title: Covalent Patterning and Rapid Visualization of Latent Fingerprints with Photo-Cross-Linkable Semiconductor Polymer Dots.
abstract: Fingerprint imaging and recognition represent the most important approach in personal identification. Here we designed and synthesized oxetane-functionalized semiconductor polymer dots (Ox-Pdots) for covalent patterning and rapid visualization of latent fingerprints. The high fluorescence brightness, large Stokes shift, and excellent surface properties of the Ox-Pdots lead to fingerprint imaging with high sensitivity and resolution. Fingerprint ridge structures with the first, second, and third levels of details were clearly developed within minutes. The method was facile and robust for visualization of fingerprints on various surfaces including glass, metal, and plastics. Moreover, the oxetane groups in the Ox-Pdots undergo cross-linking reactions induced by a short-time UV irradiation, yielding 3-D intermolecular polymer network. The resulting fingerprint patterns exhibit unparalleled stability against rigorous treatment, as compared to those by traditional Pdots. Our results demonstrate that the Ox-Pdots hold great promise for latent fingerprint imaging and fluorescence anticounterfeiting applications.
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Haobin
authors.initials: H
authors.lastname: Chen
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Kaiwen
authors.initials: K
authors.lastname: Chang
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Xiaoju
authors.initials: X
authors.lastname: Men
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Sun
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Fang
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Chi
authors.initials: C
authors.lastname: Ma
authors.affiliation: ‡Key Laboratory of Biomedical Information Engineering of Education Ministry, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China.
authors.forename: Yongxi
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Shengyan
authors.initials: S
authors.lastname: Yin
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Weiping
authors.initials: W
authors.lastname: Qin
authors.affiliation: †State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, Jilin 130012, China.
authors.forename: Changfeng
authors.initials: C
authors.lastname: Wu
keywords: anticounterfeiting; fingerprint; fluorescence; nanoparticle; patterning; semiconductor polymer