Article
Chemistry, Multidisciplinary
Naoya Haraguchi, Naoki Ogiwara, Yoshitaka Kumabe, Soichi Kikkawa, Seiji Yamazoe, Takashi Tachikawa, Sayaka Uchida
Summary: Size-controlled Ag clusters with specific colors were synthesized using porous ionic crystals (PICs) as scaffolds and redox-active polyoxometalates (POMs) as electron sources. The cluster size and color emission were controlled by the reduction time and types of ions or elements in the PICs. This method provides a convenient way to obtain ligand-free Ag clusters with high yields and stability.
Article
Materials Science, Multidisciplinary
Philip Nathaniel Immanuel, Chao-Ching Chiang, Tien-Hsi Lee, Sikkanthar Diwan Midyeen, Song-Jeng Huang
Summary: The study investigates the use of high-power He-Cd laser irradiation for electrochemical etching on p-type silicon in hydrofluoric acid solution, successfully controlling the formation of nano porous silicon (NPS). By analyzing and controlling laser power and wavelength, the NPS formation was achieved, leading to potential practical applications in microelectronic devices.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Alexander C. Marwitz, Aaron D. Nicholas, Rajani Thapa Magar, Anuj K. Dutta, Joel Swanson, Tyler Hartman, Jeffery A. Bertke, Jeffrey J. Rack, Luiz G. Jacobsohn, Karah E. Knope
Summary: Five bismuth(iii)-organic phases consisting of supramolecular assemblies of Bi-2,6-pyridinedicarboxylate and substituted phenanthroline molecules were synthesized. These compounds exhibited solid-state photoluminescence, with phosphorescence originating from the substituted phenanthroline units and fluorescence arising from the coordinated pyridinedicarboxylate ligands. Bismuth induced spin-orbit coupling, resulting in phosphorescence, and acted as a heavy metal attenuator for X-ray luminescence. Computational findings suggested favorable conditions for triplet energy transfer from donor Bi(iii)-organic units to acceptor phenanthroline derivatives. This study provides valuable insights into the structure-property relationships of luminescent bismuth-organic compounds and highlights the role of noncovalent interactions in achieving room temperature phosphorescence and radioluminescence.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Ayan Bhattacharyya, Suman De Sarkar, Anindita Das
Summary: Visible-light-mediated photoredox catalysis has been developed as an efficient alternative to conventional organic synthesis, with researchers now incorporating supramolecular chemistry techniques to customize traditional catalysts and expand their scope through noncovalent interactions. The use of supramolecular engineering has led to improved efficiency in known chemical reactions and the development of advanced synthetic methodologies. Additionally, self-assembly strategies within confined nanospaces have been shown to impact photocatalytic reactions.
Article
Chemistry, Multidisciplinary
Rebecca L. Spicer, Helen M. O'Connor, Yael Ben-Tal, Hang Zhou, Patrick J. Boaler, Fraser C. Milne, Euan K. Brechin, Guy. C. Lloyd-Jones, Paul J. Lusby
Summary: Coordination cage catalysis is a strategy that utilizes a cage as an exogenous catalyst, rather than relying on the endogenous binding of substrates. The cage alters the properties of a cofactor guest, which then transfers reactivity to the bulk-phase to catalyze reactions.
