2007年6月8日举行了杨贵忠同学的博士学位论文答辩会，答辩委员会主席由同济大学李新贵教授担任。杨贵忠同学的博士论文题目为“芴苯聚合物的合成、光物理性能、聚集态结构及相互关系研究”。杨贵忠同学攻读博士学位期间所发表的代表性论文如下：

1.G.Z.Yang, X.L.Chen, L.M.Wang, J.G.Shi, C.Z.Li, T.X.Liu*.Synthesis and characterization of fluorene-based rod-coil liquid crystal polymers.Polym. Adv. Technol., 2009, 20(2), 104-110.

2. G.Z.Yang, W.Z.Wang, M.Wang, T.X.Liu*.Side Chain Effect on the Structural Evolution and Properties of Poly(9,9-dihexylfluorene-alt-2,5-dialkoxybenzene) Copolymers.J. Phys. Chem. B, 2007, 111(27), 7747-7755.

3.G.Z.Yang, X.L.Chen, T.X.Liu*, C.Z.Li.Nonisothermal crystallization and melting behavior of a luminescent conjugated polymer, poly(9,9-dihexylfluorene-alt-co-2,5-didecyloxy-1,4-phenylene).J. Polym. Sci. Part B: Polym. Phys., 2007, 45(8), 976-987.

4.G.Z.Yang, X.L.Chen, Y.Xu, C.Z.Li, P.Y.Wu, T.X.Liu*.Nonisothermal Crystallization Behavior of a Luminescent Conjugated Polymer, Poly(9,9-dihexylfluorene-alt-2,5-didodecyloxybenzene).Polym. Int.,2007, 56(2), 245-251.

5. G.Z.Yang, P.Chen, T.X.Liu*, M.Wang, W.Huang.Photophysical Properties and Morphologies of Fluorene-alt-Benzene Based Conjugated Polymers.Polym. Adv. Technol., 2006, 17(7-8), 544-551.

6.G.Z.Yang, M.Wu, S.Lu, M.Wang, T.X.Liu*, W.Huang.Thermooxidative Stability of Spectra of Fluorene-Based Copolymers.Polymer, 2006, 47(13), 4816-4823.