Article
Chemistry, Inorganic & Nuclear
Andreia Forte, Sandra Gago, Manuela Ribeiro Carrott, Peter Carrott, Celso Alves, Fernando Teodoro, Rui Pedrosa, Isabel M. Marrucho, Luis C. Branco
Summary: Organic salts based on different choline derivative cations and metal ions were immobilized in mesoporous silica nanoparticles through a two-step synthetic method, characterized using various techniques and evaluated for cytotoxicity in different cell lines. The characterization data confirmed successful functionalization and provided insights into the materials' properties, while the cytotoxicity results revealed differences between the metal organic salts and their immobilized analogues.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Analytical
Sara Santiago, Hugo Cruz, Noemi Jordao, Pablo Gimenez-Gomez, Karolina Zalewska, Xavier Munoz-Berbel, Andreia F. M. Santos, Jordi Hernando, Luis C. Branco, Gonzalo Guirado
Summary: This study establishes the photoelectrochromic properties of four diarylethene ionic liquids (DAE-ILs) and demonstrates their potential applications in smart ionogels for photoelectrochemical devices.
MICROCHEMICAL JOURNAL
(2022)
Article
Engineering, Environmental
Jinbo Kim, Donghwan Kim, Hwandong Jang, Yanghyun Auh, Byeonggwan Kim, Eunkyoung Kim
Summary: A transparent self-powered photoelectrochromic capacitive window (PECW) was developed by combining a high color contrast electrochromic polymer, a transparent energy-harvesting layer, and a redox ionic liquid (RIL). The PECW demonstrated high transparency, electrochromic color contrast, long cyclability, and high photocoloration efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Nabeel Mujtaba Abbasi, Victoria R. Zeger, Anis Biswas, Jared L. Anderson
Summary: This study focuses on magnetic ionic liquids (MILs) containing paramagnetic centers. It shows that modifications in the chemical structure of diglycolamides can influence the physico-chemical properties of MILs. Transition metals can improve thermal stability and reduce viscosity, leading to higher effective magnetic moments. The results highlight the importance of structural tunability in MILs for various applications such as organic synthesis and chemical separations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Wei Wu, Hailan Zeng, Weiran Zhang, Weili Zhang, Haiyun Jiang, Guohua Wu, Ziyu Li, Xiang Wang, Yiyang Huang, Zhiyong Lei
Summary: This study presents a method for in-situ electrochemical polymerization of PEDOT:PSS/Reline films in aqueous solution. By using deep eutectic solvents composed of choline chloride and urea (Reline) as green solvents and dopants, PEDOT:PSS/Reline films with excellent electrochromic properties were prepared.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Wanyu Chen, Siyuan Liu, Le Guo, Guixia Zhang, Heng Zhang, Meng Cao, Lili Wu, Tianxing Xiang, Yong Peng
Summary: An ionic liquid-based ionically cross-linked gel polymer electrolyte (GPE-ILs) was successfully synthesized and used to fabricate high-performance electrochromic devices. The GPE-ILs exhibited good ionic conductivity, thermal stability, and self-healing ability.
Article
Polymer Science
Haiyun Jiang, Wei Wu, Zigong Chang, Hailan Zeng, Ronglian Liang, Weiran Zhang, Weili Zhang, Guohua Wu, Ziyu Li, Haifei Wang
Summary: In this study, PEDOT composite films doped with EMI-TFSI were prepared by in situ electrochemical polymerization, showing enhanced morphology, structure, electrochromic properties, and optical properties compared to normal PEDOT:PSS films. The introduction of EMI-TFSI resulted in superior electrochemical and optical properties, including larger ion diffusion coefficient, wider color change range, shorter response time, and higher coloring efficiency. The PEDOT:PSS/EMI-TFSI films exhibited higher stability overall.
