Article
Chemistry, Multidisciplinary
Kun Ho Kenny Park, Nils Frank, Fernanda Duarte, Edward A. Anderson
Summary: This study reports a collective synthesis of nine illudalane sesquiterpenes using bicyclic thiophene S,S-dioxides as precursors. The synthesis is achieved through inverse reactions and furans are utilized as unusual dienophiles. Theoretical studies provide insights into the reaction pathways involving thiophene S,S-dioxides with different types of dienophiles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Takahiro Kawatsu, Jun-Chul Choi, Kazuhiko Sato, Kazuhiro Matsumoto
Summary: A series of compounds with uniformly sized and sequence-defined at the atomic level were successfully synthesized through a series of catalytic reactions.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Po-Shen Lin, Yamato Shoji, Shakil N. Afraj, Mitsuru Ueda, Ching-Hsuan Lin, Shin Inagaki, Taiki Endo, Shih-Huang Tung, Ming-Chou Chen, Cheng-Liang Liu, Tomoya Higashihara
Summary: Regioregular polythiophenes have been widely used in organic electronic applications due to their solution processability with chemical modification through side chain engineering, as well as their microstructural organization and good hole transport properties. The introduction of alkylthio side chains showed improved crystallinity and charge mobility in polythiophene semiconductors, with branched side chains helping to solve the issue of low regioregularity and enhancing the overall performance of OFET devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Yingying Zhang, William M. Postiglione, Rui Xie, Chi Zhang, Hao Zhou, Vipul Chaturvedi, Kei Heltemes, Hua Zhou, Tianli Feng, Chris Leighton, Xiaojia Wang
Summary: The authors demonstrate a continuous tuning of the thermal conductivity of strontium-doped lanthanum cobaltite by a factor of >5 at room temperature, via an electrolyte-gate-induced non-volatile topotactic phase transformation from perovskite to brownmillerite. The effects of these transitions on heat carriers, including electrons and lattice vibrations, are uncovered and deconvolved through various experiments and analyses. This research opens the door to non-volatile dynamic control of thermal transport in perovskite-based functional materials for thermal regulation and management in device applications.
NATURE COMMUNICATIONS
(2023)
Article
Polymer Science
Patricio A. Sobarzo, Alexis Gonzalez, Ignacio A. Jessop, Rene A. Hauyon, Jean Medina, Luis E. Garcia, Ximena Zarate, Carmen Gonzalez-Henriquez, Eduardo Schott, Alain Tundidor-Camba, Claudio A. Terraza
Summary: A series of new oligo-poly(azomethine)s incorporating tetra-phenylsilane and 3,4-ethylenedioxythiophene units were successfully synthesized. These compounds are thermally stable and soluble in low-boiling point solvents. They exhibit blue-violet absorption and emission in the UV-vis region with moderate Stokes shifts. The electronic energy levels are influenced by the interunit interactions.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Jo-Wen Chiang, Po-Yu Lu, Chien-Chung Han
Summary: A facile and effective fluorination method was successfully established for making unprecedented high purity 2-fluoro-3-alkoxythiophene compounds. These compounds can be used to synthesize polymers with superior properties. The properties of the polymers were evaluated using various analytical methods, and the living character of the polymerization was confirmed. The chemical insights associated with their high regioregularity were explored and rationalized.
Article
Chemistry, Multidisciplinary
Noriko Nakamura, Nobuaki Tanaka, Seiichi Ohta
Summary: This study achieved a size-tunable synthesis of Pdots by controlling the hydrolysis rate of the stabilising agent and evaluated their cellular imaging properties.
