Slipping synthesis of cucurbit[7]uril-based [2]rotaxane in organic environment
摘要:
A dumbbell molecule with one naphthalimide and one isophthalic acid stoppers was synthesized and could fold into the cavity of cucurbit[7]uril (CB[7]) in formic acid to form a 1:1 complex. Once the solution of the complex was heated, the CB[7] ring would slip over the isophthalic acid unit, producing a stable [2]rotaxane. The energy barrier (Delta H-double dagger) of this slippage was estimated as 109 kJ mol(-1). (C) 2012 Elsevier Ltd. All rights reserved.
Slipping synthesis of cucurbit[7]uril-based [2]rotaxane in organic environment
摘要:
A dumbbell molecule with one naphthalimide and one isophthalic acid stoppers was synthesized and could fold into the cavity of cucurbit[7]uril (CB[7]) in formic acid to form a 1:1 complex. Once the solution of the complex was heated, the CB[7] ring would slip over the isophthalic acid unit, producing a stable [2]rotaxane. The energy barrier (Delta H-double dagger) of this slippage was estimated as 109 kJ mol(-1). (C) 2012 Elsevier Ltd. All rights reserved.