Heck Reaction and Polymerization Catalyzed by Anchored Palladium Complexes in Mesoporous Silica
Date Issued
2004
Date
2004
Author(s)
Wu, Chen-Lin
DOI
zh-TW
Abstract
Abstract
This thesis is composed of two parts. In the first part, we developed the procedure to modify the bipyridyl palladium complexes onto the NS-MCM (nano-sized MCM) mesoporous materials and used these catalysts for an important carbon-carbon bond coupling reaction (Heck reaction).The NS-MCM mesoporous silica (size 70-100 nm) is of uniform pore diameter (2.9 nm) and high surface area (888 m2/g), which makes this material to be useful supports for a new generation of heterogeneous catalysis. This heterogeneous catalyst proves to be extremely active and recyclable for the Heck reaction with the turn-over-number up to 106 for each cycle.
In the second part, we modified the bipyridyl palladium complexes onto fibrous MCM materials and used these materials for the Palladium-catalyzed polymerization of conjugated polymers. The conjugated polymers were formed and encapsulated in the channels of fibrous MCM. We also synthesized bulk conjugated polymers in homogeneous solution for comparison. By measuring photoluminescence spectra, we discussed the confinement effect of fibrous MCM on the physicochemical properties of conjugated polymers.
This thesis is composed of two parts. In the first part, we developed the procedure to modify the bipyridyl palladium complexes onto the NS-MCM (nano-sized MCM) mesoporous materials and used these catalysts for an important carbon-carbon bond coupling reaction (Heck reaction).The NS-MCM mesoporous silica (size 70-100 nm) is of uniform pore diameter (2.9 nm) and high surface area (888 m2/g), which makes this material to be useful supports for a new generation of heterogeneous catalysis. This heterogeneous catalyst proves to be extremely active and recyclable for the Heck reaction with the turn-over-number up to 106 for each cycle.
In the second part, we modified the bipyridyl palladium complexes onto fibrous MCM materials and used these materials for the Palladium-catalyzed polymerization of conjugated polymers. The conjugated polymers were formed and encapsulated in the channels of fibrous MCM. We also synthesized bulk conjugated polymers in homogeneous solution for comparison. By measuring photoluminescence spectra, we discussed the confinement effect of fibrous MCM on the physicochemical properties of conjugated polymers.
Subjects
鈀催化
中孔洞材料
Palladium
Heck Reaction
Polymerization
Mesoporous Silica
Type
thesis