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Simple and efficient detection and mapping method based on a strong turn‐on fluorescent pigment was developed for fingerprint analysis. We present a phosphor powder characterized by strong emission which is useful to achieve better fingerprint detection on multicolored or photoluminescent surfaces, such as currency notes characterized by optically changeable inks and highly fluorescent positions,...
The chromophore 2–2‐(3‐cyano‐5,5‐dimethyl‐4‐((2‐[thiazol‐2‐yl]hydrazono)methyl)‐furan‐2(5H)‐ylidene)malononitrile (TzHTCF) was prepared by diazo‐coupling of diazotized 2‐aminothiazole with 3‐cyano‐2‐(dicyanomethylene)‐4,5,5‐trimethylfuran (TCF). The TzHTCF absorption solvatochromism, in different polarity solvents, demonstrated a ΔEmax = +4.74 in which the positive sign implied the occurrence of a...
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