5FANG Qi1, LEI Hong2, CUI Yuezhi3, HUANG Zhenli4, XUE Gang1 & YU Wentao1 1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China,2. School of Information Science and Engineering, Shandong University, Jinan 250100, China,3. Department of Chemical Engineering, Light Industry College of Shandong, Jinan 250100, China,4. Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China.Large second-order optical nonlinearities of s-triazine derivatives: View from micro molecules to macro crystals[J].Science China Chemistry,2005,48(3):203-209.