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Low-Temperature-Curable and Photo-Patternable Benzocyclobutene-Derived Aggregation-Induced Emission (AIE)-Active Polymer Dielectrics
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  • Ziwei Yuan,
  • Meng Xie,
  • Jianlei Qian,
  • Wenjie Fan,
  • Menglu Li,
  • Liao Guo,
  • Yan Sun,
  • Wenxin Fu
Ziwei Yuan
Institute of Chemistry Chinese Academy of Sciences
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Meng Xie
Institute of Chemistry Chinese Academy of Sciences
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Jianlei Qian
Henan University
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Wenjie Fan
Institute of Chemistry Chinese Academy of Sciences
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Menglu Li
Institute of Chemistry Chinese Academy of Sciences
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Liao Guo
Henan University
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Yan Sun
Henan University
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Wenxin Fu
Institute of Chemistry Chinese Academy of Sciences

Corresponding Author:fuwenxin@iccas.ac.cn

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Abstract

The high curing temperatures required for traditional benzocyclobutene (BCB) materials have posed limitations on their applicability in high-temperature-sensitive fields. To address this challenge, our work focuses on the synthesis of a novel tetraphenylethylene (TPE)-functionalized BCB monomer, TPE-BCB, achieved through the introduction of an ether bond onto the BCB’s four-membered ring via Williamson reaction. TPE-BCB demonstrates remarkable low-temperature curing properties, characterized by a ring-opening peak temperature of 190 °C, representing a 25% reduction compared to conventional BCBs. Fully cured TPE-BCB resins exhibit exceptional dielectric and mechanical properties, coupled with minimal water absorption. Additionally, the incorporation of TPE with aggregation-induced emission (AIE) characteristics enhances the resins’ luminescence and photolithographic capabilities. Notably, our TPE-BCB resins achieve impressive photolithography performance with a resolution ratio of up to 10 µm. In contrast to conventional BCB-functionalized resins, TPE-BCB offers the dual advantage of low-temperature curing and luminescence. This development marks a significant step in the advancement of low-temperature curing BCB materials and serves as a pioneering example in the realm of multi-layer wafer bonding materials.
06 Nov 2023Submitted to Aggregate
07 Nov 2023Submission Checks Completed
07 Nov 2023Assigned to Editor
08 Nov 2023Reviewer(s) Assigned
21 Nov 2023Review(s) Completed, Editorial Evaluation Pending