A Highly Stretchable and Autonomous Self‐Healing Polymer Based on Combination of Pt···Pt and π–π Interactions

Abstract

A new self‐healing polymer has been obtained by incorporating a cyclometalated platinum(II) complex Pt(C∧N∧N)Cl (C∧N∧N = 6‐phenyl‐2,2′‐bipyridyl) into a polydimethylsiloxane (PDMS) backbone. The molecular interactions (a combination of Pt···Pt and π–π interactions) between cyclometalated platinum(II) complexes are strong enough to crosslink the linear PDMS polymer chains into an elastic film. The as prepared polymer can be stretched to over 20 times of its original length. When damaged, the polymer can be healed at room temperature without any healants or external stimuli. Moreover, the self‐healing is insensitive to surface aging. This work represents the first example where the attractive metallophilic inter­actions are utilized to design self‐healing materials. Moreover, our results suggest that the stretchability and self‐healing properties can be obtained simultaneously without any conflict by optimizing the strength of crosslinking interactions. image

Document Details

Document Type
Pub Defense Publication
Publication Date
Aug 29, 2016
Source ID
10.1002/marc.201600428

Entities

People

  • Cheng‐hui Li
  • Jian‐cheng Lai
  • Jin‐feng Mei
  • Jun‐hua Wu
  • Xiao‐yong Jia
  • Xiao‐zeng You
  • Yang Sun
  • Yi Cao
  • Zhenan Bao

Organizations

  • Air Force Office of Scientific Research
  • Nanjing University
  • Stanford University

Tags

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Aerospace Engineering
  • Polymer Science and Engineering.
  • Polymer Science and Technology