Article
Chemistry, Multidisciplinary
Shakkeeb Thazhathethil, Tatsuya Muramatsu, Nobuyuki Tamaoki, Christoph Weder, Yoshimitsu Sagara
Summary: This study reports a cyclophane-based supramolecular mechanophore that can indicate mechanical events through changes in its photophysical properties. The mechanophore exhibits orange emission in the absence of force, but mechanical deformation results in a change in emission color and intensity that correlates with the applied stress.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Josefine Meurer, Julian Hniopek, Thomas Baetz, Stefan Zechel, Marcel Enke, Juergen Vitz, Michael Schmitt, Juergen Popp, Martin D. Hager, Ulrich S. Schubert
Summary: A new shape-memory polymer is presented, utilizing two different metal complexes to achieve high strain fixity rates and strain recovery rates, with the mechanism revealed through various techniques such as Raman spectroscopy.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Wu-Ji Wei, Ying Mu, Li Wei, Ji-Xiang Hu, Guo-Ming Wang
Summary: This study synthesized two new photochromic chain complexes through self-assembly, achieving reversible room-temperature fluorescence and phosphorescence switching by light irradiation and thermal treatment. The electron transfer photochromic behavior and generated stable radicals were found to play a key role in this process.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Kui Xu, Xiaoji Xie, Li-Min Zheng
Summary: This review provides the latest advances in Ir-Ln complexes. The combination of Ir complexes and lanthanide ions in Ir-Ln complexes overcomes the limitations of lanthanide ions and enables the development of new multifunctional complexes for various applications.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Felix Glaser, Matthias Schmitz, Christoph Kerzig
Summary: Sensitized triplet-triplet annihilation upconversion is a method that converts high-energy photons into two lower-energy photons using a combination of a sensitizer and an annihilator. By adding a charge-adapted mediator, the energy transfer efficiency can be significantly improved at low annihilator concentrations. This approach increases the upconversion quantum yield and reduces intrinsic filter effects, making it suitable for photocatalysis applications.
Article
Chemistry, Multidisciplinary
Han Li, Oliver S. Wenger
Summary: Our study demonstrates the concept that single excitation of the two-electron reduced forms of perylene diimides (PDIs) with green photons can produce excited states with similar or greater reducing power than the shorter-lived excited states of PDI radical monoanions. By performing multi-electron reduction of a photocatalyst with a sacrificial reagent before irradiation with low-energy photons, we can generate highly reactive excited states for photocatalytic reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Shinnosuke Horiuchi, Keisuke Umakoshi
Summary: This review summarizes the progress in developing two types of unique luminescent supramolecular systems, including heteronuclear complexes involving heterometallic metal-metal interactions and host-guest systems consisting of mononuclear metal complexes and a hydrogen-bonded capsule.
Article
Engineering, Environmental
Xiaodan Tang, Shuanglong Ma, Shengjun Xu, Qiuyun Yang, Yan Huang, Jingzhen Wang, Dangling Hua
Summary: Metal-free porous carbonaceous materials (PCM) synthesized via different pretreatment strategies have shown varying effectiveness in peroxydisulfate (PDS) activation. Among the different methods tested, ball milling (BM) was found to be the most efficient for PCM synthesis. The activation efficiency was found to be positively correlated with the defective degree and C=O content in PCM. Mechanism studies using electrochemical methods and in situ Raman technology revealed that metastable intermediates with a higher redox potential were the primary oxidant, while radicals acted as secondary oxidants. This study provides a deeper understanding of the electron transfer pathways in PDS activation for organic degradation by PCM.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tianqi Li, Xiang Li, Jiaming Yang, Haoxiang Sun, Junqi Sun
Summary: In this study, stretchable ionic conductors with extremely low hysteresis and healability were successfully fabricated through a complexation process. The resulting ionic conductors exhibited low energy dissipation, high mechanical strength, and toughness, and maintained stable electrical response under a wide range of strains. They could also be conveniently healed to restore their original properties.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Junqi Ge, Jiangbo Guo, Xudong Yu, Yajuan Li, Zichuan Ma
Summary: A novel dendrimer gelator BisDEC was synthesized via Glaser coupling reaction, showing distinct properties compared to DEC in different gelation solvents, including self-healing, self-supporting, and grinding chromism abilities.
Review
Chemistry, Multidisciplinary
Joana Kraemer, Rui Kang, Laura M. Grimm, Luisa De Cola, Pierre Picchetti, Frank Biedermann
Summary: Combining synthetic molecular probes, chemosensors, and nanosensors with innovative assay protocols can lead to the development of robust, low-cost, and fast-responding sensors applicable in biofluids. This review focuses on the development of sensors for metabolites, neurotransmitters, drugs, and inorganic ions, and the monitoring and analysis of metabolic and signaling networks in cells and organisms. The review highlights the potential applications of sensing systems that provide optical signals through dynamic covalent chemistry, supramolecular host-guest interactions, or plasmonic effects, and also encourages the development of more advanced systems.
