Luminescence of lanthanide ions: an optical tool against counterfeiting

• Grant number: 21/06326-1
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2021
• End date: October 31, 2023
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Fernando Aparecido Sigoli
• Grantee: Fernando Aparecido Sigoli
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Security labels such as barcodes or QR codes have been used as anti-counterfeiting tools in passports, drivers' licenses, banknotes, and medicine packs. For such a proposal, luminescent materials invisible to naked eyes but revealed by near-UV radiation have been applied, mainly those based on lanthanide (Ln3+) complexes such as [Eu(tta)3phen] (tta = 2-tenoyltrifluoroacetonate; fen = 1,10- phenanthroline) due to their bright luminescence, narrow emission bands featuring high color purity, strong absorption within the near-UV spectral region and thermal and chemical stability. Yet, the dissemination of knowledge regarding this measurement ends up making it possible for security agents to be included or circumvented during the counterfeiting process. To overcome this issue, circularly polarized luminescence (CPL) appears as an alternative tool since replicating CPL, without advanced knowledge and methods of chiral chemistry, hinders the process of counterfeiting. CPL arises from chiral ligands excited with UV radiation for instance, while it can be easily detected by using photomultipliers adapted with manual polarizers or even adapted 3D glasses. Therefore, this proposal aims to investigate new chiral molecules and their use as ligands in Ln3+ complexes for application as anti-counterfeiting inks. The proposed chiral ligands are bis-oxazolines pyridines and bis-oxazolines pyrazines which will be combined with ²- diketone ligands known as efficient Ln3+ antennas to synthesize heteroleptic complexes combining large emission quantum yield and CPL. The chiral ligands may be used for UCNP surface modification leading to circularly polarized upconversion naoparticles (CP-UCNP) and also interacting them to lanthanide molecular cluster aggregates (MCA). (AU)

Scientific publications

(9)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE MORAIS, AMANDA JUSTINO; BISPO-JR, AIRTON GERMANO; FERREIRA, FLAVIA DE SOUSA; MAZALI, ITALO ODONE; SIGOLI, FERNANDO APARECIDO. Multi-emission processes of hierarchically structured NaGdF4:Tm:Yb:Tb core@shell nanoparticles. NEW JOURNAL OF CHEMISTRY, v. 47, n. 15, p. 8-pg., 2023-03-20. (20/02614-0, 21/08111-2, 21/06326-1)

BISPO-JR, AIRTON G.; GALICO, DIOGO A.; DIAZ-RODRIGUEZ, ROBERTO M.; OVENS, JEFFREY S.; SIGOLI, FERNANDO A.; MURUGESU, MURALEE. The role of terminal ligands in the slow relaxation of magnetisation and luminescence thermometry of dinuclear Nd-III complexes. INORGANIC CHEMISTRY FRONTIERS, v. 10, n. 13, p. 11-pg., 2023-06-06. (21/08111-2, 12/11382-9, 21/06326-1, 19/23763-6, 21/09755-0)

BISPO-JR, AIRTON GERMANO; MAZALI, ITALO ODONE; SIGOLI, FERNANDO APARECIDO. Single-center Ln(III) ratiometric luminescent temperature probes based on singlet -> singlet and singlet -> triplet sensitizations. JOURNAL OF MATERIALS CHEMISTRY C, v. 10, n. 38, p. 8-pg., 2022-08-15. (12/11382-9, 13/22127-2, 21/06326-1, 20/02614-0)

FREITAS, DANIEL CARNEIRO; MAZALI, ITALO ODONE; SIGOLI, FERNANDO APARECIDO; FRANCISCHINI, DANIELLE DA SILVA; ARRUDA, MARCO AURELIO ZEZZI. The microwave-assisted synthesis of silica nanoparticles and their applications in a soy plant culture. RSC ADVANCES, v. 13, n. 39, p. 9-pg., 2023-09-08. (19/24445-8, 19/00063-9, 14/50906-9, 14/50867-3, 19/00018-3, 21/06326-1, 18/25207-0, 20/08543-7)

SOUSA, GESIANE P.; DE BARROS, ANERISE; SHIMIZU, FLAVIO M.; SIGOLI, FERNANDO A.; MAZALI, ITALO O.. Plasmonic Photocatalysis Driven by Indirect Gold Excitation Via Upconversion Nanoparticle Emission Monitored In Situ by Surface- Enhanced Raman Spectroscopy. ACS APPLIED NANO MATERIALS, v. 6, n. 11, p. 13-pg., 2023-04-13. (14/50906-9, 21/06326-1, 22/02893-1)

BISPO-JR, AIRTON GERMANO; YEH, LAURENCE; ERRULAT, DYLAN; GALICO, DIOGO ALVES; SIGOLI, FERNANDO APARECIDO; MURUGESU, MURALEE. Improving the performance of & beta;-diketonate-based Dy-III single-molecule magnets displaying luminescence thermometry. CHEMICAL COMMUNICATIONS, v. 59, n. 56, p. 4-pg., 2023-06-16. (19/23763-6, 21/09755-0, 21/06326-1, 21/08111-2)

GALICO, DIOGO ALVES; MAZALI, ITALO ODONE; SIGOLI, FERNANDO APARECIDO. Bifunctional Temperature and Oxygen Dual Probe Based on Anthracene and Europium Complex Luminescence. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, v. 23, n. 23, p. 15-pg., 2022-12-01. (13/22127-2, 21/06326-1, 14/50906-9)

CALADO, CLAUDIA M. S.; MANALI, ISIS F.; DIOGENIS, ISABELA M. S.; COELHO, SERGIO F. N.; TEXEIRA, VERONICA C.; DE MESQUITA, BRUNO R.; OLIVEIRA, JOESLEI L.; SIGOLI, FERNANDO A.; REZENDE, MARCOS V. DOS S.. Defect disorder and optical spectroscopy study of Eu-doped NaYF4 and NaYGdF4 nanoparticles. Optical Materials, v. 137, p. 9-pg., 2023-01-31. (14/50906-9, 21/06326-1)

LIMA, DEBORAH A.; BISPO JR, AIRTON G.; GALICO, DIOGO A. .; COELHO, SERGIO F. N.; NETO, JOAO H. ARAUJO; ELLENA, JAVIER A.; PETIOTE, LANOUSSE; MAZALI, ITALO O.; SIGOLI, FERNANDO A. .. Tuning the Thermometric Features in 1D Luminescent EuIII and TbIII Coordination Polymers through Different Bridge Phosphine Oxide Ligands. Inorganic Chemistry, v. 62, n. 17, p. 9-pg., 2023-04-17. (21/04876-4, 20/02614-0, 21/08111-2, 17/08098-0, 21/06326-1)