Polyorganosiloxane-europium() host-guest inclusion system and its energy transfer luminescence

Polyorganosiloxane-europium (Ⅲ) host-guest

inclusion system and its energy transfer

luminescence

作者：许辉;郑敏;曹明;谢萍;白凤莲;张榕本; 作者机构：;;;;;; 来源：中国科学 年：1999 卷：000 期：004

页码：P.351-356 页数：6 中图分类：O631 正文语种：CHI

关键词：polyorganosiloxane-Eu(Ⅲ) host-guest clathrate nanotubular cavity luminescent probe energy transfer.

摘要：The Eu(Ⅲ) ion, as a luminescent probe, is incorporated into a novel nanotube-contained polyorganosiloxane (POS), which is obtained by coupling of ladderlike polyvinylsilsesquioxane (Vi-T) with

tetramethyldisiloxane (H-MM) via hydrosilylation, to form POS-Eu(Ⅲ) composite. The results from fluorescent study demonstrate that the composite is actually a host-guest clathrate which includes the Eu(Ⅲ) ions in the tubelike cavity of POS and moreover, the supramolecular clathrate exhibits an obvious energy transfer process which converts the UV light absorbed by POS into the visible light generated from the Eu(Ⅲ) luminescence. Molecular simulation also gives support to the