PASPEPhotochemically Accumulated Stimulated Photon Echo
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13]C NMR spectral characterization of the PASPE showed the disappearance of the [CH.
H-bonding in the PASPE displayed reduced intensity as compared to the ASP monomer and was attributed to polymer restricting the conformation corresponding to the optimum geometry for H-bonding.
PASPEs were synthesized via Michael addition followed by esterification and the resulting polyester characterized by FTIR and NMR spectroscopy.