Thermally induced polymerization of 1b, 2a, and 2b was carried out by heating a N2-purged glass tube containing a powder sample in a Kugelrohr apparatus at 1708C for 2 h. For extraction of the included polymer from 3b, the composite powder was suspended in aqueous hydrofluoric acid (55 wt%) at room temperature for 1 h, and N2 was bubbled into the resulting clear solution to flush out volatile fractions.

Absorption and fluorescence spectra were recorded in reflection mode on JASCO U-best V-560 and FL-777W spectrophotometers, respectively, with attachments for powder samples. Infrared spectra of KBr pellet samples were recorded on a JASCO FTIR-610 spectrophotometer. X-ray diffraction patterns were recorded on a Rigaku RINT 2400 diffractometer with CuKα radiation (20 kV, 50 mA) and a step size of 0.0048 at a scan speed of 18minÀ1. Optical and fluorescence micrographs were taken by an Olympus VANOX AH2-FL microscope, and excitation (395±415 nm) and emission filters (> 455 nm) were used for fluorescence microscopy. Thermogravimetric analysis (TGA) was carried out on a Shimadzu TGA-50 at a heating rate of 108C minÀ1. Transmission electron microscopy (TEM) was performed on a Hitachi H-9000UHR electron microscope operated at 300 kV.