Engineering where the energy goes in and where it
comes out
MEH-PPV loaded into a mesoporous silica composite
1: A single polymer chain can be loaded into each micropore
2: Part of the chain extends beyond the
micropore
3: Energy (light) is captured everywhere but preferentially transfers into extended chain conformations in the pore
4: Emission is
preferentially polarized
From: Thuc-Quyen Nguyen, Junjun Wu, Vinh Doan, Benjamin J. Schwartz, Sarah H. Tolbert, Science 288
(2001)