Abstract
A novel mechano-responsive luminescent (MRL) material based on crystal-to-crystal phase transitions between crystals of a chiral and those of a centrosymmetric space group, accompanied by a change of emission properties, is described. Initially, a gold complex containing a biphenyl moiety, which exhibits an achiral structure in solution, afforded an orange-emitting amorphous phase together with a viscous isotropic oil after evaporation of the solvent. Upon pricking, the orange-emitting oil spontaneously crystallized either in a centrosymmetric or in a chiral space group while simultaneously changing the emission properties. Remarkably, grinding the chiral crystals induced a solid-state phase transition to the achiral crystals under concomitant changes of the emission properties.
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Jin, M. (2020). Mechano-Responsive Luminescence via Crystal-to-Crystal Phase Transitions Between Chiral and Non-chiral Space Groups. In: Novel Luminescent Crystalline Materials of Gold(I) Complexes with Stimuli-Responsive Properties. Springer Theses. Springer, Singapore. https://doi.org/10.1007/978-981-15-4063-9_4
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DOI: https://doi.org/10.1007/978-981-15-4063-9_4
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