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Mechano‐Responsive Dyes: Observation of Interfacial Damage in a Silk‐Epoxy Composite, Using a Simple Mechanoresponsive Fluorescent Probe (Adv. Mater. Interfaces 10/2017)
Author(s) -
Woodcock Jeremiah W.,
Beams Ryan,
Davis Chelsea S.,
Chen Ning,
Stranick Stephan J.,
Shah Darshil U.,
Vollrath Fritz,
Gilman Jeffrey W.
Publication year - 2017
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201770046
Subject(s) - materials science , silk , epoxy , composite number , fluorescence , composite material , fiber , stress (linguistics) , matrix (chemical analysis) , optics , linguistics , philosophy , physics
Jeffrey W. Gilman and co‐workers observe interfacial damage in a silk‐epoxy‐composite in article number 1601018 . Hundreds of microns inside a silk‐fiber composite, two‐photon fluorescence life‐time imaging and hyperspectral imaging of a damage‐sensing probe (mechanophore), reveals interface debonding, fiber fracture, and chemical reaction with the matrix. Functional groups on the periphery of the fluorescent probe chemically link the fiber and matrix. Stress transfer across the probe's strained spirolactam center activate the probe's fluorescent properties.