Article
Chemistry, Physical
Yuanyuan Li, Xiaoyu Liu, Tianyuan Liang, Wenjie Liu, Jiyang Fan
Summary: The study shows that SiC quantum dots with small dimensions can naturally oxidize at a lower temperature to form core/shell and heteroepitaxial SiC/SiO2 quantum dots. The surface silica layer enhances the quantum efficiency by improving the carrier potential barrier and reducing the nonradiative transition rate, making it suitable for nanoscale electronic and photonic devices.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Kai Huang, Zhanjun Li, Yang Li, Nuo Yu, Xiuping Gao, Ling Huang, Shuang Fang Lim, Gang Han
Summary: This study introduces a simple thermolysis-mediated colloidal synthesis method for CaF2:DygNaYF(4) core-shell PLNPs, which enhances persistent luminescence. The well-matched crystal lattices between CaF2 and NaYF4 allow for precise control of compositions, shapes, and enhanced luminescence, overcoming current synthesis challenges for heterostructured PLNPs.
Article
Chemistry, Multidisciplinary
Zehao Zhou, Jian Zhao, Zhenghan Di, Bei Liu, Zhaohui Li, Xuemin Wu, Lele Li
Summary: A mesoporous MOF shell was synthesized on the surface of gold nanorods to capture single AuNRs for combinational phototherapy against solid tumors. The core-shell heterostructures combine a mesoporous structure and photoinduced singlet oxygen generation behavior with plasmonic photothermal conversion characteristic of AuNRs, enabling an efficient tumor treatment strategy. Applications beyond cancer therapy, such as plasmonic harvesting of light energy for catalytic reactions within MOFs and multifunctional nanocarriers for agricultural formulations, are also highlighted.
Article
Chemistry, Physical
Van-Tuan Hoang, Lemma Teshome Tufa, Jaebeom Lee, Mai Quan Doan, Nguyen Ha Anh, Van Tan Tran, Anh-Tuan Le
Summary: This study investigates the surface-enhanced Raman spectroscopy (SERS) performance of Ag@Fe3O4 core-shell nanoparticles with different sizes. The smallest nanoparticles with thin shell and high shell porosity exhibit significantly improved mass diffusion and SERS performance, making them ideal substrates for highly sensitive detection of organic pollutants. Quantitative SERS measurements using the Ag@Fe3O4 nanoparticles were successfully demonstrated with methylene blue (MB) as probe analytes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Wei Zhang, Kaikai Wang, Yufeng Zeng, Xiaodan Hu, Xiaohong Zhang, Shuquan Chang, Haiqian Zhang
Summary: Low-diffusion Fricke gel dosimeters with a core-shell structure were successfully constructed using microdroplet ultrarapid freezing and coating technology, achieving a concentration gradient of ferric ions and preventing diffusion after irradiation. Monte Carlo calculations showed that the hydrophobic PDMS coating had minimal impact on the dosimeter's performance.
Article
Multidisciplinary Sciences
Fernando Arteaga Cardona, Noopur Jain, Radian Popescu, Dmitry Busko, Eduard Madirov, Bernardo A. A. Arus, Dagmar Gerthsen, Annick De Backer, Sara Bals, Oliver T. T. Bruns, Andriy Chmyrov, Sandra Van Aert, Bryce S. S. Richards, Damien Hudry
Summary: Short-wave infrared (SWIR) fluorescence has the potential to become the new gold standard in optical imaging for biomedical applications due to advantages such as lack of autofluorescence, weak photon absorption, and reduced photon scattering. However, the lack of bright and biocompatible probes is a challenge. This study demonstrates the growth of homogeneous or heterogeneous shell domains on optically-active α-NaYF4:Yb:Er core nanocrystals and the control of atomic scale organization to improve the emission properties.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Mingzhen Hu, Zengjian Cai, Shitu Yang, Zhe Wang, Fengyi Shen, Xinhu Liang, Guodong Sun, Hao Ren, Yanan Cao, Botao Hu, Shoujie Liu, Haiyan Tan, Kebin Zhou
Summary: Due to the surface inhomogeneity, it is challenging to directly grow uniform bimetallic nanoparticles (NPs) on solid supports with controllable structure and size. In this study, a surface-confinement strategy was utilized to prepare ultrafine bimetallic Pt-M NPs (M(sic)Fe, Cu, and Co) with core-shell or intermetallic compounds structure on an N functionalized carbon support (NC). The N species on NC support can disperse metal cations, facilitating uniform nucleation and growth of bimetallic NPs. Moreover, N-mediation confines metal transfer to a narrow region on NC, resulting in localized particle growth and formation of ultrafine bimetallic NPs. The Pt3Fe NPs on NC exhibited excellent catalytic activity and durability for electrochemical hydrogen evolution reaction.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Cong Cao, Guangshen Li, Yu Xie, Chang Hong, Yu Li
