Study of the semidilute solutions of poly(N,N-dimethylacrylamide) by fluorescence and its implications to the kinetics of coil-to-globule transitions

Article Abstract:

The dynamics of poly(N,N-dimethylacrylamide) chains randomly labeled with pyrene (Py-PDMA) were monitored by steady-state fluorescence in the semidilute medium of naked PDMA in acetone and DMF. Increasing polymer concentration led to a decrease in the mobility of the chromophore attached to PDMA and was characterized by the number of monomers occupying the volume probed by the excited chromophore or fluorescence blob.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Nitrogen Compounds, Chemical reaction, Rate of, Chemical kinetics, Chemical properties, Chromophores

---

Time-resolved and steady-state fluorescence studies of hydrophobically modified water-soluble polymers

Article Abstract:

A comprehensive study of the photophysical behavior of poly(acrylic acids) randomly labeled with pyrene employing steady-state and time resolved fluorescence spectroscopy is reported. Time-resolved fluorescence spectroscopy is found to be a powerful technique in the interpretation of the photophysical behavior of these pyrene-labeled PAA polymers.

Observations, Optical properties, Chemistry, Physical and theoretical, Physical chemistry, Structure

---

Maleated ethylene-propylene random copolymers: determination of the microstructure and association level by fluorescence spectroscopy

Article Abstract:

The experiments were conducted using fluorescence spectroscopy to study the microstructure of ethylene-propylene copolymers. The results show that 70% of all pyrene groups were located at small distances from one another and form excimer readily and in apolar hexane, 87% of all pyrene groups are involved into loose pyrene aggregates.

Analysis, Molecular structure, Atomic properties

Similar abstracts:

• Abstracts: Effects of temperature and of the addition of accelerating and retarding agents on the kinetics of hydration of tricalcium silicate
• Abstracts: Characterization of cyanine dye-labeled poly (N-isopropylacrylamide) core/shell microgels using fluorescence resonance energy transfer
• Abstracts: Barriers to forced transitions in polysaccharides. Free energy surfaces for the alpha(1 -> 4)-glycosidic linkage: Implications for polysaccharide solution structure and dynamics
• Abstracts: Zirconia-supported MoO (sub x) catalysts for the selective oxidation of dimethyl ether to formaldehyde : structure, redox properties, and reaction pathways
• Abstracts: Effect of fructose, sucrose, and dimethyl sulfoxide on the equilibrium thickness of DMPC foam films. Effect of the charged lipid DMPG on the thickness and contact angle of foam films

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.