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Ding J, Liao L, Shuai P, Guo Q, Mei L. Controlling the Fluorescence Behavior of Hydrophobic Pigments by Supramolecular Self-Assembling on Organic Layered Silicate Minerals. Inorg Chem 2023; 62:19070-19079. [PMID: 37939251 DOI: 10.1021/acs.inorgchem.3c03130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
This research focused on the supramolecular self-assembly of organic fluorescent molecules on organically modified layered silicate minerals to design and prepare layered nanocomposites with excellent fluorescence properties. Aromatic hydrocarbons are hydrophobic and poorly loaded on the hydrophilic surface of layered silicate minerals, but they are easily captured by an organically modified mineral surface. Montmorillonite (MMT) and saponite (SAP), typical 2:1 type layered silicate minerals with different octahedral cations, were modified with the cationic surfactant octadecyl trimethylammonium chloride (OTAC) and loaded with pyrene (an aromatic hydrocarbon dye) with different molar ratios to the cationic surfactant by supramolecular self-assembling to construct fluorescent nanocomposites. The effect of pyrene concentration and the octahedral cation of the 2:1 type layered silicate minerals on photoluminescence properties was investigated. The fluorescence spectra of the nanocomposites prepared under low pyrene concentrations showed two bands at around 400 and 470 nm, corresponding to the monomer and excimer emissions; the band intensity of the excimer shoots up with the increase of pyrene concentration, reflecting different contributions from monomer and dimer species and the formation of radical aggregates. The excellent heat resistance of the layered silicate structure can effectively protect pyrene molecules from external environmental influences.
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Affiliation(s)
- Junjie Ding
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Libing Liao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Pengfei Shuai
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Qingfeng Guo
- School of Gemology, China University of Geosciences, Beijing 100083, China
| | - Lefu Mei
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
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Dinake P, Phokedi GN, Mokgadi J, Ntshekisang A, Botlhomilwe MA, Kelebemang R, Motswetla O, Present B. A Facile Microwave-Assisted Green Synthetic Approach of Solid-State Fluorescent Carbon-Dot Nanopowders Derived from Biowaste for Potential Latent-Fingerprint Enhancement. INTERNATIONAL JOURNAL OF NANOSCIENCE 2022. [DOI: 10.1142/s0219581x21500514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Latent fingerprint detection and visualization remains a challenge especially where problems of poor contrast, auto-fluorescent surfaces and patterned backgrounds are encountered. As a result there is an increasing interest in the development of simple, cost effective, rapid and yet accurate methods for latent fingerprint detection and recovery. Herein, this paper reports the synthesis of bright blue photoluminescent carbon dots (C-dots) via an eco-friendly and simple one-step microwave-assisted carbonization of potato peels’ biomass. The C-dots were prepared in only 3 min and ground into powder and used without any further treatment. The as-prepared C-dots were characterized using atomic force microscope, Fourier transform infra-red spectroscopy and X-ray diffraction with an average size of 1.0[Formula: see text]nm. The optical properties of the as-prepared C-dots were studied by UV-Vis spectroscopy and spectrofluorometer which established an excitation and emission wavelengths of 390[Formula: see text]nm and 480[Formula: see text]nm, respectively. Owing to their strong solid state fluorescence, the as-prepared C-dots’ powder was successfully used in latent fingerprint detection and imaging on porous and nonporous surfaces. Latent fingerprints were recovered with high resolution and excellent quality providing sufficient details for individual identification. These findings demonstrate that C-dots derived from biomass have a great potential in latent fingerprint analysis for forensic applications.
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Affiliation(s)
- Pogisego Dinake
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Gothatamang Norma Phokedi
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Janes Mokgadi
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
- Chemical, Biological, Nuclear and Radiological Weapons Management Authority, Ministry of Defence, Justice and Security, Private Bag 00384, Gaborone, Botswana
| | - Anthony Ntshekisang
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Mmamiki Ayanda Botlhomilwe
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Rosemary Kelebemang
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
- National Environmental Laboratory, Department of Waste Management and Pollution Control, Plot Number 20576, Extension 16, Magochanyama Road, Private Bag BO 323 Gaborone, Botswana
| | - Obakeng Motswetla
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Bokang Present
- Department of Physics and Astronomy, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
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Hauser JR, Bergström ET, Kulak AN, Warriner SL, Thomas-Oates J, Bon RS. Pyrene Tags for the Detection of Carbohydrates by Label-Assisted Laser Desorption/Ionisation Mass Spectrometry*. Chembiochem 2021; 22:1430-1439. [PMID: 33296552 DOI: 10.1002/cbic.202000721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/08/2020] [Indexed: 12/15/2022]
Abstract
Matrix-assisted laser desorption/ionisation mass spectrometry (MALDI-MS) is widely used for the analysis of biomolecules. Label-assisted laser desorption/ionisation mass spectrometry (LALDI-MS) is a matrix-free variant of MALDI-MS, in which only analytes covalently attached to a laser desorption/ionisation (LDI) enhancer are detected. LALDI-MS has shown promise in overcoming the limitations of MALDI-MS in terms of sample preparation and MS analysis. In this work, we have developed a series of pyrene-based LDI reagents (LALDI tags) that can be used for labelling and LALDI-MS analysis of reducing carbohydrates from complex (biological) samples without the need for additional chemical derivatisation or purification. We have systematically explored the suitability of four pyrene-based LDI enhancers and three aldehyde-reactive handles, optimised sample preparation, and demonstrated the use of LALDI tags for the detection of lactose. We have also exemplified the potential of LALDI tags for labelling carbohydrates in biological samples by direct detection of lactose in cow's milk. These results demonstrate that LALDI-MS is a promising technique for the analysis of reducing carbohydrates in biological samples, and pave the way for the development of LALDI-MS for glycomics and diagnostics.
