Linear oligomers composed of a photochromically contractible and extendable Janus [2]rotaxane.

The synthesis and characterization of N,N'-p-xylylene-linked oligo-Janus [2]rotaxanes based on a permethylated alpha-cyclodextrin and their contractible and extendable nature coupled with photochromism are described.

[1]  Itamar Willner,et al.  A photoactivated 'molecular train' for optoelectronic applications: light-stimulated translocation of a β-cyclodextrin receptor within a stoppered azobenzene-alkyl chain supramolecular monolayer assembly on a Au-electrode , 2001 .

[2]  David J. Williams,et al.  An hermaphroditic [c2]daisy chain. , 2002, Chemical communications.

[3]  JungJong Hwa,et al.  The First Lipophilic Face-to-Face Dimers of Permethylated α-Cyclodextrin-Azobenzene Dyads through a p-Xylylene Spacer , 2000 .

[4]  Y. Sakata,et al.  The first Janus [2]rotaxane , 2000 .

[5]  N. Nakashima,et al.  A Light-Driven Molecular Shuttle Based on a Rotaxane , 1997 .

[6]  SakataYoshiteru,et al.  The First Competitive Formation of [4] and [2]Supercyclodextrins by Self-Association of an α-Cyclodextrin Bearing a Bisazophenol Group , 2000 .

[7]  Jean-Pierre Sauvage,et al.  Chemically induced contraction and stretching of a linear rotaxane dimer. , 2002, Chemistry.

[8]  Jean-Pierre Sauvage,et al.  Towards artificial muscles at the nanometric level. , 2003, Chemical communications.

[9]  B. Staskun.  N-Alkylation of .beta.-ketocarboxylic acid amides , 1979 .

[10]  S. Lincoln,et al.  An hermaphrodite [2]rotaxane: preparation and analysis of structure. , 2001, Organic letters.

[11]  J. Baldwin,et al.  Radical dearomatising spirocyclisations onto the C-2 position of benzofuran and indole , 2004 .

[12]  M. Jiménez,et al.  Towards Synthetic Molecular Muscles: Contraction and Stretching of a Linear Rotaxane Dimer , 2000 .

[13]  J. F. Stoddart,et al.  Template-directed synthesis of multiply mechanically interlocked molecules under thermodynamic control. , 2005, Chemistry.

[14]  Chih-Ming Ho,et al.  Linear artificial molecular muscles. , 2005, Journal of the American Chemical Society.

[15]  J. F. Stoddart,et al.  Interlocked and Intertwined Structures and Superstructures , 1996 .

[16]  Yoshihisa Inoue,et al.  Photoswitching of the association of a permethylated α-cyclodextrin-azobenzene dyad forming a Janus [2]pseudorotaxane☆ , 2001 .

[17]  Stoddart,et al.  Toward Daisy Chain Polymers: "Wittig Exchange" of Stoppers in , 2000, Organic letters.