Transcript Quantum Dot Research

Quantum Dot Research
Week 6 Lab
S117 Fall 2011
Overview
• Post-Lab
– Results of Affinity Chromatography
• Pre-lab: Quantum Dot Research
– Nanomaterials
– Band gap theory
– Synthetic strategy
– The experiment
Affinity Chromatography
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Trouble-shooting
Possible sources of error?
Possible solutions?
The question: What is the next step we can
take to improve our experiment?
Quantum Dot Research
nanomaterials
Nanomaterial Application
– Drug delivery
– Ultrafiltration
– Catalysis
– Energy storage/
utilization
Intensive and Extensive Properties on
the Nanoscale
Small Molecules and Bulk Materials
From J. Chem. Ed. Vol 84 pp709-710
Particle in a Box!
Band Gap Affects Properties
Synthetic Strategy
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Control nanoparticle growth!
Time dependence
Emulsion
Colloidal suspension
Conductors, Insulators, and
Semi-conductors
The Experiment
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http://mrsec.wisc.edu/Edetc/nanolab/CdSe/index.html
Some Key Points
• Safety with toxic chemicals
• Patience with the temperature
• Temperature quenching
– Safety first! (Practice transfers.)
– Quickness second!
– Time accuracy third!