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Substitution at the 4-position of 1,8-naphthalimide with electron-donating phenoxy or tert-butyl modified phenoxy groups, novel naphthalimide derivatives were obtained which emitted blue fluorescence with emission peaks of 425–444 nm in chloroform solution under UV irradiation, with highest relative photoluminescence quantum efficiency of 0.82. When in solid film, only compounds that contained ortho-tert-butylphenoxy...
Using an alcohol-water co-precipitation method, brown nanometer pigments with spinel structure were prepared. The relationship between crystallizing temperature and grain size was studied and a series of experiments in which the proportion of alcohol to water was changed were performed and the effect of the alcohol to water ratio on the diameter of obtained particles was analyzed. The ZnFe 2 ...
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