Light‐Mediated Formation of Reactive Surface Chemical Patterns Using Thermally Crosslinkable Photosensitive Copolymers,Bulletin of the Korean Chemical Society

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Light‐Mediated Formation of Reactive Surface Chemical Patterns Using Thermally Crosslinkable Photosensitive Copolymers
Bulletin of the Korean Chemical Society ( IF 2.3 ) Pub Date : 2020-06-09 , DOI: 10.1002/bkcs.12046
Dong Jin Lee ₁ , Sol An ₁ , Jieun Nam ₁ , Ganghee Park ₁ , Sangwon Kim ₂ , Myungwoong Kim ₁

Affiliation

We demonstrate the photoinduced formation of a surface reactive functionality on thermally crosslinked thin films of random copolymers consisting of glycidyl methacrylate (GMA), o‐nitrobenzyl derivative (NBOCMA), and styrene monomers, namely poly(S‐r‐GMA‐r‐NBOCMA). The photolabile o‐nitrobenzyl moiety in the thin films released primary amine group upon UV light illumination. The amount of the light energy imparted to the thin film was varied to control the concentration of the generated amine, thus modulating effective surface chemical composition. This change in the composition shifted the surface wettability toward being more hydrophilic. Utilizing the reactivity of released primary amine, the arrays of green fluorophore were fabricated on micrometer‐scale patterns, well‐defined by the typical photolithographic technique. Our studies highlight the potential of the photodeprotection chemistry as a simple but effective route to control the placement of a specific functionality in thin films, which can be further extended to achieve surface active materials with highly complex functionalities.

中文翻译：

使用可热交联的光敏共聚物在光介作用下形成反应性表面化学图案

我们证明的在由甲基丙烯酸缩水甘油酯（GMA）的无规共聚物的热交联的薄膜的表面反应性官能光致形成，ö硝基苄衍生物（NBOCMA），和苯乙烯类单体，即聚（S- [R -GMA- ř -NBOCMA ）。光不稳定性o薄膜中的-硝基苄基部分在紫外线照射下释放出伯胺基。改变施加给薄膜的光能的量以控制所产生的胺的浓度，从而调节有效的表面化学组成。组成的这种变化使表面润湿性转向更亲水。利用释放的伯胺的反应性，绿色荧光团的阵列被制成了微米级的图案，通过典型的光刻技术可以很好地定义。我们的研究强调了光脱保护化学的潜力，因为它是控制特定功能在薄膜中的位置的简单但有效的途径，可以进一步扩展以实现具有高度复杂功能的表面活性材料。

更新日期：2020-06-09

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