title: Photoreversible [2] Catenane via the Host-Guest Interactions between a Palladium Metallacycle and β-Cyclodextrin.
abstract: We report the efficient preparation of an A2D2 (A = acceptor and D = donor) metallacycle 2 = [(en)2Pd2(1)2](NO3)4, using the coordination driven self-assembly of trans-azobenzene based bispyridyl ligand 1 and (en)Pd(NO3)2 (en = ethylenediamine). In the metallacycle, the trans-azobenzene units serve both as a structural element and as sites for subsequent host-guest chemistry with β-cyclodextrin, leading to the formation of a [2] catenane 3. This catenation process is reversible and can be switched off and on in a photocontrollable manner via the trans-cis isomerization of the azobenzene units.
authors.affiliation: College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, People's Republic of China.|Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Dengqing
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.|School of Chemistry and Chemical Engineering, University of Jinan , 336 West Nanxinzhuang Road, 250022, Jinan, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Nie
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Manik Lal
authors.initials: ML
authors.lastname: Saha
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Zuoli
authors.initials: Z
authors.lastname: He
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Long
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Zhixuan
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, University of Utah , 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Stang