【摘 要】
:
A novel acrylic monomer bearing aromatic ethereality group N-(p-phenoxy-phenyl) methacrylamide(MAPOA) was synthesized and polymerized. The fluorescence spectra
【机 构】
:
Laboratory of Lubrication and Functional Materials,Lanzhou Institute of Chemistry and Physics
论文部分内容阅读
A novel acrylic monomer bearing aromatic ethereality group N-(p-phenoxy-phenyl) methacrylamide(MAPOA) was synthesized and polymerized. The fluorescence spectra of MAPOA and its polymer were studied, showing that the polymer displays a stronger fluorescence than its monomer at the same chromophore concentration. The fluorescence of P(MAPOA) was quenched by adding electron deficiency monomers such as MMA, AN etc.. It is another example of showing the "fluorescence structural self-quenching effect" as we reported previously, from which it is demonstrated again that this phenomenon is not an accidental one but a common effect for acrylic monomers bearing electon-donating chromophores. The photopolymerization of AN sensitized by MAPOA and P(MAPOA) was studied. The kinetic equation of the polymerization was obtained and represented as follows: Rp∝[MAPOA]0.38×[AN]0.78,Rp∝[P(MAPOA)]0.33×[AN]0.71The overall activation energies were determined to be Ea=24.22 kJ/mol(MAPOA) and Ea=26.31 kJ/mol[P(MAPOA)] respectively. The fluorescence analysis of the resulted P(AN) showed that the sensitizer also entered into the P(AN) chains. A mechanism of the formation of a charge transfer complex and free radical initiation was suggested for the photopolymerization of AN sensitized by MAPOA and P(MAPOA).
其他文献
A mononuclear copper(II) complex, [Cu(bipy)(naph)(ClO4)] (where bipy is bipyridine and naph is 2-hydroxy-1-naphthaldehyde), was synthesized and characterized by
The one plus one (1 + 1) mode of hydrosilation reaction of ladderlike cis-isotatic polyallylsilsesquioxane (AllyI-T)and polyhydrosilsesquioxane (H-T) using dicy
In the present paper, the behavior of a single polymer chain under various solvent conditions was modeled by self-avoiding walks (SAW) with nearest neighbors at
This paper discusses three kinds of BVPs of elliptic system (E1) on the complementary domain of disk. The results, based on Fourier analysis method, not only en
In this first paper of a series, we study the difference discrete variational principle in the framework of multi-parameter differential approach by regarding t
Fe-Cu thin films of 0.2μm in thickness with different Cu contents were prepared byusing r.f. magnetron sputtering onto glass substrate. The effect of sputterin
We present a large sample which includes 82 BL Lac objects with redshifts below 0.2 from recent literature. We find strong correlations in both flux and luminos
A kind of aziridine crosslinkers was synthesized and used to crosslink acrylate copolymers. The crosslinking properties and curing kinetics of the resin were st
A silica-supported zirconium based solid acid (ZS) has been used as catalyst for the Fries rearrangement of phenyl acetate (PA). The catalyst showed a higher P
The title compounds Mo3S4(dtp)3(o-CH3OC6H4COO)(Py) 1 and Mo3S4 (dtp)3(p-HOC6H4COO)(DMF)·EtOH 2 (dtp = diethyldithiophosphate) were synthesized by the reactions