Summary: The article highlights the advantages of lanthanide doped nanoparticles in NIR-II imaging and proposes a potential new imaging probe. Experimental results have shown that the nanoparticles exhibit promising performance in in vivo imaging.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xin Zhang, Xueyan Jia, Rui Xu, Xinyu Lu, Haixiong Liu, Yongan Niu
Summary: In this study, ellipsoidal α-Fe2O3@SnO2/Ti3C2 MXene core-shell nanoparticles were successfully prepared and used for the photodegradation of rhodamine B dye. The as-prepared samples showed excellent photodegradation capacity and cycle stability. The proposed photocatalytic mechanism highlighted the role of Ti3C2 MXene and SnO2 in improving the photocatalytic efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Fatma Unal, Cansu Tasar, Batur Ercan
Summary: By synthesizing antibacterial magneto-luminescent 58S bioactive glasses, which possess magnetic and luminescent properties, this study showed that they can effectively target and localize at the infection foci without dispersing into the body. The Eu doped SPION/Bioactive glass nanoparticles exhibited increased osteoblast viability and inhibited bacterial growth, while possessing superparamagnetic properties and exhibiting red luminescence.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Francesca Corsini, Elisavet Tatsi, Alessia Colombo, Claudia Dragonetti, Chiara Botta, Stefano Turri, Gianmarco Griffini
Summary: The study synthesized highly luminescent and photostable core-shell nanostructured luminescent species for use in LSC devices, demonstrating superior optical response and excellent photostability. The nanoparticles displayed markedly improved photoluminescence quantum yield and high internal photon efficiency, showcasing their potential for efficient and stable application in the field of photovoltaics.
Article
Chemistry, Physical
Huiming Liu, Long Yan, Jinshu Huang, Zhengce An, Wang Sheng, Bo Zhou
Summary: This study reports a new nanoplatform for improving the thermal sensitivity of nanothermometry through nonthermally coupled upconversion emissions. By observing the gradual decrease of Er3+ and rapid increase of Tm3+, a significant contrast in intensity ratio and emission colors can be achieved. Introducing Ce3+ further enhances the sensitivity and expands the range of thermochromic color change.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Acoustics
Si-Si Shen, Jie Yao, Wei-Xuan Zhang, Da-Jian Wu
Summary: A complete model in the frequency domain is developed to analyze the photoacoustic (PA) response of core-shell particles. The study reveals that core-shell particles exhibit pronounced resonant modes, which vary with the thickness of the shell and the radius of the core. The structure can be monitored by analyzing the PA signals.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Xiaoyu Xie, Wang Wang, Haoran Chen, Run Yang, Han Wu, Dechao Gan, Bin Li, Xianggui Kong, Qiqing Li, Yulei Chang
Summary: Lanthanide-doped upconversion nanoparticles (UCNPs) with Yb3+ and Er3+ codoping and CaF2 shell were synthesized. Compared with homogeneous shell UCNPs, these heterogeneous core@shell UCNPs exhibited stronger upconversion luminescence. The UCNPs with CaF2 shells showed higher sensitivity to temperature in the range of 200-300 K, with a maximum thermal sensitivity of 2.2% K-1.
Article
Chemistry, Multidisciplinary
Lu Zheng, Xinyi Huang, Jiuping Zhong, Zijun Wang, Xiaoning Cheng
Summary: This study investigated the effects of a SiO2 shell coating on the optical properties and thermal sensitivity of core-shell UCNPs, revealing that the SiO2 coating can significantly enhance the temperature sensitivity. The research also found that analyzing the fluorescence intensity ratio of non-thermally coupled levels can lead to even higher temperature sensitivity in certain conditions.