Article
Chemistry, Physical
Mu Naushad, Tansir Ahamad, Mohammad Rizwan Khan
Summary: In this study, novel magnetic ionic liquid based nanocomposites were fabricated for the efficient production of biodiesel from palm oil. The results showed that [NiFe2O4@BMSI]HSO4 exhibited higher catalytic performance and reusability compared to NiFe2O4@BMSI]Br, making it a promising catalyst for transesterification reactions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Z. Elyasi, G. R. Najafi, J. Safaei Ghomi, M. A. Sharif
Summary: This study introduces a novel polymerized ionic liquid as a catalyst for the efficient synthesis of pharmaceutical scaffolds with broad structural diversity under environmentally-friendly conditions.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Yafei Liu, Yiyu Shi, Yan Cui, Fen Zhao, Mindong Chen
Summary: In this study, a novel imidazolium-based ionic liquid-modified magnetic polymer was synthesized and used for the adsorption of acid dye FCF. The results showed that the magnetic polymer had excellent adsorption capacity in a wide pH range and good reusability.
Article
Chemistry, Analytical
Shashini De Silva, Iran Ocana-Rios, Cecilia Cagliero, Morgan R. Gostel, Gabriel Johnson, Jared L. Anderson
Summary: A simple and rapid ionic liquid-based extraction method was developed for isolating genomic DNA from Arabidopsis thaliana plant tissue. The method involved using ionic liquid or magnetic ionic liquid directly applied to treated plant tissue to facilitate cell lysis and DNA extraction. The DNA-enriched extracts could be directly used in qPCR without needing additional purification steps and showed good preservation of plant DNA at room temperature.
ANALYTICA CHIMICA ACTA
(2023)
Article
Electrochemistry
Guoqiang Xing, Lei Wu, Guoqiang Kuang, Tian Ma, Zhengjian Chen, Yijie Tao, Yue Kang, Shiguo Zhang
Summary: By improving the molecular design of the electrochromic polymer and electrolyte, researchers have successfully reduced the interface resistance, increased the ion diffusion coefficient, and significantly improved the performance of the electrochromic devices.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Lu Liu, Qing Wan, Chen Gui, Ping He, Zujin Zhao, Zhiming Wang, Ben Zhong Tang
Summary: In this research, phenanthro[9,10-d]imidazole is introduced into an acyl chloride agent of TPEPCl to enhance stability via the delocalization effect. Rarely reported acyl chloride crystals have been achieved, further confirming its stability. The changes of TPEPCl are visually monitored using tetraphenylethylene group and aggregation-induced emission (AIE) characteristics. The reactivity of TPEPCl can be stimulated by strong alkaline solution or high temperature. Crystallography analyses of acyl TPE-PI derivatives are discussed and the relationship between the delocalization structure and stability is determined.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Antoine Mazel, Lucas Rocco, Nicolas Penin, Aline Rougier
Summary: Novel electrochromic hybrid thin films are synthesized using liquid-phase epitaxy to produce highly oriented surface-anchored metal-organic frameworks (SurMOFs). The orange color of the {Zn-2(PDICl4)(2)} crystalline thin films can be reversibly switched through electrochemical reduction. A dark blue color with a color efficiency of 104.8 cm(2) C-1 (lambda = 645 nm) can be achieved in a lithium-based electrolyte within seconds. The color of the reduced state can be easily modulated by changing the electrolyte composition. Additionally, electrochromic devices with a unique configuration have been designed to switch from an initial orange color to dark blue and cyan simultaneously.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuval Simha, Gil Daniels, Amalya Goldman, Elihay Kuniavsky, Dmitry Tsvelikhovsky
Summary: A new strategy for direct access to fully substituted polycyclic imidazolium salts using alpha-enaminones and proline as the reagents is reported. This open-flask operation is a catalyst-, metal-, and Lewis acid-free green process, which does not require an ion-exchange step. It can produce good yields with minimal formation of side products, and is not limited to aryl substituents.
Review
Chemistry, Multidisciplinary
Luis Cruz, Nuno Basilio, Nuno Mateus, Victor de Freitas, Fernando Pina
Summary: Flavylium compounds are a diverse family of plant pigments that contribute to a wide range of colors. There is growing interest in synthesizing different flavylium compounds with various substitution patterns for industrial applications. This Review provides an overview of the chemistry, synthetic and enzymatic approaches, and properties of flavylium-based compounds.