Article
Chemistry, Multidisciplinary
Andrea Mosseri, Maria Sancho-Albero, Marilisa Leone, Donatella Nava, Francesco Secundo, Daniela Maggioni, Luisa De Cola, Alessandra Romanelli
Summary: This study reports the formation of homogeneous chiral fibers through self-assembly of peptide nucleic acids. Nucleobases play a key role in determining the morphology and chirality of the fibers. By spectroscopic characterization and microscopy studies, a structural model consistent with the experimental evidence was obtained.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Conor McCartin, Eric Mathieu, Monique Dontenwill, Christel Herold-Mende, Ahmed Idbaih, Anna Bonfiglio, Matteo Mauro, Sylvie Fournel, Antoine Kichler
Summary: Cancer stem cells (CSCs) are highly resistant to conventional anti-cancer treatments due to their unique characteristics, but their high dependence on mitochondria can be targeted for new therapeutic agents. This study found that a phosphorescent compound showed higher activity against CSCs compared to non-CSCs, with mitochondrial localization and superoxide production confirmed. The findings provide important insights into the potential of this compound for anti-CSC therapeutics.
CHEMICO-BIOLOGICAL INTERACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Elise Jouaiti, Valerio Giuso, Damien Cianfarani, Nathalie Kyritsakas, Christophe Gourlaouen, Matteo Mauro
Summary: Ten novel small-molecule fluorophores containing two ImPy units are synthesized and characterized. The emissive properties of these compounds can be tuned by the substituent effect, resulting in a range of emission colors from near-UV to (deep-)blue. The study provides insights into the electronic properties and potential applications of these ImPy-based emitters.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Rebecca Vismara, Stephanie Terruzzi, Angelo Maspero, Toni Grell, Filippo Bossola, Angelo Sironi, Simona Galli, Jorge A. R. Navarro, Valentina Colombo
Summary: This work demonstrates that by using proper data treatment, in situ high-resolution powder X-ray diffraction (HR-PXRD) at variable temperature and gas pressure can reveal atomic details of CO2 adsorption in a robust iron(III) pyrazolate-based MOF. The occupancy values of CO2 molecules obtained from HR-PXRD can be used to construct highly reliable adsorption isotherms. These isotherms accurately match the results of conventional gas sorption experiments and Monte Carlo simulations, indicating the potential of the multi-technique approach to understand adsorption processes in metal-organic frameworks.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Applied
Abdelaziz Jouaiti, Valerio Giuso, Cristina Cebri, Pierluigi Mercandelli, Matteo Mauro
Summary: A novel family of TzTz fluorophores with alkylpyridine substituents of different lengths was investigated for their optical properties. The compounds displayed strong absorption and emission characteristics, with the core structure playing a major role in the emission. The positional isomerism and protonation of the peripheral pyridines further modulated the photophysical properties.
Article
Multidisciplinary Sciences
Damien Bissessar, Thibault Thierry, Julien Egly, Valerio Giuso, Thierry Achard, Pascal Steffanut, Matteo Mauro, Stephane Bellemin-Laponnaz
Summary: We synthesized and studied three new copper halide derivatives 2a-c, which are tetranuclear copper-iodide clusters consisting of a cubane-like {Cu4I4} motif and phosphine ligands P. They differ in the type of phosphines used as ligands: a monophosphine with a single pendant ester unit (2a), two pendant ester units (2b), and a diphosphine containing two esters in the linker (2c). The complexes displayed intense and long-lived photoluminescence in the orange region with PLQY values of 0.43-0.84 at room temperature, mainly associated with a (CC)-C-3 excited state with mixed (XMCT)-X-3 character.
