Macromolecules
questions for the exam
2019. fall semester
I.
1. Characterize the formation reactions of polymers, especially the properties of i) radical polymerization, ii) living polymerization, iii) polycondensation and iv) polyaddition.
Determine the number average and weight average degree of polymerization as well as
the polydispersity index in
each case.
2. Define the constitution
and configuration of polymers.
Characterize the constitutions of homopolymers, copolymers linear and branched polymers and polymer networks. Compare the formation
and the constitution of hyperbranched polymers and dendrimers. Describe the inner coordinates
and apply them in the quantitative characterization of polymer configurations.
3. Describe the bases
of conformational analysis
and characterize the conformations of simple linear polymer chains. Determine the temperature dependence of the number of local and global conformations of linear polymer chains on the basis
of 3 state approximation. What is the cooperativity
of monomer units and what
is its influence on the polymer
chains?
4. Expound the elements of statistical treatment of the mesoscopic structure of polymer chains. Determine the root mean square end-to-end distance of an ideal polymer coil, applying various models. Characterize the theta temperature and the theta-state. Describe the probability density function and the radial distribution function of the end-to-end vector of the ideal chain. Determine the entropy, the conformational energy and the free energy of the ideal chain and the spring constant.
II.
- Conjugated polymers,
examples, applications
- Linear chain:
one dimensional instabilities, Peierls distortion
- LHS model, SSH model
- Effect of doping
on the properties of conjugated polymers, solitons, polarons, bipolarons
III.
- Levels of protein stucture
- Bioinformatical method
dealing with the secondary structure of proteins
- Methods dealing
with the topology of transmembrane proteins
- Disordered proteins,
the IUPred method