Article
Agriculture, Multidisciplinary
Diogo Sousa, Nuno Basilio, Joana Oliveira, Victor de Freitas, Fernando Pina
Summary: The kinetics and thermodynamics of pH-dependent reversible and irreversible processes leading to color fading of certain dyes are investigated. The disappearance of quinoidal bases occurs in three distinct steps upon the addition of base.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Applied
Samaneh Sharif, Paula Nabais, Maria J. Melo, Fernando Pina, M. Conceicao Oliveira
Summary: This research calculated the photodegradation quantum yields of flavonoid yellows and compared their reactivity to other flavonoids. The stability of flavonoid yellows is related to excited state proton transfer and the position of hydroxyl groups. In addition, the environment has a significant impact on the stability. The study of degradation products revealed that the double bond between C2 and C3 in the C ring is the most reactive site.
Article
Chemistry, Multidisciplinary
Ambrosio Camuenho, Andre Seco, A. Jorge Parola, Nuno Basilio, Fernando Pina
Summary: The study investigates the intermolecular copigmentation of caffeine with malvidin-3-O-glucoside using a comprehensive procedure. The addition of caffeine significantly reduces the degradation rate of quinoidal bases in neutral solutions. In basic solutions, caffeine also decreases the degradation rate of anionic chalcones.
Article
Chemistry, Applied
Fernando Pina, Nuno Basilio, A. J. Parola, Maria J. Melo, Joana Oliveira, Victor de Freitas
Summary: Blue was the last color to be spread in Nature by anthocyanins, and the last color to be managed by Humans in Anthropocene. It took a long time for humanity to figure out how to reproduce and use blue, but plants developed strategies like intramolecular copigmentation and metalloanthocyanins to achieve the color. Blue was absent in early cave paintings and came later than red and green in LEDs and LASERs. It was only in the late 20th century that genetic engineering created blue flowers and blue remains sought after as a natural alternative to synthetic colorants. Despite being second-rate in the West, blue is now the preferred color in many countries.
Article
Chemistry, Physical
Karolina Zalewska, Isabel Pinto, Luis Cabrita, Malgorzata E. Zakrzewska, Joao P. Noronha, M. Nunes da Ponte, Luis C. Branco
Summary: Different Chiral Ionic Liquids (CIL) based on L-proline have been developed using simple and efficient synthetic methodologies. These CILs, with L-proline as a cation or anion combined with suitable counter-ions, were characterized to evaluate the influence of counter-ions on their properties. The most promising CILs were tested as chiral catalysts in asymmetric Michael addition reactions, achieving similar or even better conversions and enantioselectivities compared to L-proline, and showed good product extraction performance using supercritical CO2 processes.
Article
Infectious Diseases
Ricardo Ferraz, Nuno Santarem, Andreia F. M. Santos, Manuel L. Jacinto, Anabela Cordeiro-da-Silva, Cristina Prudencio, Joao Paulo Noronha, Luis C. Branco, Zeljko Petrovski
Summary: This study focused on the development of novel OSILs-API based on amphotericin B and their biological activity against Leishmania infantum. The compounds synthesized showed increased activity compared with starting chloride forms, with [P-6,P-6,P-6,P-14][AmB] identified as the most promising formulation. Synergism in antiprotozoal activity was also evaluated for [P-6,P-6,P-6,P-14][AmB], indicating its potential as an agent against leishmaniasis.
Article
Biochemistry & Molecular Biology
Antonio Barreira, Andreia F. M. Santos, Madalena Dionisio, Ana R. Jesus, Ana Rita C. Duarte, Zeljko Petrovski, Ana B. Paninho, Marcia G. Ventura, Luis C. Branco
Summary: In this study, ionic liquids were synthesized to improve the solubility of levothyroxine (T4), and [C(2)OHMiM][T4] was found to be a promising alternative with good bioavailability and no significant cytotoxicity observed against cells.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Mariana T. Donato, Jonas Deuermeier, Rogerio Colaco, Luis C. Branco, Benilde Saramago
Summary: The goal of this study was to develop new protic ionic liquids (PILs) as additives for lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs with different combinations of cations such as [MIMH], [4-picH], [PyrH], [DBUH], and [TMGH], and anions such as [HSO4] and [MeSO3] were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best performing additive was found to be [4-picH][HSO4], which formed a protective film on the silicon surface, resulting in a 15-fold reduction in wear compared to PEG200 alone.
