(Downloads - 0)
For more info about our services contact : help@bestpfe.com
Table of contents
Chapter 1 Surface Plasmons, Fluorescence and Their Coupling
1.1 Surface Plasmon Resonance
1.1.1 Introduction to Plasmon resonance
1.1.2 Propagating Surface Plasmon Resonance (PSPR)
1.1.3 Localized Surface Plasmon Resonance (LSPR)
1.1.4 Optical properties of metal nanoshells
1.2 Fluorescence
1.2.1 Introduction to the fluorescence phenomenon
1.2.2 Characteristics of Fluorescence Emission
1.2.3 Classification of Fluorescent Substances
1.2.4 Colloidal Semiconductors
1.2.4.1 Introduction to Colloidal Semiconductors
1.2.4.2 Nanocrystal Structure
1.2.4.3 Optical properties
1.3 The interaction between plasmons and excitons
1.3.1 Weak coupling between surface plasmons and excitons
1.3.1.1 Enhancement of fluorescent intensity
1.3.1.2 New phenomena arising from the coupling between excitons and plasmons
1.3.2 Strong coupling between surface plasmons and excitons References
Chapter 2 Synthesis of Quantum Dots and Their Incorporation in Silica
2.1 Synthesis of QDs
2.1.1 Introduction
2.1.2 Precursors preparation
2.1.3 Synthesis of 6 nm-in-radius-CdSe/CdS core/shell QDs
2.1.3.1 Synthesis of CdSe QDs
2.1.3.2 Formation of a CdS shell on CdSe cores
2.1.4 Synthesis of 15 nm-in-radius-CdSe/CdS core/shell QDs
2.1.4.1 Synthesis of CdSe cores
2.1.4.2 Formation of a CdS shell on CdSe cores
2.1.5 Synthesis of CdSe/CdS/ZnS
2.1.5.1 Synthesis of CdSe/CdS
2.1.5.2 ZnS shell growth
2.2 Synthesis of QD/SiO2
2.2.1 Introduction
2.2.2 Selection of surfactant
2.2.2.1 Synthesis of QD/SiO2 NPs with Igepal CO-520
2.2.2.2 Synthesis of QD/SiO2 NPs with Triton X-100
2.2.2.3 The effect of the surfactant on the QD/SiO2 NPs size
2.2.3 Effect of the QDs amount
2.2.4 Growth of thicker SiO2 layer via Stöber method
2.2.4.1 Regrowth of silica on QD/SiO2 NPs (radius-62 nm)
2.2.4.2 Regrowth of silica on QD/SiO2 NPs (radius-25 nm)
2.2.4.3 The effect of the QD/SiO2 starting size on the silica regrowth
2.2.5 Conclusions
Chapter 3 Generalized Synthesis of QD/SiO2/Au Core/shell/shell Nanoparticles
3.1 Introduction
3.2 Functionalization of QD/SiO2 NPs
3.2.1 Synthesis of poly(1-vinylimidazole-co-vinyltrimethoxysilane), PVIS
3.2.2 Functionalization of the surface of QD/SiO2 NPs with PVIS or APTMS
3.3 Gold seeds adsorption
3.3.1 Preparation of the gold seeds solution
3.3.2 Adsorption of the gold seeds onto QD/SiO2 NPs
3.3.3 Determination of the optimal amount of PVIS for the functionalization of QD/SiO2 NPs
3.3.4 Effect of the functionalizing agent on the amount of adsorbed gold seeds
3.3.5 Effect of the pH on the amount of adsorbed gold seeds
3.3.5.1 PVIS-functionalized QD/SiO2 NPs
3.3.5.2 APTMS-functionalized QD/SiO2 NPs
3.3.6 Fresh gold seeds adsorption
3.3.6.1 Effect of the functionalizing agent on the amount of adsorbed fresh gold seeds
3.3.6.2 Effect of the gold seeds aging on the amount of PVIS-adsorbed gold seeds
3.3.6.3 Effect of the pH on the amount of PVIS-adsorbed fresh gold seeds
3.4 Growth of the gold nanoshell from QD/SiO2/Auseeds NPs
3.4.1 Reduction methods tested
3.4.2 Results, interpretations and choice of the reduction method
3.4.3 PVP-K12-assisted gold nanoshell growth
3.4.4 Effect of the gold seeds coverage density
3.4.4.1 Gold seeds coverages obtained with APTMS or PVIS
3.4.4.2 Gold seeds coverages obtained with PVIS at different pH values
3.4.5 Effect of the monolayer/multilayer adsorption of the freshly-made gold seeds
3.4.6 Synthesis of golden QDs with tailored thicknesses of gold and silica
3.4.6.1 Adjustment of the gold nanoshell thickness on QD/SiO2 NPs with a fixed size
3.4.6.2 Gold nanoshell formation on QD/SiO2 with various silica thicknesses
3.5 Conclusion
Chapter 4 Optical Properties of Golden QDs
4.1 Introduction
4.2 Optical study of golden 15 nm-in-radius-QDs
4.2.1 Mechanisms of the fluorescence emission for CdSe/CdS QDs and for golden QDs
4.2.2 Ensemble measurements
4.2.3 Single nanoparticle measurements
4.2.4 Photostability
4.3 Conclusion
Chapter 5 Self-assembled Colloidal Superparticles
5.1 Introduction
5.2 Synthesis of SPs
5.2.1 Self-assembly of hydrophobic nanocrystals: the mechanism
5.2.2 Synthesis of colloidal SPs via self-assembly of QDs
5.2.3 Adjustment of the size of SPs
5.3 The incorporation of SPs in silica
5.3.1 The effect of injection solvent on the silica shell growth
5.3.2 The effect of PVP molecular weight on the silica shell growth
5.3.3 Growth of thick silica shell on SPs/SiO2
5.4 Synthesis of SPs and SPs/SiO2 from different types of nanocrystals
5.5 Synthesis of SPs/SiO2/Au nanoshells (golden SPs)
5.6 Conclusion
