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A dual-stimuli-responsive intelligent layered lanthanide hydroxide for application in information security and latent fingerprint identification

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Journal of Rare Earths 2022年第11期40卷 1715-1727,I0002页

作者： Jun Xu Tinghui Zhu Jianchao Shi Bo Song Lina Zhang Dan Zhao Xiyan Dong Ning Bi Jian Gou Lei Jia College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454000China State Key Laboratory of Fine Chemicals School of ChemistryDalian University of TechnologyDalian 116024China

With the rapid changes in the field of information,the research and development of optical storage materials with high security and large storage capacity are particularly important in the development of contemporary society.However,conventional memo ry materials with static fluorescent outputs have the disadvantages of easy simulation and forgery,which limits their practical application in the protection of confidential information.In this research,a dual-stimuli-responsive intelligent fluorescent material based on Tb^(3+)and Eu^(3+)ions doped layered lanthanide hydroxide(LYH:Eu_(x)Tb_(1-x)DPA)was fabricated,which can realize reversible multi-color luminescence conversion(from green to red)by varying the pH and temperature.Combined with the Morse code and security pattern,the multiple encryption and decryption of confidential information and anti-counterfeiting can also be realized.Therefore,the obtained intelligent fluorescent material has a great application prospect for information security.In addition,due to the excellent color tunability,the material can provide the possibility to obtain potential fingerprints with high contrast and no background interference on different color substrates.The unique dual-stimuli-responsive behavior of this material provides more ingenious design inspiration for the design of multi-color intelligent fluorescent devices.

关键词： Layered lanthanide hydroxides Dual-stimuli-responsive Encryption Decryption latent fingerprint Rare earths

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Natural interface-mediated self-assembly of graphene-isolatednanocrystals for plasmonic arrays construction and personalized information acquisition

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Nano Research 2022年第10期15卷 9327-9333页

作者： Shen Wang Tianhuan Peng Shengkai Li Linlin Wang Liang Zhang Zhiwei Yin Xin Xia Xinqi Cai Xiaoxu Cao Long Chen Zhuo Chen Weihong Tan Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of BiologyCollege of Chemistry and Chemical EngineeringAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha 410082China Faculty of Science and Technology University of MacaoAvenida da UniversidadeTaipa 999078MacaoChina The Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital) Hangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhou 310022China Institute of Molecular Medicine(IMM) Renji HospitalShanghai Jiao Tong University School of Medicineand College of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

As Interface mediated self-assembly of nanocrystals provide excellent strategy for sensing,catalysis or photonics,the construction of innovative interfaces and development of versatile strategies for nanocrystal synthesis are urgently needed.Herein,latent fingerprints(LFPs),the most common markers for human identity,are used as naturally accessible interface for organization of graphene isolated nanocrystals(GINs).Excitingly,the selective adsorption of GINs on lipidic ridge provides a universal approach for the in-situ construction of the plasmonic arrays.Such system with intrinsic chrominance and Raman signal enables the high resolution colorimetric and surfaced-enhanced Raman spectroscopy(SERS)dual-mode imaging,which can detail the structures of the LFPs from 1st to 3rd level even the LFPs are shielded.Furthermore,the interface can be constructed on diverse materials by a simple finger-pressing process and the densely packed arrays can serve as superior SERS substrate for label-free,non-invasive acquisition of molecule information especially residues in LFPs.The combination of chemical composition with detailed structures efficiently recognizes the human identity and could help link it to a crime scene.Overall,the LFPs can act as natural platform for interface mediated localized assembly and personalized information acquisition for forensic science or precise medicine.

