TY - JOUR
T1 - Subphthalocyanine-Stoppered [2]Rotaxanes
T2 - Synthesis and Size/Energy Threshold of Slippage
AU - Kage, Yuto
AU - Shimizu, Soji
AU - Kociok-Köhn, Gabriele
AU - Furuta, Hiroyuki
AU - Pantoş, G. Dan
N1 - Funding Information:
This work was funded by the GW4 consortium (GW4-AF5-002), the University of Bath, and Grants-in-Aid for JSPS Fellows (JSPS KAKENHI Grant JP19J12257). Y.K. thanks the Kyushu University Leading Program for “Molecular System for Devices” from MEXT Japan. Y.K. is also grateful to Mr. Tiberiu M. Gianga and Ms. Dora M. Rasădean at the University of Bath for their great help and advice about molecular design and characterization.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/2/7
Y1 - 2020/2/7
N2 - Subphthalocyanine (SubPc)-stoppered [2]rotaxanes were synthesized for the first time. The rotaxane bearing unsubstituted SubPc as a stopper exhibited an equilibrium of slipping-on and slipping-off, whereas a perfluorinated SubPc stopper completely blocked slippage of the ring due to its slightly larger size. Kinetic studies revealed the Gibbs free energy of activation for the slipping-on and slipping-off processes. The optical properties of the rotaxanes, including photoinduced electron transfer, were also revealed.
AB - Subphthalocyanine (SubPc)-stoppered [2]rotaxanes were synthesized for the first time. The rotaxane bearing unsubstituted SubPc as a stopper exhibited an equilibrium of slipping-on and slipping-off, whereas a perfluorinated SubPc stopper completely blocked slippage of the ring due to its slightly larger size. Kinetic studies revealed the Gibbs free energy of activation for the slipping-on and slipping-off processes. The optical properties of the rotaxanes, including photoinduced electron transfer, were also revealed.
UR - http://www.scopus.com/inward/record.url?scp=85078676432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85078676432&partnerID=8YFLogxK
U2 - 10.1021/acs.orglett.9b04620
DO - 10.1021/acs.orglett.9b04620
M3 - Article
C2 - 31942791
AN - SCOPUS:85078676432
VL - 22
SP - 1096
EP - 1101
JO - Organic Letters
JF - Organic Letters
SN - 1523-7060
IS - 3
ER -