Article
Chemistry, Multidisciplinary
W. Fang, Y. Mi, Y. Yang, Y. Jiang, Y. Liu, W. Shangguan
Summary: Bismuth-based Sillen-Aurivillius oxyhalide Bi4MO8Cl is a promising visible-light photocatalyst, and replacing the transition element M can enhance its photocatalytic hydrogen generation performance.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Shuai Guo, Meng Wang, Shang Sui, Jiaqiang Li, Hui Chen, Xuehui Hao, Xingchuan Zhao, Xin Lin
Summary: Chemical short-range order (CSRO) plays a crucial role in the mechanical properties of high-entropy alloys (HEAs). The research reveals that there are differences in CSRO between single-phase and dual-phase systems, and the distribution of enriched regions and the proportion of hexagonal close-packed (HCP) structure are important factors affecting the strength and ductility of the alloy.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Physical
Jia Lin, Yelin Chen, Jiangli Huang, Guohui Cai, Yihong Xiao, Yingying Zhan, Ying Zheng
Summary: By tuning the phase structure of the supports, the performance of Pd/CZA catalysts can be improved. Calcining the supports at high temperatures can enhance the reducibility and oxygen mobility of the catalysts, leading to improved activity and stability. CZA-supported catalysts calcined at 1300 degrees Celsius exhibit excellent low-temperature activity, stability, and water resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Shuai Guo, Shang Sui, Meng Wang, Xuehui Hao, Hui Chen, Changzheng Wang, Baoxu Huang, Xin Lin
Summary: This study investigated the effects of chemical short-range order (CSRO) and grain size on the strength and ductility of high-entropy alloys (HEAs) using atomic simulations. It was found that CSRO can enhance the strength and ductility of HEAs by optimizing the density and distribution of dislocations. Additionally, the presence of CSRO eliminates the inverse Hall-Petch relation observed in the system without CSRO.
Article
Optics
Daibing Zhou, Yiming He, Dan Lu, Song Liang, Lingjuan Zhao, Wei Wang
Summary: This paper presents a directly modulated InGaAlAs/InP DBR laser fabricated by butt-joint technology, demonstrating 25 Gb/s data transmission and a wavelength tuning range of 14.28 nm, making it a suitable choice for WDM-PON systems.
Article
Chemistry, Physical
Dengwu Wang, Cuihong Zhang, Achmad Jusuf Zulfikar, Sadok Mehrez, Isabelle Huynen, Ibrahim Mahariq, Ibrahim Elbadawy
Summary: The microwave absorption performance of the bi-layer absorber can be improved by adjusting the composition, thickness, and arrangement of the layers. Two magnetic and magneto-electric components, GdMnO3 (G) and GdMnO3-50 wt.% MoSe2 (GM), were prepared and their impact on microwave absorption characteristics was examined. The findings show that a single-layer absorber with G or GM components alone does not have good microwave absorption capability, but a bi-layer absorber with G as the matching layer and GM as the absorber exhibits exceptional microwave absorption performance.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Junya Adach, Kazushi Kinbara
Summary: In this study, the responsiveness of monodisperse-oligo(ethylene glycol)-modified AnP(2) to micelles and vesicles in buffer solutions was investigated. It was found that both the length of the side chains and pH significantly affected the sensitivity of AnP(2) for these aggregates.
Article
Engineering, Electrical & Electronic
Riyaz Ahmad, Gaurav Kumar Sharma, Dharmendar Boolchandani, Ashutosh Yadav
Summary: This paper presents a novel delay cell circuit for a differential ring oscillator (DRO) with a large tuning range, and its application in a charge pump phase lock loop (CP-PLL) frequency synthesizer. The proposed circuit generates a tuning range of 96.77 MHz-5.296 GHz for the 3-stage DRO and 36.33 MHz-2.803 GHz for the 5-stage DRO. The suggested DROs exhibit low total harmonic distortion (%THD) and consume moderate power. The design's layout and simulation results show satisfactory performance in terms of tuning range and phase noise.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Andrea Spanu, Tommaso Losi, Antonello Mascia, Annalisa Bonfiglio, Mario Caironi, Piero Cosseddu
Summary: This paper reports the development of a simple and reproducible approach for fabricating n-type organic field-effect transistors on flexible substrates. The key feature of the device, the channel length, is achieved using a self-alignment process that utilizes plasma etching of a thin Parylene C layer. The fabricated devices exhibit continuous operation and have an average transition frequency of 2.5 MHz and a maximum transition frequency of 5.5 MHz. This approach represents an interesting step towards miniaturizing flexible circuits in the field of large-area organic electronics, without the need for expensive and high-resolution techniques.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Biochemical Research Methods
Binita Nath, Lorenzo Caprini, Claudio Maggi, Alessandra Zizzari, Valentina Arima, Ilenia Viola, Roberto Di Leonardo, Andrea Puglisi
Summary: This article proposes a passive technique for increasing the concentration of motile sperms without external forces or flows. Through microfluidic experiments and simulations, the effectiveness of the technique is demonstrated, along with the identification of key components for optimal trap design.
