study the adsorption behavior of molecules assembed on metal or nanoparticals by means of the electrochemical technique and SERS; interpret the adsorption mode of molecules on metal theoretically by assistance of computational methods of quantum chemistry; study the optical properties of organic molecules in theory; design functional molecules for dye-sensitized solar cell.

Representative Publications ：

1.Third-order Nonlinear Optical Properties of a New Type of D-π-D Unsymmetrical Phenoxazinium Chloride with Resonance Structures, Jian-Feng Ge, Yue-Ting Lu, Qing-Feng Xu, Wu Liu, Na-Jun Li,Ru Sun*, Ying- Lin Song, Jian-Mei Lu, Chemical Physics 382 (2011) 74–79

2. Third-Order Nonlinear Optical Properties Of Symmetric Phenoxazinium Chlorides With Resonance Structures At 532 nm, Jian-Feng Ge, Yue-Ting Lu, Ru Sun* , Jian Zhang, Qing-Feng Xu, Na-Jun Li, Ying-Lin Song, Jian-Mei Lu, Dyes and Pigments 91 (2011) 489-494

3. A Small-Molecule-Based Ternary Data-Storage Device, Hua Li, Qingfeng Xu, Najun Li,Ru Sun, Jianfeng Ge, Jianmei Lu,* Hongwei Gu,* and Feng Yan,J. AM. CHEM. SOC. 2010,132, 5542–5543

4. The synthesis and third-order nonlinear optical properties of resonance Benzo[a]phenoxazinium salts,Bao-Qiang Liu,Ru Sun, Jian-feng Ge, Najun Li, Xue-Liang Shi, Lihua Qiu, Jian-Mei Lu, Dyes and Pigments 88 (2011) 50-56

5. Dynamic Random Access Memory Devices Based on Functionalized Copolymers with Pendant Hydrazine Naphthalimide Group, Hua Li, Najun Li, Ru Sun , Hongwei Gu, Jianfeng Ge, Jianmei Lu, Qingfeng Xu, Xuewei Xia, and Lihua Wang, J. Phys. Chem. C 2011, 115, 8288-8294

6. Raman spectroscopic and density functional theory studies on a benzothiazole-2-thione derivative,Ru Sun, Jianlin Yao, Shujin Li, Renao Gu, Vibrational Spectroscopy ， 2008 ， 47 ： 38–43.

7. Predicting the binding capability of benzothiazoline-2-thione and its derivatives with gold: A DFT and FT-Raman combined studies,Ru Sun, Jianfeng Ge, Jianlin Yao, Shujin Li, Hongxia Shen, Renao Gu,Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2008 ， 71: 1535–1539.