的光敏 Bottlebrush Block 共聚物
结构着色的 bottlebrush 嵌段共聚物 (BBCP) 为传统的有毒颜料提供了一种更安全、更环保的替代品。对于实际应用,精确控制其光子带隙对于产生各种颜色至关重要。提出了一种新型的两亲性 BBCPs,其光敏性邻硝基苄酯 (NE) 基团战略性地位于亲水嵌段的主链附近。在紫外线辐射下,这些 NE 基团转化为酸基团,增强了亲水嵌段的亲水性。当组装在水-油-水-水 (W/O/W) 乳液体系的油包水 (W/O) 界面时,这会导致水合作用和链条延伸增加。BBCP 构象的光驱动工程能够显着控制界面曲率,从而在溶剂去除后最终光子颜料颗粒中产生不同的内部液滴直径和畴间距。尽管 BBCP 具有固有的刚性,但该方法仅使用三种不同的 BBCP 即可在整个可见光谱上实现光子带隙调谐。这些结构性彩色颜料在传感系统、化妆品和油墨中的应用前景广阔。
更新日期:2025-04-17
中文翻译:

通过光驱动链构象工程合成用于可调光子颜料的光敏 Bottlebrush Block 共聚物
结构着色的 bottlebrush 嵌段共聚物 (BBCP) 为传统的有毒颜料提供了一种更安全、更环保的替代品。对于实际应用,精确控制其光子带隙对于产生各种颜色至关重要。提出了一种新型的两亲性 BBCPs,其光敏性邻硝基苄酯 (NE) 基团战略性地位于亲水嵌段的主链附近。在紫外线辐射下,这些 NE 基团转化为酸基团,增强了亲水嵌段的亲水性。当组装在水-油-水-水 (W/O/W) 乳液体系的油包水 (W/O) 界面时,这会导致水合作用和链条延伸增加。BBCP 构象的光驱动工程能够显着控制界面曲率,从而在溶剂去除后最终光子颜料颗粒中产生不同的内部液滴直径和畴间距。尽管 BBCP 具有固有的刚性,但该方法仅使用三种不同的 BBCP 即可在整个可见光谱上实现光子带隙调谐。这些结构性彩色颜料在传感系统、化妆品和油墨中的应用前景广阔。