Article
Nanoscience & Nanotechnology
Jonathan Barsotti, Sara Perotto, Andrea Candini, Elisabetta Colombo, Franco V. A. Camargo, Stefano Di Marco, Mattia Zangoli, Samim Sardar, Alex J. Barker, Cosimo D'Andrea, Giulio Cerullo, Shlomo Rozen, Fabio Benfenati, Francesca Di Maria, Guglielmo Lanzani
Summary: This study demonstrates that thiophene-based core@shell nanoparticles with an oxidized shell (P3HT@PTDOx NPs) exhibit a type II interface at the particle surface. This unique nanoarchitecture enables the development of advanced photon nanotransducers with distinct chemical-physical and biofunctional properties. The spatial localization of excitation energy in P3HT@PTDOx NPs differs from nonoxidized NPs, leading to a prevalence of surface states and efficient photostimulation of retinal neurons. In degenerate retinas, P3HT@PTDOx NPs show superior effectiveness in photostimulation compared to P3HT NPs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ivan K. Ilic, Valerio Galli, Leonardo Lamanna, Pietro Cataldi, Lea Pasquale, Valerio F. Annese, Athanassia Athanassiou, Mario Caironi
Summary: Edible electronics is a growing field that aims to produce digestible devices using only food ingredients and additives. The development of fully edible electronic devices could revolutionize gastrointestinal tract monitoring, therapeutics, and food quality monitoring. A rechargeable edible battery, made from common food ingredients and dietary supplements, has been created, providing a power source for small electronic devices. This proof-of-concept battery opens up new opportunities for safer medical diagnostics, treatments, and innovative food quality monitoring.
ADVANCED MATERIALS
(2023)
Article
Biochemical Research Methods
Fabiana Russo, Francesco Tolomeo, Maria Angela Vandelli, Giuseppe Biagini, Aldo Lagana, Anna Laura Capriotti, Andrea Cerrato, Luigi Carbone, Elisabetta Perrone, Alberto Cavazzini, Vincenzo Maiorano, Giuseppe Gigli, Giuseppe Cannazza, Cinzia Citti
Summary: The evaluation of the chiral composition of phytocannabinoids in the cannabis plant is crucial due to the distinct pharmacological effects of the (+) and (-) enantiomers. This study presents the first stereoselective synthesis of pure (+) enantiomers of main phytocannabinoids and the development of an optimized achiral-chiral liquid chromatography method for their analysis. The results indicate that the extraction procedure does not lead to a change in configuration for the phytocannabinoids.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2023)
Article
Chemistry, Physical
Mattia Zangoli, Andrea Cantelli, Andrea Candini, Anna Lewinska, Federica Fardella, Angela Tino, Giuseppina Tommasini, Maciej Wnuk, Matteo Moschetta, Sara Perotto, Marco Lucarini, Claudia Tortiglione, Guglielmo Lanzani, Francesca Di Maria
Summary: Here we demonstrate that thiophene-based core@shell nanoparticles, P3HT@PTDO NPs, exhibit a unique photoreactivity due to nanosegregation. The nanosegregation of the materials leads to the promotion of photogenerated electrons from the inner core to the outer shell, making the nanoparticles more reactive to the environment. Fluorometric and EPR techniques confirm the photoredox reactivity of the nanoparticles, with the formation of transient ROS. The biocompatibility of these nanoparticles is also demonstrated in cells and Hydra polyps.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Leonardo Lamanna, Giuseppina Pace, Pietro Cataldi, Fabrizio Viola, Marco Friuli, Valerio Galli, Christian Demitri, Mario Caironi
Summary: Edible electronics that can be safely ingested and degraded in the human body have various applications, such as sensing physiological parameters, tagging food, and developing edible actuators. Ethylcellulose and activated carbon composites have been proposed as suitable materials for energy harvesting and storage in these edible devices. The combination of these materials allows for the production of bi-layered films with insulating top layers and low electrical resistivity at the bottom, enabling the successful operation of electropositive elements in organic triboelectric nanogenerators and electrodes in fully edible supercapacitors. These edible devices demonstrate potential for future applications in energy generation and storage.
Article
Chemistry, Multidisciplinary
Mengting Jiang, Stefano Pecorario, Nicolas F. F. Zorn, Jana Zaumseil, Mario Caironi
Summary: Solution-processed networks of semiconducting single-walled carbon nanotubes (SWCNTs) have potential applications in digital circuits, thermoelectric devices, and healthcare. Charge modulation microscopy (CMM) is used to study charge transport in field-effect transistors (FETs) based on different types of SWCNT networks, providing insights into the spatial distribution and evolution of free carriers during FET switching. The results show that preferential percolation paths are responsible for the transportation of holes and electrons, and the SWCNT density and band gap influence the charge density and transport paths.
