Five-Component Self-Assembly of Cucurbituril-Based Hetero-pseudorotaxanes

[5]Pseudorotaxanes can be obtained by self-sorting using heteroditopic guests and various cucurbituril homologues as hosts. The assembly and chemically induced disassembly of the pseudorotaxanes can be monitored by measuring the fluorescence of the anthracene guest in solution. Mass spectral evidence for the supramolecular assemblies is obtained in the gas phase. The disassembly in the gas phase can be achieved by collision-induced dissociation leading to the corresponding [2]- and [3]pseudorotaxanes.We acknowledge the financial support of the Ministerio de Econom &a y Competitividad, Madrid, Spain (grants CTQ2011-28390 and CTQ2014-54729-C2-1-P for U.P. and PhD fellowship BES- 2015–074458 for Z.D.), the Junta de Andaluc&a (grant P12-FQM- 2140 for U.P.), and the Fundażo para a CiÞncia e a Tecnologia, Lisbon, Portugal (grant SFRH/BD/81628/2011 for C.P.C.). H.S.E.-S. is grateful for a postdoctoral stipend from the Egyptian Ministry of Higher Education, Cairo.We acknowledge the financial support of the Ministerio de Economia y Competitividad, Madrid, Spain (grants CTQ2011-28390 and CTQ2014-54729-C2-1-P for U.P. and PhD fellowship BES2015-074458 for Z.D.), the Junta de Andalucia (grant P12-FQM2140 for U.P.), and the Fundacao para a Ciencia e a Tecnologia, Lisbon, Portugal (grant SFRH/BD/81628/2011 for C.P.C.). H.S.E.-S. is grateful for a postdoctoral stipend from the Egyptian Ministry of Higher Education, Cairo