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COMMUNICATION
Journal Name
uniform size and spherical morphology, but also due to the
electrostatic binding between positively charged powders and
negatively charged fatty acids, lactic acids or phosphate group
of DNA in fingermark residues (as exemplified in Fig. 5).
Automatic fingerprint identification system (AFIS) is the
authoritative tool to quantitatively evaluate fingermark image
quality based on second-level features. To reveal the
superiority of our nanopowder, commercial phosphor,
superglue fuming and magnetic ferric powder which are most
frequently used in practice are picked as controls. According to X. Liu, M. J. Huang, D. Wang and R. L. Liu, Dalton T, 2018, 47, 5823-
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3634-13637.
DOI: 10.1039/C9CC04257A
. a)Y. Li, L. R. Xu and B. Su, Chem Commun, 2012, 48, 4109-
111; b)R. Suresh, S. K. Thiyagarajan and P. Ramamurthy, Sensor
Actuat B-Chem, 2018, 258, 184-192; c)Z. J. Qiu, B. Hao, X. G. Gu,
Z. Y. Wang, N. Xie, J. W. Y. Lam, H. X. Hao and B. Z. Tang, Sci China
Chem, 2018, 61, 966-970.
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. a)D. Fernandes, M. J. Krysmann and A. Kelarakis, Chem
Commun, 2015, 51, 4902-4905; b)D. Fernandes, M. J. Krysmann
and A. Kelarakis, Chem Commun, 2016, 52, 8294-8296; c)D. Peng,
the result (Table S4, ESI†), the recognition rate of second-level
feature of a 32-day fingermark using our Ce0.125La0.875
5830; d)M. Algarra, D. Bartolic, K. Radotic, D. Mutavdzic, M. S.
Pino-Gonzalez, E. Rodriguez-Castellon, J. M. Lazaro-Martinez, J. J.
Guerrero-Gonzalez, J. C. G. E. da Silva and J. Jimenez-Jimenez,
Talanta, 2019, 194, 150-157.
3
(SSA) Phen nanopowder reaches as high as 90.4%, which is
higher than commercial phosphor with 24.6%, 31.5% by
superglue fuming and 49.3% by magnetic ferric powder under
identical conditions, respectively. For the fresh fingermark
recognition, our powder could reveal 72 minutiae with a
recognition rate of 98.6% with sharp edges and well-defined
ridge details (Fig. S9, ESI†). In a word, the results from AFIS
analyses have once again confirmed the advantages of
Ce0.125La0.875(SSA) Phen nanopowder over traditional methods
3
of developing LFMs in forensics.
x
In summary, we have described the novel use of Ce La1-
5
. a)J. Wang, T. Wei, X. Y. Li, B. H. Zhang, J. X. Wang, C. Huang
and Q. Yuan, Angew Chem Int Edit, 2014, 53, 1616-1620; b)M.
Wang, Rsc Adv, 2016, 6, 36264-36268; c)J. K. Wang, N. He, Y. L.
Zhu, Z. B. An, P. Chen, C. A. Grimes, Z. Nie and Q. Y. Cai, Chem
Commun, 2018, 54, 591-594.
6
. a)D. Zhou, L. Di, P. T. Jing, Y. C. Zhai, D. H. Shen, S. N. Qu and
A. L. Rogach, Chem Mater, 2017, 29, 1779-1787; b)Q. Chang, Y.
Ding, S. Cheng, W. Shen, Z. Zhou, Y. Yin, T. Sun, C. Ban, Z. Deng, J.
Liu, F. Xiu and W. Huang, Nanoscale, 2019, 11, 2131-2137.
7. X. Ran, Z. Z. Wang, Z. J. Zhang, F. Pu, J. S. Ren and X. G. Qu,
Chem Commun, 2016, 52, 557-560.
x 3
(SSA) Phen nanocomposite powder as fluorescent probe for
8
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. a)B. D. Ward and L. H. Gade, Chem Commun, 2012, 48, 10587-
0599; b)J. R. Robinson, J. Gu, P. J. Carroll, E. J. Schelter and P. J.
highly selective recognition of LFMs in a simple, rapid and
direct way. Notably, we have demonstrated that the
Walsh, J Am Chem Soc, 2015, 137, 7135-7144; c)T. I. Kostelnik and
C. Orvig, Chem Rev, 2019, 119, 902-956; d)Y. Zhong, Z. Ma, S. Zhu,
J. Yue, M. Zhang, A. L. Antaris, J. Yuan, R. Cui, H. Wan, Y. Zhou, W.
Wang, N. F. Huang, J. Luo, Z. Hu and H. Dai, Nat Commun, 2017,
interaction between our nanopowder and fingermark residues
is not merely a physical action, but also an electrostatic mode
based on positively charged powders and negatively charged
organic groups in fingermark residues (e.g., fatty acid, lactic
acids or phosphate group of DNA in epidermic cells). And that,
this newly developed technique of fingermark recognition is
demonstrated to be compatible and non-destructive for touch
DNA test. In sum, due to the advantages over traditional
developing method and new approaches recently emerged,
our binuclear (Ce, La) nanocomposite powder is expected as a
promising fluorescent probe for forensic use and other fields.
We are grateful for the financial support by Chongqing educ
ation Commission (KJZD201800301 and KJ1711290), Chongqin
g association for science and technology (cstc2017jcyjAX0244),
Southwest University of Political Science and Law (2018XZZD-
8
, 737; e)L. A. Ekanger, L. A. Polin, Y. Shen, E. M. Haacke, P. D.
Martin and M. J. Allen, Angew Chem Int Edit, 2015, 54, 14398-
14401; f)P. Kumar, J. Dwivedi and B. K. Gupta, J Mater Chem C,
2014, 2, 10468-10475; g)Y. S. Yang, K. Z. Wang and D. P. Yan, Chem
Commun, 2017, 53, 7752-7755; h)X. G. Yang, X. Q. Lin, Y. B. Zhao,
Y. S. Zhao and D. P. Yan, Angew Chem Int Edit, 2017, 56, 7853-
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857; i)R. Gao, M. J. Zhao, Y. Guan, X. Y. Fang, X. H. Li and D. P.
Yan, J Mater Chem C, 2014, 2, 9579-9586; j)Y. S. Yang, K. Z. Wang
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Yang, X. Q. Lin, Y. S. Zhao and D. P. Yan, Chem-Eur J, 2018, 24,
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9
1
484-6493.
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0. D. Peng, X. Wu, X. Liu, M. J. Huang, D. Wang and R. L. Liu, Acs
0
7), and the Opening Project of Chongqing Institutes of Higher
Appl Mater Inter, 2018, 10, 32859-32866.
Education Key Forensic Science Laboratory (Southwest Univers 11. a)G. S. Sodhi and J. Kaur, Forensic Sci Int, 2001, 120, 172-176;
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Conflicts of interest
There are no conflicts to declare.
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Notes and references
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