ADVANCED MATERIALS INTERFACES
(2023)
Editorial Material
Chemistry, Physical
Annamaria Petrozza, Mario Caironi
ACS ENERGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Ilenia Viola, Fabio Matteocci, Luisa De Marco, Leonardo Lo Presti, Silvia Rizzato, Simona Sennato, Alessandra Zizzari, Valentina Arima, Antonio De Santis, Chiara Rovelli, Silvio Morganti, Matthias Auf Der Maur, Marianna Testa
Summary: Organometal halide perovskites (OMHP) are promising materials for fast, sensitive, and large area photodetectors. In this study, a controlled growth of OMHP single crystals in the form of microwires directly on conductive patterned substrates was achieved using a microfluidics-assisted technique. The resulting vertical devices with a pixelated sensor layer exhibit gain, a responsivity up to 200 AW(-1), and a fast rise time down to 35 µs. This is the first demonstration of an OMHP vertical device on a patterned substrate using microfluidics-assisted techniques.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Polymer Science
Carmela Tania Prontera, Nunzia Gallo, Roberto Giannuzzi, Marco Pugliese, Vitantonio Primiceri, Fabrizio Mariano, Antonio Maggiore, Giuseppe Gigli, Alessandro Sannino, Luca Salvatore, Vincenzo Maiorano
Summary: Bio-based polymers have gained significant attention for their potential applications as alternatives to conventional polymers. In the field of electrochemical devices, polymers are being explored as solid-state and gel-based electrolytes to enhance device performance. This study focuses on the fabrication and characterization of collagen membranes for their potential use as a polymeric matrix for gel electrolytes. The cross-linked collagen membranes showed good stability, water absorption capability, and resistance, making them suitable candidates for electrolytes in electrochromic devices.
Article
Chemistry, Multidisciplinary
Tommaso Losi, Lukasz Witczak, Mateusz Lysien, Pietro Rossi, Paola Moretti, Chiara Bertarelli, Virgilio Mattoli, Mario Caironi
Summary: Organic electronics is a promising technology for low-cost and simple device fabrication. This study successfully integrated direct written metal contacts in fully solution fabricated n-type OFETs, achieving a short channel of 1.4 μm and a high transition frequency of 25.5 MHz at 25 V. This demonstrates the potential of additive, high-resolution direct-writing techniques for high-frequency organic electronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Ao Liu, Huihui Zhu, Sai Bai, Youjin Reo, Mario Caironi, Annamaria Petrozza, Letian Dou, Yong-Young Noh
Summary: Advancements in metal halide perovskite semiconductors have created renewed interest in their use in transistors. Improvements in performance have been made through fine-tuning of material compositions, processing techniques, and device engineering. However, more understanding is needed regarding the electrical properties of these materials, as well as their potential for use in large-area and microscale electronics.
NATURE ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Andrea Perinot, Francesca Scuratti, Alberto D. Scaccabarozzi, Karolina Tran, Jorge Mario Salazar-Rios, Maria Antonietta Loi, Giovanni Salvatore, Simone Fabiano, Mario Caironi
Summary: The integration of organic electronic circuits into real-life applications requires meeting requirements such as low voltage and reduced power consumption. This paper proposes a solution-based fabrication method for low-voltage organic transistors using a photo-cross-linked, low-k dielectric interlayer. The method is widely applicable to various semiconducting and dielectric materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Marco Carlotti, Tommaso Losi, Francesco De Boni, Federico Maria Vivaldi, Esteban Araya-Hermosilla, Mirko Prato, Andrea Pucci, Mario Caironi, Virgilio Mattoli
Summary: The possibility of generating regions with different electronic properties within the same organic semiconductor thin film could lead to new opportunities for designing and fabricating organic electronic devices and circuits. This study introduces a new approach using a highly processable polymer precursor to yield two different conjugated polymers with complementary electronic properties. The precursor can be functionalized to improve solubility or insert specific functionalities, and high-molecular-weight conjugated polymers can be prepared without solubilizing side chains. Thin films of the precursor can be transformed to create single organic layers with regions of different chemical nature and electronic properties.