关键词： interface self-assembly latent fingerprint personalized information acquisition

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Plasmonic polydopamine-modified TiO_(2)nanotube substrates for surface-assisted laser desorption/ionization mass spectrometry imaging

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Nano Research 2023年第2期16卷 3028-3039页

作者： Dong Chen Mingyi Du Yudi Huang Yizhu Xu Yingying Chen Lianlian Ma Qingrong Xie Xinhai Zhu Zilong Chen Hanhong Xu Xinzhou Wu Zhibin Yin State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education South China Agricultural UniversityGuangzhou 510642China Agro-biological Gene Research Center Guangdong Academy of Agricultural SciencesGuangzhou 510640China Instrumental Analysis and Research Center Sun Yat-sen UniversityGuangzhou 510275China

Mass spectrometry imaging(MSI)has made the spatio-chemical characterization of a broad range of small-molecule metabolites within biological tissues possible.However,available matrix-assisted laser desorption/ionization mass spectrometry(MALDI-MS)suffers from severe background interferences in low-mass ranges and inhomogeneous matrix deposition.Thus,surface-assisted LDI-MS(SALDI-MS)has been an attractive alternative for high-sensitivity detection and imaging of small biomolecules.In this study,we construct a new composite substrate,hydrophobic polydopamine(hPDA)-modified TiO_(2)nanotube(TDNT)coated with plasmonic gold nanoparticle(AuNP-hPDA-TDNT),as a dual-polarity SALDI substrate using an easy and cost-effective fabrication approach.Benefitting from the synergistic effects of TDNT semiconductor and plasmonic PDA modification,this SALDI substrate exhibits superior performance for dual-polarity detection of a vast diversity of small molecules.Highly reduced background interferences,lower detection limits,and spot-to-spot repeatability can be achieved using AuNP-hPDA-TDNT substrates.Due to its unique imprinting performance,various metabolites and lipids can be visualized within jatropha integerrima petals,ginkgo leaves,strawberry fruits,and latent fingerprints.More valuably,the universality of this matrix-free substrate is demonstrated for mapping spatial distribution of lipids within mouse brain tissue sections.Considered together,this AuNP-hPDA-TDNT material is expected to be a promising SALDI substrate in various fields,especially in nanomaterial development and life sciences.

关键词： TiO_(2)nanotube surface-assisted laser desorption/ionization(SALDI) mass spectrometry imaging latent fingerprint tissue imaging

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Versatile core-shell magnetic fluorescent mesoporous microspheres for multilevel latent fingerprints magneto-optic information recognition

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InfoMat 2022年第5期4卷 152-163页

作者： Bingjie Yu Shude Liu Wenhe Xie Panpan Pan Peng Zhou Yidong Zou Qin Yue Yonghui Deng Department of Chemistry Department of Gastroenterology and HepatologyZhongshan HospitalState Key Laboratory of Molecular Engineering of PolymersShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghaiChina State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghaiChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduChina

latent fingerprints are extremely vital for personal identification and criminalinvestigation,and potential information recognition techniques have been widelyused in the fields of information and communication electronics.Although physicalpowder dusting methods have been frequently employed to develop latent fingerprintsand most of them are carried out by using single component powders ofmicron-sized fluorescent particles,magnetic powders,or metal particles,there isstill an enormous challenge in producing high-resolution image of latent fingerprintsat different backgrounds or substrates.Herein,a novel and effectivenanoimpregnation method is developed to synthesize bifunctional magnetic fluorescentmesoporous microspheres for latent fingerprints visualization by growthof mesoporous silica(mesoSiO_(2))on magical Fe_(3)O_(4) core and then deposition offluorescent YVO4:Eu^(3+)nanoparticles in the mesopores.The obtainedFe_(3)O_(4)@mesoSiO_(2)@YVO4:Eu^(3+)microspheres possess spatially isolated magneticcore and fluorescent shell which were insulated by mesoporous silica layer.Dueto their small particle size of submicrometer scale,high magnetization and lowmagnetic remanence as well as the combined magnetic and fluorescent properties,the microspheres show superior performance in visual latent fingerprint recognitionwith high contrast,high anti-interference,and sensitivity as well as goodretention on multifarious substrates regardless of surface permeability,roughness,refraction,colorfulness,and background fluorescence interference,and it makesthem ideal candidates for practical application in fingerprint visualization andeven magneto-optic information storage.

关键词： core-shell structure fluorescent materials latent fingerprint magnetic microspheres magneto-optic information recognition

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Blue light-induced rare-earth free phosphors for the highly sensitive and selective imaging of latent fingerprints based on enhanced hydrophobic interaction

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Journal of Materiomics 2022年第1期8卷 229-238页

作者： Di Peng Shengan He Yuyan Zhang Liqin Yao Wendong Nie Zhijian Liao Wenting Cai Xinyu Ye Key Laboratory of Forensic Science in Chongqing Colleges and Universities Criminal Investigation CollegeSouthwest University of Political Science and LawChongqing401120China School of Metallurgy and Chemistry Engineering Jiangxi University of Science and TechnologyGanzhou341000China National Engineering Research Center for Ionic Rare Earth Ganzhou341000China Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province Ganzhou341000China

The demand for in-situ detection of latent fingerprints(LFPs)in ways of high sensitivity,high selectivity,high contrast,low cost and user-friendly is still urgent.To overcome this challenge,a moisture-stable,red-emitting fluoride phosphor K_(3)AlF_(6):Mn^(4+)(KAF:Mn^(4+))with an organic hydrophobic skin was prepared.The phosphor has a uniform and superfine morphology with excellent luminescence properties.More importantly,this non-ultraviolet(UV)or non-near infrared(NIR)induced phosphor was proved to be an ideal fluorescent label for LFP imaging,which is both friendly for touch DNA analysis and compatible to forensic light sources.The well-defined ridge details with little background interference on various surfaces were presented by the oleic acid(OA)modified KAF:Mn^(4+)(KAF:Mn^(4+)-OA)phosphor in few seconds using the powder dusting method.To confirm the high selectivity of KAF:Mn^(4+)-OA for LFP imaging,an efficient quantitative evaluation method is proposed with the aid of ImageJ&Origin software.Due to the superiority of the Mn^(4+)-doped fluoride for the rapid imaging of LFPs in terms of lowcost,high compatibility and good availability,it is expected to be a promising candidate for forensic science as well as fluorescence imaging in other fields instead of rare earth luminescent materials.

关键词： Mn^(4+) Photoluminescence Hydrophobic interaction latent fingerprint Fluorescent label Forensic science

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Flux blended synthesis of novel Y2O3：Eu^3＋ sensing arrays for highly sensitive dual mode detection of LFPs on versatile surfaces

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Journal of Rare Earths 2018年第9期36卷 954-964页

作者： K.N. Venkatachalaiah H. Nagabhushana R.B. Basavaj G.R Darshan B. Daruka Prasad S.C. Sharma Department of Physics Amrito School of Engineering Amrito Vishwa Vidyapeethom Amrita University Bengoluru 560035 India Research and Development Center Bharathiar University Coimbatore 641046 India Prof. C.N.R. Rao Centre for Advanced Material Science Tumakuru University Tumakuru 572103 India Department of Physics Acharya Institute of Graduate Studies Bangalore 560107 India Department of Physics B.M.S. Institute of Technology and Management Visveswaraya Technological University affiliated Bangalore 560064 India Honorary Professor Department of Mechanical Engineering Jain University Advisor Jain Croup of Institutions Bangalore 560069 India

In the present communication,various fluxes blended Y2 O3：Eu3＋（5 mol%） nanopowders（NPs） were successfully fabricated by solution combustion method.PXRD pattern confirms body-centered cubic structure of the prepared samples.Energy band gap（Eg） of the fabricated products was estimated and is found to be in the range of 3.13-3.32 eV.Photoluminescence（PL） emission spectra exhibit sharp and intense peaks at ～579,592,614,657,704 nm corresponding to 5 D0→7 FJ（J = 0,1,2,3 and 4） transitions of Eu3＋ ions.Significance of fluxes for enhancing the PL emissions was extensively studied.Photometric studies of the prepared samples are located in pure red region.Optimized NPs were explored as a novel sensing agent for visualization of latent fingerprints（LFPs） on various surfaces including porous,semiporous and non-porous surfaces followed by powder dusting technique.Various experiments including aging,temperature,scratching and aquatic fresh water treatment tests were performed to evaluate applicability of the fabricated NPs.Visualized LFPs exhibit well defined ridge details including most authenticated sweat pores are also revealed with high sensitivity,selectivity,little background hindrance and less toxicity.Aforementioned results evidence that the method and fabricated NPs can be considered to be simple,rapid and economical and provide novel sensing platform for LFPs visualization in prospective forensic applications.

关键词： Fluxes Photoluminescence latent fingerprint Sweat pores Forensic applications Rare earths

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