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Molecular Design Using Selected Concentration Effects in Optically Activated Fluorescent Matrices.

Aneta Lewkowicz1, Katarzyna Walczewska-Szewc2, Martyna Czarnomska1

  • 1Institute of Experimental Physics, Faculty of Mathematics, Physics, and Informatics, University of Gdansk, ul. Wita Stwosza 57, 80-308 Gdańsk, Poland.

International Journal of Molecular Sciences
|May 11, 2024
PubMed
Summary

Researchers developed a non-toxic cyclodimer (DAK DFO) for forensic fingerprint analysis on thermal paper. This safer alternative enhances evidence examination while maintaining spectroscopic properties.

Keywords:
absorption spectracyclodimer 1,8-diazafluoren-9-onefluorescence spectrafriction ridge analysis

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Area of Science:

  • Molecular physics
  • Forensic science
  • Materials science

Background:

  • Traditional forensic methods for porous surfaces, like thermal paper, often involve hazardous chemicals.
  • Optically active materials with specific spectroscopic properties are crucial in medicine, pharmaceuticals, and industry.
  • There is a need for safer, non-toxic alternatives in forensic analysis.

Purpose of the Study:

  • To develop novel, non-toxic procedures for examining paper evidence, specifically thermal papers.
  • To create a safer alternative for revealing forensic marks using optically active materials.
  • To investigate the spectroscopic properties and structural configuration of a novel compound.

Main Methods:

  • Utilized a polyvinyl alcohol polymer matrix to emulate thermal paper.
  • Identified and analyzed 1,8-diazafluoren-9-one (DAK DFO) as a non-toxic alternative.
  • Employed stationary absorption and emission spectroscopy, time-resolved emission studies, Raman spectroscopy, and quantum mechanical computations.

Main Results:

  • Successfully formulated a non-toxic and biocompatible cyclodimer, DAK DFO, for forensic mark detection.
  • Verified the spectroscopic attributes of DAK DFO under aggregation conditions.
  • Substantiated the cyclodimer's configuration and structural diversity using advanced spectroscopic and computational methods.

Conclusions:

  • The novel compound, DAK DFO, offers a scientifically endorsed, safer alternative for forensic fingerprint analysis.
  • The developed approach provides a significant advancement in synthetic research paradigms for forensic science.
  • This study highlights the potential of simple chemistry to yield innovative contributions to forensic methodologies.