Article
Chemistry, Multidisciplinary
Brunella Bardi, Anna Painelli, Monica Panigati, Pierluigi Mercandelli, Francesca Terenziani
Summary: A computational study has rationalized the different phosphorescence colors of two highly emitting crystal polymorphs of a dinuclear Re(I) complex. The electrostatic interactions between the charge distributions on neighboring molecules inside the crystal are responsible for the different stabilization of the emitting triplet state due to the different molecular packing. These self-consistent effects play a major role in the phosphorescence of crystals made of polar and polarizable molecular units, offering a powerful handle to tune the luminescence wavelength in the solid state through supramolecular engineering.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Andrea Delledonne, Martina Orlandini, Paolo P. Mazzeo, Cristina Sissa, Alessia Bacchi, Francesca Terenziani, Paolo Pelagatti
Summary: A series of new extended linkers containing various polyaromatic chromophores were synthesized through Pd-catalyzed cross-coupling reactions. These linkers exhibited fluorescence in the solid state, making them suitable for the fabrication of fluorescent MOFs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Greta Cavazzini, Francesco Cugini, Francesco Puglielli, Simone Fabbrici, Davide Delmonte, Giovanna Trevisi, Lucia Nasi, Lara Righi, Semih Ener, Lukas Pfeuffer, David Koch, Oliver Gutfleisch, Franca Albertini, Massimo Solzi
Summary: Microparticles of Ni45.7Mn36.6In13.5Co4.2 were prepared using different grinding methods and annealing treatments were applied to recover the original martensitic transition and magnetic properties. The particle size was significantly reduced after milling and the morphology, crystal structure, and magnetic properties were strongly influenced by milling temperature, time, and medium. High-temperature annealing treatments could recover both magnetic and magneto-structural phase transitions. The study highlights the importance of microstructural features, atomic order, and chemical homogeneity in determining the magneto-structural properties of the NiMnInCo compound.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Gabriele De Luca, Jonathan Spring, Moloud Kaviani, Simon Johr, Marco Campanini, Anna Zakharova, Charles Guillemard, Javier Herrero-Martin, Rolf Erni, Cinthia Piamonteze, Marta D. Rossell, Ulrich Aschauer, Marta Gibert
Summary: By designing an intermediate layer on the interface, remote control of charge transfer and restoration of the magnetic properties of films can be achieved. The study focused on the grown model of La2NiMnO6 (LNMO) thin films on perovskite oxide substrates and found that the introduction of an intermediate layer can redistribute the electron excess and restore the ferromagnetic properties of the ultrathin LNMO films.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Chiara Coppi, Francesco Cugini, Giacomo Magnani, Chiara Milanese, Lucia Nasi, Laura Lazzarini, Daniele Pontiroli, Mauro Ricco, Massimo Solzi
Summary: In this study, a simple, versatile, and cost-effective method is presented to fabricate thermal conductive magnetocaloric composites. These composites overcome the thermal and mechanical limits of current magnetocaloric materials and show a significant improvement in response time, making them highly useful for energy conversion in thermomagnetic devices.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Multidisciplinary Sciences
Ji Soo Lim, Ho-Hyun Nahm, Marco Campanini, Jounghee Lee, Yong-Jin Kim, Heung-Sik Park, Jeonghun Suh, Jun Jung, Yongsoo Yang, Tae Yeong Koo, Marta D. Rossell, Yong-Hyun Kim, Chan-Ho Yang
Summary: This study demonstrates a lowered activation energy associated with oxygen transport at a compositional phase transition point in Ca-doped bismuth ferrite films.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jonathan Filippi, Hamish A. Miller, Lucia Nasi, Maria V. Pagliaro, Andrea Marchionni, Michele Melchionna, Paolo Fornasiero, Francesco Vizza
Summary: This study investigates the performance of a Cobalt@N-doped graphitic carbon core-shell nanohybrid electrocatalyst in a complete cell, and by optimizing the flow rate and potential, it can efficiently produce H2O2 with a high concentration of up to 1 wt%.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Physical
Michele Melchionna, Miriam Moro, Simone Adorinni, Lucia Nasi, Sara Colussi, Lorenzo Poggini, Silvia Marchesan, Giovanni Valenti, Francesco Paolucci, Maurizio Prato, Paolo Fornasiero
Summary: Integrating graphene oxide (GO) into nanostructured Bi2O3 electrocatalysts for CO2 reduction (CO2RR) improves performance toward formic acid production, with different structures potentially resulting in varied electrocatalytic behavior.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
K. Swathi, Meleppatt Sujith, P. S. Divya, P. Merin Varghese, Andrea Delledonne, D. K. Andrea Phan Huu, Francesco Di Maiolo, Francesca Terenziani, Andrea Lapini, Anna Painelli, Cristina Sissa, K. George Thomas
Summary: The phenomenon of excited-state symmetry breaking is often observed in multipolar molecular systems, significantly affecting their photophysical and charge separation behavior. In this study, the intrinsic factors regulating excited-state symmetry breaking in multibranched systems are explored using a combination of experimental and theoretical investigation. It is found that the large Stokes shifts observed in highly symmetric phenyleneethynylenes can be explained by the presence of low-lying dark states, as confirmed by two-photon absorption measurements and TDDFT calculations. In addition, an intense fluorescence emission is observed in these systems contrary to Kasha's rule, and this behavior is explained by a novel phenomenon called symmetry swapping, which describes the inversion of the energy order of excited states as a result of symmetry breaking.
