Yilmaz, Yasar; Uysal, Nihan; Gelir, Ali; Guney, Orhan; Aktas, Demet K.; Gogebakan, Savas; Oner, Aylin published the artcile< Elucidation of multiple-point interactions of pyranine fluoroprobe during the gelation>, Product Details of C19H34O2, the main research area is hydrogel acrylamide methylenbisacrylamide copolymer preparation fluorescence.
We have studied the multiple-point interactions of the pyranine (8-hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt; 3sPyOH) fluoroprobe with polymer chains during the free-radical polymerization of acrylamide (AAm) by using the steady state fluorescence measurements. We observed a considerable blue shift from 515 nm to 406 nm in the emission spectra due to a C-O ether bond formation between the hydroxylic oxygen of 3sPyOH and a terminal C-atom of the growing AAm chain. Furthermore ionic (electrostatic) interactions occur between the three ionized sulfonic acid groups (SO 3é?) of 3sPyOH and protonated amide groups on the AAm chains. These electrostatic interactions also cause a gradual red shift in the maximum of the short-wavelength-peak, from 406 nm to 430 nm. The pyranine can be used as a probe for real time monitoring of the polymerization process of AAm system since it monitors both the progression of the polymerization via chem. binding over OH group and the change in the local d. of the polymerizing sample by means of the gradual red shift in the short-wavelength-peak via ionic interactions over SO 3é? groups.
Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about Diffusion (of fluoroprob). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.
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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics