Host-Guest Arrangement of 52 50b

saturated HPLC grade acetonitrile solution containing pyrene butyric acid (52, 2 equivalents) was added to a hot, saturated HPLC grade acetonitrile solution 

Financial support from MEC (CTQ2005-08948-C02-01/BQU, CTQ2005-08989-01-02/BQU, and CSD2006-0003), ICIQ Foundation, and Generalitat de Catalunya (2005SGR00108) is gratefully acknowledged. 

5 Ercolani, G., (ed. E. Alessio) (2006) Noncovalent Multiporphyrin Assemblies, Springer, Berlin. 

11 Experimental entropy measurements include contributions from desolvation and changes in internal structure  

12 A theoretical estimate of the entropy of association for the 6-partide aggregate reported by Whitesides et al. is in the order of 50kcalmol-1 Mammen, M., Shakhnovich, E.I., Deutch, J.M. and Whitesides, G.M. (1998) / Org. Chem., 63, 3821-3830. 

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