Supported by the National Natural Science Foundation of China( No. 20073015) and the Key Project Foundation of Ministry of Education of China(No. 1A301123).
<正>Introduction Chirality is defined as the absence of inversion symmetry,however,it is actually a pseudo-scalar of objects or figures,and does not depend for
A mesoporous MCM-48 membrane was synthesized on a coarse-pore a-alumina ceramic tube by hydrothermal treatment by using a cationic surfactant as the structure-d
<正>Introduction Although devices based on pseudorotaxanes,cantenanes,and rotaxanes are commercialized yet,several researches have been done on the applications