TY - JOUR
T1 - Ultrafast Proton Transfer in Polymer Blends Triggered by Shock Waves
AU - Ren, Yi
AU - Banishev, Alexandr A.
AU - Suslick, Kenneth S.
AU - Moore, Jeffrey S.
AU - Dlott, Dana D.
N1 - The research described in this study was based on work supported by the Office of Naval Research under MURI grant N00014-16-1-2272.
PY - 2017/3/22
Y1 - 2017/3/22
N2 - We describe ultrafast proton transfer in the ground electronic state triggered by the use of shock waves created by high-speed impacts. The emission of Nile Red (NR), a polarity sensing dye, was used to probe the effects of shock compression in a series of polymers, including polymer Brønsted bases blended with organic acid proton donors. NR undergoes a shock-induced red-shift due to an increase both in density and in polymer polarity. In blends with poly(4-vinylpyridine) (PVP) and phenol, NR showed an excess shock-induced red-shift with a distinct time dependence not present in controls that are incapable of proton transfer. The excess red-shift first appeared with 0.8 km·s-1 impacts. Occurring in ca. 10 ns, this NR red-shift was caused by the formation of an ion pair created by shock-triggered proton transfer from phenol to PVP.
AB - We describe ultrafast proton transfer in the ground electronic state triggered by the use of shock waves created by high-speed impacts. The emission of Nile Red (NR), a polarity sensing dye, was used to probe the effects of shock compression in a series of polymers, including polymer Brønsted bases blended with organic acid proton donors. NR undergoes a shock-induced red-shift due to an increase both in density and in polymer polarity. In blends with poly(4-vinylpyridine) (PVP) and phenol, NR showed an excess shock-induced red-shift with a distinct time dependence not present in controls that are incapable of proton transfer. The excess red-shift first appeared with 0.8 km·s-1 impacts. Occurring in ca. 10 ns, this NR red-shift was caused by the formation of an ion pair created by shock-triggered proton transfer from phenol to PVP.
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U2 - 10.1021/jacs.7b00876
DO - 10.1021/jacs.7b00876
M3 - Article
C2 - 28251850
AN - SCOPUS:85015930588
SN - 0002-7863
VL - 139
SP - 3974
EP - 3977
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 11
ER -