A Magnetically Responsive Polydiacetylene Precursor for Latent Fingerprint Analysis
- Title
- A Magnetically Responsive Polydiacetylene Precursor for Latent Fingerprint Analysis
- Author
- 김종만
- Keywords
- polydiacetylene; conjugated polymer; latent fingerprint; magnetic nanoparticle; fingerprint analysis
- Issue Date
- 2016-02
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v. 8, NO 9, Page. 6245-6251
- Abstract
- A magnetically responsive diacetylene (DA) powder was developed for the visualization of latent fingerprints. A mixture of the DA and magnetite nanoparticles, applied to a surface containing latent fingermarks, becomes immobilized along the ridge patterns of the fingerprints when a magnetic field is applied. Alignment along the ridge structures is a consequence of favorable hydrophobic interactions occurring between the long alkyl chains in the DAs and the lipid-rich, sebaceous latent fingermarks. UV irradiation of the DA magnetite composite immobilized on the latent fingerprint results in the generation of blue colored PDAs. Heat treatment of the blue-colored image promotes a blue-to-red transition as well as fluorescence turn-on. A combination of the aligned pale brown colored monomeric state, UV irradiation generated blue-colored PDA state, as well as the heat treatment generated red-colored and fluorescent PDA state enables efficient visual imaging of a latent fingerprint, which is deposited on various colored solid surfaces.
- URI
- http://pubs.acs.org/doi/10.1021/acsami.6b00566http://hdl.handle.net/20.500.11754/31893
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.6b00566
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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