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准教授 Spring Andrew
Characterization and Analysis
MALDI-TOF Mass Spectrometer:
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MALDI-TOF is often utilized for the analysis of biomolecules (biopolymers such as DNA, proteins, peptides and sugars) and large organic molecules (such as polymers, dendrimers and other macromolecules)
EI/FAB Mass Spectrometer:
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EI/FAB can be used to determine the elemental or isotopic signature of a sample, the masses of particles and of molecules, and to elucidate the chemical identity or structure of molecules and other chemical compounds.
NMR:
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Nuclear magnetic resonance spectroscopy is a spectroscopic technique used to observe local magnetic fields around atomic nuclei. In modern organic chemistry NMR spectroscopy has become the definitive method to identify monomolecular organic compounds and polymers. The most routine types of NMR are proton and carbon-13 NMR spectroscopy
TGA/DSC:
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Thermogravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes. Differential scanning calorimetry (DSC) is a thermo-analytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature.
GPC/SEC:​
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Gel permeation chromatography (GPC) is a type of size exclusion chromatography (SEC), that separates analytes on the basis of size, typically in organic solvents. The technique is often used for the analysis of polymers.
UV-vis:
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Ultraviolet–visible spectrophotometry (UV–Vis) refers to absorption spectroscopy or reflectance spectroscopy in part of the ultraviolet and the full, adjacent visible spectral regions. This means it uses light in the visible and adjacent ranges. In this region of the electromagnetic spectrum atoms and molecules undergo electronic transitions. UV-vis absorption measures transitions from the ground state to the excited state.
FT-IR:
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Fourier-transform infrared spectroscopy (FTIR) is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas. An FTIR spectrometer simultaneously collects high-spectral-resolution data over a wide spectral range. FTIR is often used to confirm the presence or absence of certain functional groups within organic materials.
Preparation of Materials
Kugelrohr:
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A Kugelrohr (German for "ball tube") is a short-path vacuum distillation apparatus typically used to distill relatively small amounts of compounds with high boiling points (usually greater than 300 °C) under greatly reduced pressure.
Radleys Carousel 12:
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A multiple reaction device allowing several organic compounds and polymers to be prepared under inert atmosphere.
Rotary Evaporator:
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A device used to remove volatile solvents from organic materials in solution.
Reaction Chiller:
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A cooling device allowing organic synthesis reactions to be carried out under very low temperatures (-78C).
Vacuum Drying Apparatus:
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An organic sample drying oven connected to a high vacuum pump allowing organic materials to be properly dried before analysis.
Fume Extraction Hood:
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An enclosed space where harmful chemical reactions can be undertaken safely.
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