A new p-dimethylaminocinnamaldehyde reagent formulation for the photoluminescence detection of latent fingermarks on paper.
Dimethylaminocinnamaldehyde was re-evaluated as a wet contact reagent for the treatment of latent fingermarks on porous substrates. A new formulation (consisting of 0.028 g p-dimethylaminocinnamaldehyde, 0.84 mL glacial acetic acid, 6.2 mL ethyl acetate and 0.993 L 40-60 °C petroleum spirits) provides quick, sensitive and robust luminescent ridge detail within 3 h of treatment on both plain and thermal paper. Comparisons to existing formulations indicate improved visualisation and/or a more efficient process.
Nanochemistry Research Institute, Curtin University, Perth, Western Australia, Australia; Department of Chemistry, Curtin University, Perth, Western Australia, Australia.
Patrick
P
Fritz
Department of Chemistry, Curtin University, Perth, Western Australia, Australia.
Wilhelm
W
van Bronswijk
Nanochemistry Research Institute, Curtin University, Perth, Western Australia, Australia; Department of Chemistry, Curtin University, Perth, Western Australia, Australia. Electronic address: S.Lewis@curtin.edu.au.
Simon W
SW
Lewis
D002712:Chlorides; D002934:Cinnamates / Q000737:chemistry*; D003878:Dermatoglyphics; D006801:Humans; D007189:Indans; D007202:Indicators and Reagents / Q000737:chemistry; D049449:Luminescence; D015394:Molecular Structure; D010209:Paper; D016062:Porosity; D013050:Spectrometry, Fluorescence; D017967:Zinc Compounds
C413384:1,2-indanedione; D002712:Chlorides; D002934:Cinnamates; D007189:Indans; D007202:Indicators and Reagents; D017967:Zinc Compounds; C016837:zinc chloride; C018523:4-dimethylaminocinnamaldehyde
Amino acids; Latent fingermarks; Paper surfaces; Photoluminescence