Phototriggered Depolymerization of Flexible Poly(phthalaldehyde) Substrates by Integrated Organic Light-Emitting Diodes,ACS Applied Materials & Interfaces

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Phototriggered Depolymerization of Flexible Poly(phthalaldehyde) Substrates by Integrated Organic Light-Emitting Diodes
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-07-24 00:00:00 , DOI: 10.1021/acsami.8b08181
Kyung Min Lee ₁ , Oluwadamilola Phillips ₂ , Anthony Engler ₂ , Paul A. Kohl ₂ , Barry P. Rand _{1,

3}

Affiliation

We demonstrate phototriggered depolymerization of a low ceiling temperature (T_c) polymer, poly(phthalaldehyde) (PPHA), via internal light emission from integrated organic light-emitting diodes (OLEDs) fabricated directly on flexible PPHA substrates with silver nanowire electrodes. The depolymerization of the PPHA substrates is triggered by absorption of the OLED emission by a sensitizer that activates a photoacid generator via energetically favorable electron transfer. We confirm with Fourier-transform infrared spectroscopy that the photon doses delivered by the integrated OLED are sufficient to depolymerize the PPHA substrates. We determine this critical dosage by measuring the operating lifetimes of the OLEDs whose failure is believed to be due to significant mechanical softening during the liquefaction of decomposed phthalaldehyde monomers.

中文翻译：

集成有机发光二极管对柔性聚苯二醛衬底进行光触发解聚

我们证明了低上限温度（T _c聚合物（聚苯二醛）（PPHA），通过集成有机发光二极管（OLED）的内部发光直接在带有银纳米线电极的柔性PPHA基板上制造而成。PPHA基材的解聚是由增敏剂吸收OLED发射引发的，该增敏剂通过能量上有利的电子转移激活光酸产生剂。我们用傅立叶变换红外光谱法确认，由集成OLED传输的光子剂量足以解聚PPHA基板。我们通过测量OLED的使用寿命来确定这一关键剂量，该OLED的失效被认为是由于分解的苯二甲醛单体液化过程中的显着机械软化所致。

更新日期：2018-07-24

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