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Affiliation(s)
- Jacob R Hauser
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Edmund T Bergström
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.,Centre of Excellence in Mass Spectrometry, University of York, Heslington, York, YO10 5DD, UK
| | - Alexander N Kulak
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Stuart L Warriner
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Jane Thomas-Oates
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.,Centre of Excellence in Mass Spectrometry, University of York, Heslington, York, YO10 5DD, UK
| | - Robin S Bon
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, LIGHT Laboratories, University of Leeds, Leeds, LS2 9JT, UK
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Bécue A, Eldridge H, Champod C. Interpol review of fingermarks and other body impressions 2016-2019. Forensic Sci Int Synerg 2020; 2:442-480. [PMID: 33385142 PMCID: PMC7770454 DOI: 10.1016/j.fsisyn.2020.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/16/2020] [Indexed: 12/17/2022]
Abstract
This review paper covers the forensic-relevant literature in fingerprint and bodily impression sciences from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20 Review%20 Papers%202019. pdf.
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Affiliation(s)
- Andy Bécue
- École des Sciences Criminelles, Faculté de Droit, des Sciences criminelles et d’Administration publique, Quartier Sorge, Building Batochime, University of Lausanne, CH-1015, Lausanne, Dorigny, Switzerland
| | - Heidi Eldridge
- École des Sciences Criminelles, Faculté de Droit, des Sciences criminelles et d’Administration publique, Quartier Sorge, Building Batochime, University of Lausanne, CH-1015, Lausanne, Dorigny, Switzerland
| | - Christophe Champod
- École des Sciences Criminelles, Faculté de Droit, des Sciences criminelles et d’Administration publique, Quartier Sorge, Building Batochime, University of Lausanne, CH-1015, Lausanne, Dorigny, Switzerland
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Volatilised pyrene: A phase 1 study demonstrating a new method of visualising fingermarks with comparisons to iodine fuming. Forensic Sci Int 2019; 305:109996. [PMID: 31678827 DOI: 10.1016/j.forsciint.2019.109996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/03/2019] [Accepted: 10/14/2019] [Indexed: 11/21/2022]
Abstract
Pyrene is a fluorescent polycyclic aromatic hydrocarbon that can be volatilised under mild conditions. When fumed, pyrene is rapidly absorbed into the sebaceous residues of fingermarks, enabling their fluorescent visualisation upon excitation with ultraviolet radiation. This new means of fluorescent fingermark detection is more sensitive than the non-fluorescent iodine fuming approach for nonporous surfaces. This is demonstrated here in a phase 1 study using split-print comparisons on metal and glass surfaces. Pyrene-treated fingermarks also retain the volatile fluorophore for comparably long time periods relative to iodine fuming (in the order of hours). The phase 1 study comprised four donors, and 80 natural fingermarks that were grouped into two time periods; aged 24h and 1 week. Iodine fuming was chosen as a reference to showcase the effectiveness of pyrene given it is the most closely-related chemical fuming method in routine use. This study demonstrates that pyrene fuming increases the quantity and quality of fingermark visualisations relative to iodine fuming, and is free of many of the latter method's drawbacks. Preliminary results shown here also show the effectiveness of pyrene fuming on highly patterned surfaces, and its compatibility with the use of gelatine lifters. Pyrene fuming is thus easy to effect, low-cost, and shows great promise as a new means of visualising fingermarks on non-porous surfaces.
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Kumari Sharma K, Kannikanti GH, Baggi TRR, Vaidya JR. Fixing Transient Iodine on Developed Latent Fingermarks. J Forensic Sci 2019; 64:1859-1866. [DOI: 10.1111/1556-4029.14139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Kirti Kumari Sharma
- Fluoro and Agrochemicals Division CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
- AcSIR‐IICT CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
| | - Gavash Harsha Kannikanti
- Fluoro and Agrochemicals Division CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
- AcSIR‐IICT CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
| | | | - Jayathirtha Rao Vaidya
- Fluoro and Agrochemicals Division CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
- AcSIR‐IICT CSIR‐Indian Institute of Chemical Technology Uppal Road Tarnaka Hyderabad 500007 India
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