TY - JOUR
T1 - Multicolor Mechanochromism of a Polymer/Silica Composite with Dual Distinct Mechanophores
AU - Kosuge, Takahiro
AU - Zhu, Xiaolei
AU - Lau, Vivian M.
AU - Aoki, Daisuke
AU - Martinez, Todd J.
AU - Moore, Jeffrey S.
AU - Otsuka, Hideyuki
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/2/6
Y1 - 2019/2/6
N2 - The development of a multicolor mechanochromic polymer/silica composite is achieved by using two distinct types of mechanochromophores. The multicolor mechanochromism of the composite containing diarylbibenzofuranone in silica-rich domains and naphthopyran in the polymer-rich domain is observed. The obtained composite shows blue, green, and orange colors according to the intensity of applied mechanical stimuli, solvent addition, and lapse of time. This unique multicolor mechanochromic behavior is evaluated by solid-state UV-vis absorption spectroscopy, ab initio steered molecular dynamics simulations, and computed minimum energy paths on force-modified potential energy surfaces. The unique mechanochromism is attributed to the difference in properties, activated colors, and domain locations between the two mechanochromophores.
AB - The development of a multicolor mechanochromic polymer/silica composite is achieved by using two distinct types of mechanochromophores. The multicolor mechanochromism of the composite containing diarylbibenzofuranone in silica-rich domains and naphthopyran in the polymer-rich domain is observed. The obtained composite shows blue, green, and orange colors according to the intensity of applied mechanical stimuli, solvent addition, and lapse of time. This unique multicolor mechanochromic behavior is evaluated by solid-state UV-vis absorption spectroscopy, ab initio steered molecular dynamics simulations, and computed minimum energy paths on force-modified potential energy surfaces. The unique mechanochromism is attributed to the difference in properties, activated colors, and domain locations between the two mechanochromophores.
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U2 - 10.1021/jacs.8b13310
DO - 10.1021/jacs.8b13310
M3 - Article
C2 - 30676738
AN - SCOPUS:85061115343
SN - 0002-7863
VL - 141
SP - 1898
EP - 1902
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 5
ER -