Article
Chemistry, Multidisciplinary
Brunella Bardi, Katerina V. Vygranenko, Beata Koszarna, Olena Vakuliuk, Lukasz Dobrzycki, Daniel T. Gryko, Francesca Terenziani, Anna Painelli
Summary: A new method has been developed to prepare merocyanines, including rhodols, from readily available tetrafluorohydroxybenzaldehyde and aminophenols. This method enables the synthesis of merocyanines with three fluorine atoms and additional conjugated rings under neutral, mild conditions. The transformation of the rhodol chromophore into π-expanded merocyanines allows for the modulation of photophysical properties, such as shifting absorption and emission bands across the visible spectrum, achieving a large Stokes shift, high brightness, strong two-photon absorption, and solvatofluorochromism. Detailed investigation provides insights into the different spectroscopic behavior of rhodols and new merocyanines, including solvatochromism and two-photon absorption.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Francesco Bertocchi, Andrea Delledonne, Guillem Vargas-Nadal, Francesca Terenziani, Anna Painelli, Cristina Sissa
Summary: Aggregates of cyanine dyes are investigated for their tunable spectral properties in this study. The study presents a joint experimental and theoretical analysis of different types of aggregates formed by a family of cyanine dyes. The analysis rationalizes the optical spectra using an essential-state model that takes into account intermolecular interactions, molecular polarizability, and vibronic coupling.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Food Science & Technology
Francesca Accardo, Barbara Prandi, Francesca Terenziani, Tullia Tedeschi, Stefano Sforza
Summary: Flavonoids in cocoa and derived products can interact with proteins, but this interaction does not affect protein bioaccessibility and digestibility during digestion. The interaction between whey proteins and catechins was evaluated in a model system and commercial milk chocolate. The solubilization, hydrolysis, and peptide profile of proteins were determined using in vitro digestion methods. The slight interaction between flavonoids and proteins did not hinder protein digestion and solubilization. The digestibility of proteins in milk chocolate was found to be complete.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Andrea Delledonne, Martina Orlandini, Francesca Terenziani, Paolo Pio Mazzeo, Alessia Bacchi, Lucia Carlucci, Angiolina Comotti, Jacopo Perego, Paolo Pelagatti
Summary: Three new microporous mixed-ligand MOFs (PUM310, PUM310Me(2), and PUM310CO) were synthesized through solvothermal reactions between bis-pyridine-bis-amide ligands and 2,6-naphthalenedicarboxylic acid. The structural characterization revealed polycatenated frameworks with truncated Zn-paddle wheels, and solvent removal resulted in framework rearrangement and shrinkage. The MOFs exhibited fluorescence in the solid state, and the optical spectra indicated efficient Forster resonance energy transfer (FRET) between the ndca(2-) donor and bis-pyridine acceptors, particularly in PUM310CO.
Article
Chemistry, Physical
Nerea Gonzalez-Pato, Davide Blasi, Domna M. Nikolaidou, Francesco Bertocchi, Jesus Cerda, Francesca Terenziani, Nora Ventosa, Juan Arago, Andrea Lapini, Jaume Veciana, Imma Ratera
Summary: This article reports the preparation and characterization of organic nanoparticles doped with polychlorinated trityl radicals as nanothermometers for temperature sensing. The nanoparticles show excellent thermal sensitivity and have the potential to be used as nanothermometers in bio applications.
Meeting Abstract
Clinical Neurology
M. Martin Jauvain, N. Lucia, T. Mehdi, L. Clemence, H. Marie-Odile, P. Dimitri, B. Cristina
EUROPEAN JOURNAL OF NEUROLOGY
(2022)
