How can one distinguish between neutral polymer molecules, polaron, and bipolarons experimentally (what techniques/instruments are used)?
How can one distinguish between neutral polymer molecules, polaron, and bipolarons experimentally (what techniques/instruments are used)?
Homework Answers
Polarons and bipolarons are characterized by Electron-spin resonance or Electron-paramagnetic resonance spectroscopy (ESR/EPR spectroscopy).
Whereas the neutral polymer molecules are characterized by the regular Gel-permeation chromatography (GPC), thermal gravimetry analysis (TGA that gives melting temperature (Tm)).
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How can one distinguish between neutral polymer
molecules, polaron, and
bipolarons experimentally (what
techniques/instruments are used)?
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Question 29 1 pts IR spectroscopy can not be used to distinguish between the following molecules. The molecules would give rise to identical IR spectrum. OH OH O True False
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How would you experimentally distinguish between an octahedral and square planar d8 metal complex?
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Question 29 1 pts IR spectroscopy can not be used to distinguish between the following molecules. The molecules would give rise to identical IR spectrum. OH OH O True False
11. One-dimensional polymer, consider a polymer formed by connecting N disc-shaped molecules into a one-dimensional chain. Each molecule can align along either its long axis (of length 2a) or short axis (length a). The energy of the monomer aligned along its shorter axis is higher by e, that is, the total energy is H = 0, where U is the number of monomers standing up. (a) Calculate the partition function, Z(T, N), of the polymer. (b) Find the relative probabilities...
Paragraph Styles 7. Distinguish between HDL and LDL cholesterol. What calculation is used to determine the heart attack risk factor ratio? 8. 9. Define the following: atherosclerosis, chylomicrons Describe how elevated cholesterol can be managed. 10.
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