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A series of tetraaryl-1,3-butadiene(TABD) derivatives with AIE and mechanochromic behavior have been rationally designed and synthesized(Chart 1).1,2 Two design strategies are suggested for the developing of diverse materials with high solid-state emission efficiency and significant mechanochromic performance:one strategy is endowing AIE aggregates with intermolecular hydrogen bonding interactions,and another strategy is employing fluorescent molecules with D-π-A structures as well as large steric hindrance.