| 释义 |
rotaxane, n. Chem.
Brit. |rə(ʊ)ˈtakseɪn|, U.S. |roʊˈtækˌseɪn|
[‹ German Rotaxan (G. Schill & H. Zollenkopf 1967, in Nachrichten aus Chem. u. Technik 15 149/2) > n.) + ax- (in axis axis n.1) + German -an -ane suffix.]
Any compound having a molecular structure in which a chain of atoms is threaded through a ring and, though not chemically bonded to the ring, is mechanically constrained in position by the ring's structure.
1971J. Boeckmann tr. G. Schill Catenanes, Rotaxanes & Knots i. 3 A system which has the same underlying principle as a catenane and for which the name rotaxane (Latin..axis = the axle; the ring is like a wheel on an axle..) has been suggested. 1977J. March Adv. Org. Chem. (ed. 2) iii. 85 In rotaxanes a linear portion is threaded..through a ring and cannot get away because of bulky end groups. 1998Chem. in Brit. Oct. 33/2 The area of rotaxanes and catenanes—compounds that function as molecular switches. 2000Nature 9 Nov. 153/1 Other approaches to linear motion rely on the use of rotaxanes—molecular rings threaded by strings—in which the position of the ring can be altered by electrochemical or photochemical means. |