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8. B. Meng, H. Y. Song, X. X. Chen, Z. Y. Xie, J. Liu*, L. X. Wang*,Replacing Alkyl with Oligo(ethylene glycol) as Side Chains of Conjugated Polymers for Close pi-pi Stacking, Macromolecules,2015, 48, 4357.

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7. Z. C. Ding, Z. Hao, B. Meng, Z. Y. Xie, J. Liu*, L. M. Dai*, Few-Layered Graphene Quantum Dots as Efficient Hole-Extraction Layer for High-Performance Polymer Solar Cells, Nano Energy, 2015, 15, 186.

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