Multi-crosslinkable self-healing polysilsesquioxanes for the smart recovery of anti-scratch properties

Young Yeol Jo, Albert S. Lee, Kyung Youl Baek, Heon Lee, Seung Sang Hwang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A series of multi-crosslinkable, self-healing, ladder-structured polysilsesquioxane inorganic-organic hybrid materials were developed to enhance the mechanical properties through tandem UV-curing and Diels-Alder chemistry. The introduction of UV-curable acryl- or epoxy groups allowed for a higher degree of crosslink density while bringing the inorganic backbones closer together for highly efficient self-healing properties, all with a singular material as the ternary organic functional groups consisting of UV-curable function, diene, and dienophile were tethered to the well-defined inorganic backbone. Exceptional thermal stability (>400 °C), optical transparency (>95%), solution processability, as well as robust surface mechanical properties in both bulk (pencil hardness 6H) and nanoscale (elastic modulus > 9 GPa), properties which can be adroitly recovered through mild and rapid thermal treatment hold great promise for next generation hybrid smart coating materials for application in optoelectronic devices.

Original languageEnglish
Pages (from-to)78-87
Number of pages10
Publication statusPublished - 2017 Aug 25

Bibliographical note

Funding Information:
This work was supported by the Technology Innovation Industrial funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) [10050814, Development of low Dk/low Df PCB materals for a high speed above 1GHz]. Partial funding was given by the Materials Architecturing Research Center of Korea Institute of Science and Technology (KIST) and the Korea Research Fellowship Program funded by the Ministry of Science, ICT, and Future Planning through the National Research Foundation of Korea.

Publisher Copyright:
© 2017 Elsevier Ltd


  • Anti-scratch
  • Polysilsesquioxane
  • Self-healing

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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