Article
Chemistry, Physical
Valerio Giuso, Elise Jouaiti, Cristina Cebrian, Sabrina Parant-Aury, Nathalie Kyritsakas, Christophe Gourlaouen, Matteo Mauro
Summary: This study presents a series of four cationic Zn-II complexes (Zn1-Zn4) coordinated by substituted bis-imidazo[1,2-a]pyridine (ImPy) ligands (L1-L4). These complexes exhibit intense emission in the near-UV to blue range with high photoluminescence quantum yields in DMF solution. Moreover, complex Zn4 shows solvatochromic behavior and a unique structureless green photoluminescence in the solid state.
Article
Engineering, Electrical & Electronic
Abdelaziz Jouaiti, Dun-Cheng Huang, Valerio Giuso, Cristina Cebrian, Pierluigi Mercandelli, Kuan-Hsun Wang, Chih-Hao Chang, Matteo Mauro
Summary: This article describes a series of emitters that exhibit efficient photoluminescence and electroluminescence in the blue region. These emitters are used as materials for the fabrication of efficient blue organic light-emitting diodes (OLEDs). The OLED devices fabricated with these emitters exhibit high external quantum efficiency and luminance, demonstrating their potential for practical applications.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Valerio Giuso, Jeannine Yang, Jeremy Forte, Heloise Dossmann, Chantal Daniel, Christophe Gourlaouen, Matteo Mauro, Benoit Bertrand
Summary: A series of binuclear gold complexes have been synthesized and characterized. These complexes exhibit long-lived yellow-green phosphorescence in the solid state with high photoluminescence quantum yields. Two of the complexes show promising antiproliferative activity against lung adenocarcinoma cells.
Article
Chemistry, Physical
Valerio Giuso, Christophe Gourlaouen, Mathias Delporte-Pebay, Thomas Groizard, Nicolas Vanthuyne, Jeanne Crassous, Chantal Daniel, Matteo Mauro
Summary: In this study, computational and experimental comparison of the optical properties of a series of enantiopure phosphorescent rhenium(i) tricarbonyl complexes was conducted, revealing the influence of excited state characteristics on ECD and CPL activities, and providing insights for the construction of efficient CPL emitters through chemical design.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Delia Blasi, Valentina Nicolai, Rosa M. Gomila, Pierluigi Mercandelli, Antonio Frontera, Lucia Carlucci
Summary: Cocrystallization of a bis[1-(4-pyridypbutane-1,3-dionato]copper(ii) complex and 1,4-diiodoperfluorobenzene in the presence of pyridine leads to the formation of a 1:1 cocrystal, where both the sigma and pi-holes of 1,4-diiodoperfluorobenzene are involved. The crystal structure reveals short arene CuO4 center dot center dot center dot pi-hole stacking contacts, in which the (d(z2)-(CuO4)-O-II) moiety acts as an integrated five-center pi-hole acceptor. DFT calculations, combined with quantum theory of atoms-in-molecules and noncovalent interaction plot analyses, support the structurally defining role of the (d(z2)-(CuO4)-O-II)center dot center dot center dot pi-hole contacts.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Delia Blasi, Silvio Quici, Simonetta Orlandi, Pierluigi Mercandelli, Andrey Sokolov, Eugeny Alexandrov, Lucia Carlucci
Summary: A new nanometric length beta-diketone ligand (HL) combined with silver(I) has been used to assemble two-dimensional coordination networks (CNs) with the highest level of interpenetration reported so far. The degree of interpenetration in the CNs is determined by the conformational steric hindrance of the ligand and the nature of the counterions. The unique topologies and interesting emissive properties of the CNs make them significant in the field of coordination chemistry.
Article
Chemistry, Inorganic & Nuclear
Delia Blasi, Pierluigi Mercandelli, Lucia Carlucci
Summary: This study develops new ligands with specific functionalities and investigates their reactivity and structural properties with metals. The results show that these ligands can form various multi-dimensional supramolecular structures and exhibit good coordination abilities.
