FLUORESCENCE STUDIES OF COMPLEXATION OF AURAMINE O LABELED POLY(METHACRYLIC ACID) AND RELATED ACRYLIC COPOLYMERS WITH NON-IONIC HOMOPOLYMERS

1999 ◽  
Vol 36 (1) ◽  
pp. 85-104 ◽  
Author(s):  
S. K. Chatterjee ◽  
Neeti Misra
Keyword(s):  
Methacrylic Acid ◽  
Fluorescence Studies ◽  
Acrylic Copolymers ◽  
Auramine O

Femtosecond fluorescence studies of Auramine O in hybrid sol-gel derived films

2004 ◽  
Vol 847 ◽  
Author(s):  
P. Prosposito ◽  
A. Quatela ◽  
H. Zhang ◽  
M. Glasbeek
Keyword(s):  
Excited State ◽  
Excited States ◽  
Sol Gel ◽  
Stokes Shift ◽  
Fluorescence Studies ◽  
Spectral Shifts ◽  
Fluorescence Upconversion ◽  
Liquid Solutions ◽  
Phenyl Rings ◽  
Auramine O

ABSTRACTFemtosecond fluorescence upconversion experiments have been performed on Auramine O (a diphenylmethane dye) in polymethylmethacrylate (PMMA) and in hybrid organic/inorganic solgel based films.All the investigated samples showed a fast decay (few picoseconds) and a long decay (hundreds of picoseconds). The fast components are representative of the rapid cooling of the excess excitation energy to the matrices. The long components are representative of the excited-state lifetime of the probed molecules. Auramine O in solid matrices showed lifetimes longer than in liquid solutions. Torsional diffusion motions of the two phenyl rings of the molecule are held responsible for the excited-state dynamics.A dynamic Stokes shift has been observed for all samples. The lack of a rise time when detection was on the red side is explained in terms of an adiabatic coupling between emissive and nonemissive excited states, as is the case of liquid solutions. Different spectral shifts in PMMA and hybrid glasses have been measured. A different coupling between the emissive and nonemissive excited states for the two types of matrices is considered.

Fluorescence Studies of the Dynamic Behavior of Poly(dimethylacrylamide) and Its Complex with Poly(methacrylic acid) in Dilute Solution

1996 ◽  
Vol 29 (3) ◽  
pp. 918-924 ◽  
Author(s):  
Ian Soutar ◽  
Linda Swanson ◽  
F. Gordon Thorpe ◽  
Changying Zhu
Keyword(s):  
Dynamic Behavior ◽  
Methacrylic Acid ◽  
Dilute Solution ◽  
Fluorescence Studies

Fluorescence studies of amphiphilic poly(methacrylic acid)-block-polystyrene-block-poly(methacrylic acid) micelles

1991 ◽  
Vol 24 (23) ◽  
pp. 6300-6305 ◽  
Author(s):  
T. Cao ◽  
P. Munk ◽  
C. Ramireddy ◽  
Z. Tuzar ◽  
S. E. Webber
Keyword(s):  
Methacrylic Acid ◽  
Fluorescence Studies

Fluorescence Studies of Self-Assembly in Aqueous Solutions of Poly(ethylene-co-methacrylic acid) Ionomers

1998 ◽  
Vol 120 (17) ◽  
pp. 4215-4221 ◽  
Author(s):  
Ewa Szajdzinska-Pietek ◽  
Marian Wolszczak ◽  
Andrzej Plonka ◽  
Shulamith Schlick
Keyword(s):  
Aqueous Solutions ◽  
Methacrylic Acid ◽  
Self Assembly ◽  
Fluorescence Studies ◽  
Poly Ethylene
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