TY - JOUR
T1 - Autonomous Damage Detection in Multilayered Coatings via Integrated Aggregation-Induced Emission Luminogens
AU - Lu, Xiaocun
AU - Li, Wenle
AU - Sottos, Nancy R.
AU - Moore, Jeffrey S.
N1 - Funding Information:
The authors acknowledge the funding and technical support from BP through the BP International Centre for Advanced Materials (BP-ICAM) which made this research possible. Graphic support from Dorothy Loudermilk at the Department of Chemistry in University of Illinois Urbana−Champaign is greatly appreciated.
Publisher Copyright:
© Copyright 2018 American Chemical Society.
PY - 2018/11/28
Y1 - 2018/11/28
N2 - Detection and assessment of small-scale damage at early stages are essential for polymeric materials to extend lifetime, avoid catastrophic structural failure, and improve cost-efficiency. Previous self-reporting coatings provide visual indication of surface damage but have been limited to a single layer without information on the depth of crack penetration. Here, we present a novel strategy for autonomous indication of damage in multilayered polymeric materials using aggregation-induced emission luminogens (AIEgens). Three different AIEgens are encapsulated and layered into polymeric coatings. When scratches of varying depths penetrate the coating layers, different combinations of AIEgens are activated to visually detect the depth of damage based on the corresponding fluorescent colors. The AIEgen-based detection mechanism makes this system a powerful tool for damage indication in a variety of polymeric coatings.
AB - Detection and assessment of small-scale damage at early stages are essential for polymeric materials to extend lifetime, avoid catastrophic structural failure, and improve cost-efficiency. Previous self-reporting coatings provide visual indication of surface damage but have been limited to a single layer without information on the depth of crack penetration. Here, we present a novel strategy for autonomous indication of damage in multilayered polymeric materials using aggregation-induced emission luminogens (AIEgens). Three different AIEgens are encapsulated and layered into polymeric coatings. When scratches of varying depths penetrate the coating layers, different combinations of AIEgens are activated to visually detect the depth of damage based on the corresponding fluorescent colors. The AIEgen-based detection mechanism makes this system a powerful tool for damage indication in a variety of polymeric coatings.
KW - aggregation-induced emission
KW - autonomous damage detection
KW - microcapsule-based composites
KW - microscale crack depths
KW - multilayered polymeric coatings
KW - visual detection
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U2 - 10.1021/acsami.8b16454
DO - 10.1021/acsami.8b16454
M3 - Article
C2 - 30430834
AN - SCOPUS:85057223101
SN - 1944-8244
VL - 10
SP - 40361
EP - 40365
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 47
ER -