As the theoretical foundation of organic chemistry, physical organic chemistry mainly deals with the relationship between structure, medium and the chemical and physical properties of organic molecules. Over the past 20 years or so, a research group under the leadership of Prof. Jiang Xikui of the CAS Shanghai Institute of Organic Chemistry, with the long-term support from the National Natural Science Foundation of China (NSFC), has carried out studies at two important frontiers of this field, i.e. aggregation and self-coiling of organic molecules, and the successful establishment and application of the sigma_(JJ) scale of spin-delocalization substituent constants. The researchers made significant contributions in their studies, which concerns with both the structural effect and medium effect, two of the important aspects of physical organic chemistry, and received the first-grade prize of the National Awards for Natural Sciences in 2002.
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