Ana Maria Pires

Lattice engineering and data analysis as a dual-strategy to push cryogenic thermal sensing in single-band Eu3+ ratiometric thermometry

Leonardo F. Saraiva (24376565), Sergio A. M. Lima, Airton G. Bispo-Jr, Ana Maria Pires

Cutting-edge technologies, such as quantum computing and superconducting magnets, rely on cryogenic temperatures, a domain in which luminescence thermometry (LT) offers a viable route for sensing. Here, we extend single-band ratiometric (SBR) thermometry by combining ground- and excited-state absorption (GSA and ESA, …

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CCDC 2480173: Experimental Crystal Structure Determination

Ariane C. F. Beltrame, Rodolpho Alessandro Nesta Silva, Sergio Lima, Luciano Marchiò et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2480172: Experimental Crystal Structure Determination

Ariane C. F. Beltrame, Rodolpho Alessandro Nesta Silva, Sergio Lima, Luciano Marchiò et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

Luminescent Ir III –Au I Heterobimetallic Complex with a Carbene Bridging Ligand

Felipe S. M. Canisares, Mattia Di Niro, Ana Maria Pires, João Honorato et autres

Ir III –Au I luminescent bimetallic complexes have drawn growing interest for applications in photonics, catalysis, and biomedicine. Here, we report the synthesis of a new photoluminescent Ir III –Au I complex, the [(ppz) 2 Ir(μ-bbip)AuBr]PF 6, incorporating 1,3-dibenzyl-1H-imidazo[4,5- f ][1,10]phenanthrolin-3-ium bromide …

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Experimental and Theoretical Insights into the Structural Evolution and Photoluminescence of Eu3+-doped carbon dots

Bruno Seiki Domingos Onishi, Leonardo F. Saraiva, Valmor Roberto Mastelaro, Ana Maria Pires et autres

In this study, we explores the interconnection between the structure and photoluminescence (PL) properties of carbon dots doped with Eu3+. The nanomaterials were synthesized via a solvothermal method using citric acid and urea as precursors, and 2, 8, 14, 20, and 32 …

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Experimental and Theoretical Insights into the Structural Evolution and Photoluminescence of Eu3+-doped carbon dots

Bruno Seiki Domingos Onishi, Leonardo F. Saraiva, Valmor Roberto Mastelaro, Ana Maria Pires et autres

In this study, we explores the interconnection between the structure and photoluminescence (PL) properties of carbon dots doped with Eu3+. The nanomaterials were synthesized via a solvothermal method using citric acid and urea as precursors, and 2, 8, 14, 20, and 32 …

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Surprising Geometrical Properties of High-Dimension Low-Sample Size Data with Devastating Consequences for Data Analysis

Ana Maria Pires, Branco

The advent of modern technology, permitting the measurement of thousands of variables simultaneously, has given rise to floods of data characterized by many large or even huge datasets. This new paradigm presents extraordinary challenges to data analysis and the question arises: how …

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Castor oil and europium-based luminescent films for thermal sensing

Rodolpho A. N. Silva, Fernando E. Maturi, Gabriel L. Colombo, Bruno Seiki Domingos Onishi et autres

Luminescent thermometry has emerged as a powerful tool for remote temperature sensing, yet the development of sustainable materials that combine robust photophysical performance with environmental compatibility remains a challenge. Herein, we report a bio-derived luminescent thermometric film obtained by incorporating the europium-based …

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Lattice Engineering and Data Analysis as a Dual-Strategy to Push Cryogenic Thermal Sensing in Single-Band Lanthanide(III) Ratiometric Thermometry

Leonardo F. Saraiva, Sergio A. M. Lima, Airton Germano Bispo Junior, Ana Maria Pires

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A dual-mode magnetic–luminescent hybrid: Fe3O4 + Y2O3:Yb3+,Tm3+ decorated with a Eu3+β-diketonate complex

Clara Johanna Pacheco, Julieth Caro Patiño, A. M. Gomes, Flavia Artizzu et autres

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Sensitization of a europium complex by hydroxybenzoic acid and benzophenone: optical and solvatochromic insights

Alice B. Filipak, Maria Izabel Xavier Scapolan, Sofia Dias, Rodolpho Nesta Silva et autres

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Unfolding the Photophysical Behavior of Luminescent Polymeric Films Containing β‑Diketonate Tetrakis EuIII Complexes via Multilayer Quantum Mechanics

Leonardo F. Saraiva, Ariane C. F. Beltrame, Airton Germano Bispo Junior, Felipe S. M. Canisares et autres

Abstract The elucidation of the mechanisms governing the photophysical properties of trivalent lanthanide (LnIII) complexes embedded in polymeric matrices, such as poly­(methyl) methacrylate (PMMA) and polyvinylidene fluoride (PVDF), is challenging due to their intricate composite nature. Although theoretical modeling offers insights into …

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