1. (a) J.M. Lehn, Supramolecular Chemistry: Concepts and Perspectives, VCH, Weinheim, 1995.
2. (b) S. Leininger, B. Olenyuk, P.J. Stang, Chem. Rev. 100 (2000) 853.
3. (c) V.L. Pecoraro, A.J. Stemmler, B.R. Gibney, J.J. Bodwin, H. Wang, J.W. Kampf, A. Barwniski, Prog. Inorg. Chem. 45 (1997) 83.
4. Some selected examples: (a) M. Kondo, T. Yoshitomi, K. Seki, H. Matsuzaka, S. Kitakawa, Angew. Chem., Int. Ed. Engl. 36 (1997) 1725. (b) O.R. Evans, R.-G. Xiong, Z. Wang, G.K. Wong, W. Lin, Angew. Chem., Int. Ed. Engl. 38 (1999) 536. (c) S.W. Keller, Angew. Chem., Int. Ed. Engl. 36 (1997) 247. (d) K.E. Schwiebert, D.N. Chin, J.C. MacDonald, G.M. Whitesides, J. Am. Chem. Soc. 118 (1996) 4018. (e) M.-L. Tong, X.-M. Chen, X.-L. Yu, T.C.W. Mak, J. Chem. Soc., Dalton Trans. (1998) 5. (f) M. Fujita, Y.J. Kwon, S. Washizu, K. Ogura, J. Am. Chem. Soc. 116 (1994) 1151.
5. Nanoporous Structures by Design