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- W2047346673 abstract "We have designed and synthesized asymmetric cyano-stilbene derivatives containing trifluoromethyl (−CF3) substituents with the aim of producing tightly packed π-dimer systems that as crystals exhibit reversible [2 + 2] cycloaddition with characteristic fluorescence modulation. (Z)-3-(3′,5′-Bis(trifluoromethyl)biphenyl-4-yl)-2-(4′-(trifluoromethyl)biphenyl-4-yl)acrylonitrile (CN(L)-TrFMBE) and its derivatives were found to form antiparallel π-dimer stacks in crystals due to their specific intermolecular interactions, including C−F···H and C−F···π interactions. The CN(L)-TrFMBE π-dimer crystals (and powder) are not at all fluorescent initially but switch to a highly fluorescent state (ΦPL = 24%) when an external shear-strain and/or prolonged UV (365 nm) irradiation is applied. Our experimental and theoretical investigations show that the fluorescence modulation in this particular system is due to the external and/or internal (in the case of UV irradiation) shear-induced lateral displacement of the π-dimer molecular pair, which effectively turns the fluorescence emission on at the cost of frustrated [2 + 2] cycloaddition. Further, the fluorescence ‘off’ state can be restored by thermal annealing, which regenerates the tightly packed π-dimer by reverse displacement together with the thermal dissociation of the [2 + 2] cycloaddition product. This system provides a very rare example of high-contrast reversible fluorescence switching that is driven by a change in the molecular packing mode in the solid state, which enables piezochromic and photochromic responses." @default.
- W2047346673 created "2016-06-24" @default.
- W2047346673 creator A5007366989 @default.
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- W2047346673 creator A5088452990 @default.
- W2047346673 creator A5091022747 @default.
- W2047346673 creator A5091883678 @default.
- W2047346673 date "2009-05-22" @default.
- W2047346673 modified "2023-10-16" @default.
- W2047346673 title "Shear- and UV-Induced Fluorescence Switching in Stilbenic π-Dimer Crystals Powered by Reversible [2 + 2] Cycloaddition" @default.
- W2047346673 cites W1597737982 @default.
- W2047346673 cites W1827274357 @default.
- W2047346673 cites W1855894052 @default.
- W2047346673 cites W1942616758 @default.
- W2047346673 cites W1965067134 @default.
- W2047346673 cites W1971906488 @default.
- W2047346673 cites W1972747430 @default.
- W2047346673 cites W1973547532 @default.
- W2047346673 cites W1976056688 @default.
- W2047346673 cites W1976138670 @default.
- W2047346673 cites W1983573967 @default.
- W2047346673 cites W1984915191 @default.
- W2047346673 cites W1985955577 @default.
- W2047346673 cites W1988607914 @default.
- W2047346673 cites W1991092522 @default.
- W2047346673 cites W1991529531 @default.
- W2047346673 cites W1995075659 @default.
- W2047346673 cites W2001175141 @default.
- W2047346673 cites W2002077062 @default.
- W2047346673 cites W2004248055 @default.
- W2047346673 cites W2008747699 @default.
- W2047346673 cites W2008800421 @default.
- W2047346673 cites W2015079217 @default.
- W2047346673 cites W2017017287 @default.
- W2047346673 cites W2018479364 @default.
- W2047346673 cites W2018616260 @default.
- W2047346673 cites W2020693802 @default.
- W2047346673 cites W2022985556 @default.
- W2047346673 cites W2024407110 @default.
- W2047346673 cites W2025349484 @default.
- W2047346673 cites W2025394858 @default.
- W2047346673 cites W2028990075 @default.
- W2047346673 cites W2030577313 @default.
- W2047346673 cites W2031709208 @default.
- W2047346673 cites W2036095283 @default.
- W2047346673 cites W2038736636 @default.
- W2047346673 cites W2041117474 @default.
- W2047346673 cites W2041702532 @default.
- W2047346673 cites W2042953778 @default.
- W2047346673 cites W2044143822 @default.
- W2047346673 cites W2045403572 @default.
- W2047346673 cites W2046155834 @default.
- W2047346673 cites W2050175465 @default.
- W2047346673 cites W2053113141 @default.
- W2047346673 cites W2054186728 @default.
- W2047346673 cites W2056191603 @default.
- W2047346673 cites W2056768161 @default.
- W2047346673 cites W2057573859 @default.
- W2047346673 cites W2058491750 @default.
- W2047346673 cites W2061837305 @default.
- W2047346673 cites W2062352532 @default.
- W2047346673 cites W2063269230 @default.
- W2047346673 cites W2067816052 @default.
- W2047346673 cites W2069755098 @default.
- W2047346673 cites W2073591079 @default.
- W2047346673 cites W2074228196 @default.
- W2047346673 cites W2074908958 @default.
- W2047346673 cites W2074991934 @default.
- W2047346673 cites W2077590763 @default.
- W2047346673 cites W2078262700 @default.
- W2047346673 cites W2080992841 @default.
- W2047346673 cites W2081931500 @default.
- W2047346673 cites W2084534953 @default.
- W2047346673 cites W2087258723 @default.
- W2047346673 cites W2087885978 @default.
- W2047346673 cites W2088659286 @default.
- W2047346673 cites W2089239864 @default.
- W2047346673 cites W2089272502 @default.
- W2047346673 cites W2090329067 @default.
- W2047346673 cites W2090812921 @default.
- W2047346673 cites W2091991108 @default.
- W2047346673 cites W2093504098 @default.
- W2047346673 cites W2095915347 @default.
- W2047346673 cites W2100599943 @default.
- W2047346673 cites W2123689437 @default.
- W2047346673 cites W2124364120 @default.
- W2047346673 cites W2140204263 @default.
- W2047346673 cites W2144293799 @default.
- W2047346673 cites W2145441623 @default.
- W2047346673 cites W2153138656 @default.
- W2047346673 cites W2153387011 @default.
- W2047346673 cites W2158645946 @default.
- W2047346673 cites W2159113781 @default.
- W2047346673 cites W2165426381 @default.
- W2047346673 cites W2950796052 @default.