Luminescence Studies of Polyelectrolyte Behavior in Solution. 3. Time-Resolved Fluorescence Anisotropy Measurements of the Conformational Behavior of Poly(methacrylic acid) in Dilute Aqueous Solutions

1994 ◽  
Vol 27 (15) ◽  
pp. 4304-4311 ◽  
Author(s):  
Ian Soutar ◽  
Linda Swanson
1989 ◽  
Vol 54 (11) ◽  
pp. 3011-3024 ◽  
Author(s):  
Vlastimil Fidler ◽  
Stefan Vajda ◽  
Zuzana Limpouchová ◽  
Jiří Dvořák ◽  
Karel Procházka ◽  
...  

The methodology of polarization time-resolved fluorometry and interpretation of its results are outlined at a general level, and the measurement on and use of facilities of the Edinburgh Instruments Model 299T apparatus are discussed in detail. The dynamics of conformational changes in chains of poly(methacrylic acid) containing covalently bonded dansyl labels are studied in aqueous solutions at various pH. It is shown that at pH > 6, the shorter effective rational correlation time τr < 2 ns corresponds to the rotation of the free dansyl label about bonds by which it is attached to the polymeric chain; at pH < 4 the longer effective rational correlation time τr = 20-26 ns corresponds to the rotation of the compact spherical formation constituted by a part of the collapsed polymeric chain in which the label is fixed and whose relative molecular mass is approx. 15 000-20 000.


Author(s):  
Yurema Teijeiro-Gonzalez ◽  
Alessandro Crnjar ◽  
Andrew J. Beavil ◽  
Rebecca L. Beavil ◽  
Jakub Nedbal ◽  
...  

2009 ◽  
Vol 20 (2) ◽  
pp. 025310 ◽  
Author(s):  
Kathleen Apperson ◽  
Jan Karolin ◽  
Robert W Martin ◽  
David J S Birch

2001 ◽  
Vol 34 (24) ◽  
pp. 8401-8404 ◽  
Author(s):  
Sangmin Jeon ◽  
Sung Chul Bae ◽  
Steve Granick

2014 ◽  
Vol 106 (2) ◽  
pp. 670a-671a
Author(s):  
Daryan Kempe ◽  
Paraskevas Lamprou ◽  
Alexandros Katranidis ◽  
Georg Büldt ◽  
Jörg Fitter

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