[ORG-16]Octabenzo[8]circulene-based network for application in lithium ion battery

This study explores a new type of carbon-rich material, which is constructed by linking negatively curved nanographene into a covalent network and thus can in some degree mimic theoretical carbon schwarzites for application in lithium ion batteries. The negatively curved nanographene studied herein is octabenzo[8]circulene, which is found to possess excellent symmetry as well as two-dimensional π-π interaction. Polymerization of the tetrabromo derivative of octabenzo[8]circulene by the nickel-mediated Yamamoto coupling reaction enables a new carbon-rich anode material for lithium ion batteries, which exhibits a discharge capacity as high as 830 mAh·g−1 with 74% retention after 100 cycles.

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[ORG-15]Synthetic studies of low-symmetry phthalocyanines with cleavable linkers

We report herein methodological studies to prepare a series of isomerically pure phthalocyanines with various symmetries (e.g. D2h, C2h, C2v, and Cs) in a controlled manner using cleavable linkers, and the resulting deprotected analogues with free functional groups which enable further functionalization. The structural and spectroscopic features of these interesting compounds will also be reported and discussed in this presentation.

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