Abstract
Five large size polycyclic aromatic hydrocarbons (PAHs) obtained through convergence of tetraphenylethene (TPE) onto pentacenediene or bianthracenylidene cores were synthesized and fully characterized. Such convergence strategy yielded AIEgens with aggregation-induced emission enhancement (AIEE) effect and improved fluorescence quantum yields compared with a bisect strategy where pentacenediene and anthracenylidene were inserted into bisected TPE-AIEgens. Single crystal structure and DFT calculations of such large size AIE compounds indicate that the intermolecular interactions play an important role on the quantum yields and other physiochemical properties.
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