3 sequestered by addition of an aqueous solution of sodium tetraphenylboron to produce the supramolecular entity 3, which instantaneously precipitated out of solution. This complex was purified on a cellulose gravity column (40% acetone/60% benzene) and obtained in an isolated yield of 85.3%. Several features of 3 are noteworthy:(I) Porphyrin encapsulation occurs via the secondary alcohol face of the Me-CD, as demonstrated by one-dimensional ...