Article
Chemistry, Multidisciplinary
Diogo Inacio, Ana Lucia Pinto, Ana B. Paninho, Luis C. Branco, Sunny K. S. Freitas, Hugo Cruz
Summary: Five Covalent Organic Frameworks (COFs) were synthesized and tested as dyes and additives in Dye-Sensitized Solar Cells (DSSCs). These porous nanomaterials were made from commercially available ionic dyes and antibiotics, and the most promising COF, RIO-60, showed improved performance compared to previous COFs in similar devices. This research indicates the potential of using the RIO family for enhancing DSSCs and increasing their lifespan.
Article
Green & Sustainable Science & Technology
V. D. da Silva, K. Zalewska, Z. Petrovski, C. D. Buarque, L. C. Branco, P. M. Esteves
Summary: Wastewater pollution with micropollutants in low concentrations is a significant problem that conventional water and wastewater treatment methods struggle to resolve. Covalent Organic Frameworks (COFs), as porous materials, have shown great potential for application in separation processes and water purification due to their porosity, crystallinity, and stability. COFs have been used for the removal of various industrial pollutants in water and have demonstrated high selectivity in molecular separation. This review highlights the advancements and potential of COFs in water treatment and purification applications. (c) 2022 Elsevier Ltd. All rights reserved.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Biochemistry & Molecular Biology
Andreia Forte, Sandra Gago, Celso Alves, Joana Silva, Joana Alves, Rui Pedrosa, Cesar A. T. Laia, Isabel M. Marrucho, Luis C. Branco
Summary: This study explores the formulation of magnetic ionic liquids (MILs) or organic salts based on lanthanides as anions. A set of choline-family-based salts, along with two other cation families, were combined with Gadolinium(III) and Terbium(III) anions. The magnetic moments of the lanthanides were found to be correlated with the structural features of the cation, and most of the prepared compounds were non-toxic to cells.
Article
Pharmacology & Pharmacy
Luis Filipe, Telma de Sousa, Dario Silva, Miguel M. Santos, Manuela Ribeiro Carrott, Patricia Poeta, Luis C. Branco, Sandra Gago
Summary: The combination of active pharmaceutical ingredients in the form of ionic liquids or organic salts (API-OSILs) with mesoporous silica nanoparticles (MSNs) as drug carriers can enhance the capabilities of current antibiotics, especially against resistant strains of bacteria. In this study, three nanomaterials based on the modification of MSN surface with different ionic liquids coupled with anionic ciprofloxacin were prepared. These materials showed no cytotoxicity and exhibited improved antibacterial activity against both resistant and sensitive strains of K. pneumoniae. One particular nanomaterial, [MSN-Chol][Cip], showed significant enhancement with a tenfold decrease in MIC against sensitive strains. The importance of this study is rated at 8 out of 10 for its potential application in combating antibiotic resistance.
Article
Humanities, Multidisciplinary
Luis Carlos S. Branco
Summary: This essay analyzes the music and performances of Portuguese singer and songwriter Antonio Variacoes and David Bowie, examining the queer apocalyptic imagination present in their work. Both artists intervened in gender issues in different decades and countries, using ancient apocalyptic universes in their music to express a personal and queer postmodern vision. The essay also examines the lyrics of two significant songs by Variacoes and Bowie, using theoretical frameworks on the apocalypse by Jose Braganca de Miranda and Jacques Derrida.
JOURNAL OF LUSOPHONE STUDIES
(2022)
Article
Chemistry, Physical
Paula Araujo, Joana Oliveira, Nuno Basilio, A. Jorge Parola, Victor de Freitas, Fernando Pina
Summary: The thermodynamics and kinetics of compound 7-diethylamino-4 '-dimethylaminoflavylium were studied in various solvents and in the presence of micelles. Different pH domains and photochemical reactions were observed in different solvents and micelles.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
