A pseudopolyrotaxane consisting in PPV threaded in multiple cucurbiturils

详细信息	查看全文 | 推荐本文 |

• 作者：Avelino Corma ; Hermenegildo Garcia ; Pedro Montes-Navajas
• 关键词：Host– ; guest complexes ; Organic capsules ; Wrestling polymerization ; Conducting polymers
• 刊名：Tetrahedron Letters
• 出版年：2007
• 期刊代码：109_00404039
• 类别：ch
• 出版时间：25 June 2007
• 卷：48
• 期：26
• 页码：4613-4617
• 文件大小：378 K

摘要

p-Phenylenedimethylene-1,1′-bis(tetrahydrothiophen-1-ium) dibromide (PBTHBr₂), one of the possible monomers of poly(p-phenylenevinylene) (PPV), forms a very stable complex with cucurbiturils (CBs) of the appropriate internal diameter as assessed by ¹H NMR. Using PBTH²⁺@CB[7] as starting material, the corresponding PPV@CB[7], a pseudopolyrotaxane in which phenylenevinylene units are inserted in CB[7]s, was obtained by condensation with NaOH and thermal treatment at 200 °C. Considering that many applications of PPV derive from luminescence, observation of a strong emission for PPV@CB[7] with a lifetime somewhat shorter than the pure polymer makes also this material useful for applications in nanotechnology.