Review
Chemistry, Multidisciplinary
Utsab Manna, Gopal Das
Summary: This research focuses on the fixation mechanism of atmospheric CO2 in self-assembled artificial receptors and discusses the structural aspects between host/host-assemblies and anions. Special emphasis is placed on the construction of typical supramolecular host-guest systems formed by absorbing atmospheric CO2, and the differential coordination behavior of these anions in aqueous or organic media is explored, along with their roles in other significant applications.
Article
Chemistry, Multidisciplinary
Pit Dominique, Martin Schnurr, Bartosz Lewandowski
Summary: The glucose-based crown ether reported in this study shows high chiral recognition capabilities towards a wide range of amino-acid methyl esters in aqueous environments. It exhibits among the highest enantioselectivities for amino-acids with extended hydrophobic side chains compared to other small molecule synthetic receptors.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Lixia Luo, Ying Ye, Zhe Liu, Jiangtao Liu
Summary: A cholesteric chiral artificial receptor L5 was synthesized and a rapid method for detecting iodide ions was developed. Addition of L5 to Ethanol/Tris solution changed the color of the iodide ion solution from colorless to light yellow, enabling naked-eye identification. The binding of L5 to iodide ions was confirmed by various tests, and it was found that the coordination ratio was 1:1. The hydrogen bonding between L5 and iodide ions was confirmed through multiple analyses. The detection limit of L5 was 0.025 μmol/L, making it suitable for efficient and convenient detection of iodide ions in food samples.
Article
Chemistry, Analytical
Xuezhi Sun, Zhibo Fu, Min Zhang, Hua Fu, Chuhui Lin, Jingjing Kuang, Hongyang Zhang, Ping Hu
Summary: This study proposes a new method for recognizing chiral molecules based on an electrochemical detection approach. Chiral Cross-Linked MOF (CLMOF) is formed by coordinating beta-cyclodextrin with K ions and connecting MOFs with diphenyl carbonate, which can maintain a stable structure in aqueous environment. A GO-CLMOF/GCE electrochemical sensor is constructed by modifying CLMOF and graphene oxide on the electrode surface, which shows excellent selectivity for dl enantiomers of mandelic acid. The method has potential applications in the identification and quantification of chiral isomers.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Chen Yuan, Shiguo Fu, Kuiwei Yang, Bang Hou, Yan Liu, Jianwen Jiang, Yong Cui
Summary: This study demonstrates that C-C single bond-based COFs can be prepared by direct reduction of C=C bond-linked frameworks, resulting in frameworks with high crystallinity, porosity, and chemical stability. The method involves crystal-to-crystal transformation and has the potential to produce chemically functionalized COFs with new linkages that are otherwise difficult to obtain.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Organic
Mingyu Chen, Chunxuan Qi, Yu-Ting Yin, Panpan Lv, Song Xiang, Jingjing Tian, Jing Feng Zhao, Hai-Tao Feng, Ben Zhong Tang
Summary: Enantioselective recognition plays a crucial role in various fields, and this study successfully synthesized a pair of chiral AIEgens with excellent enantioselectivity for chiral acids and amino acids. The chiral sensing ability was attributed to multiple hydrogen-bonding interactions and specific stereoselectivity.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Christoph Wallach, Yasmin Selic, Felix S. Geitner, Ajeet Kumar, Erling Thyrhaug, Jurgen Hauer, Antti J. Karttunen, Thomas F. Faessler
Summary: This study presents the synthesis of a highly red [Ge-9] cluster linked to an extended pi-electron system, showing intense optical properties. The compound has a close relation to fullerenes in terms of electronic structure and optical properties, which is significant for the design of photo-active cluster compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yanqing Fan, Jing He, Lin Liu, Guoqin Liu, Shengzhu Guo, Zhe Lian, Xiaonan Li, Weijie Guo, Xuebo Chen, Ying Wang, Hua Jiang
Summary: In this study, novel chiral carbon nanorings Sp-/Rp-[12]PCPP containing a planar chiral [2.2]PCP unit were synthesized and their chiroptical properties were investigated. It was found that Sp-/Rp-[12]PCPP could form ring-in-ring complexes with crown ether 18-Crown-6, as well as ternary complexes with 18-Crown-6 and S/R-protonated amines. The ternary complexes exhibited enhanced chiroptical signals and demonstrated a highly narcissistic chiral self-recognition for S/R-protonated chiral amines.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Andrea Stefani, Tommaso Salzillo, Patrizia Romana Mussini, Tiziana Benincori, Massimo Innocenti, Luca Pasquali, Andrew C. Jones, Suryakant Mishra, Claudio Fontanesi
Summary: This paper experimentally demonstrates the fundamental role of electron-spin/molecular-handedness interaction in the chiral recognition process. By comparing current versus potential (I-V) curves recorded using chiral electrode surfaces, the chiral recognition capability and interface handedness are investigated. The study confirms the central role of the metal(electrode)-sulfur(thiophene) interaction in the chemisorption process through various measurements. Spin-polarized I-V curves in spin-dependent electrochemistry and magnetic-conductive atomic force microscopy experiments provide evidence for chiral recognition. The results show that using a spin-polarized current allows for the recognition of the handedness of a chiral system.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Sanchita Kundu, Tochukwu Kevin Egboluche, Zehra Yousuf, Md Alamgir Hossain
Summary: A new simple urea-based dipodal molecular cleft has been synthesized and studied for its binding affinity for various anions. The receptor shows strong selectivity for fluoride among halides and moderate selectivity for acetate among oxoanions, displaying visible color changes in the presence of specific anions.
Article
Chemistry, Inorganic & Nuclear
Su-Li Dong, Yan Xu, Yin-Zhu Chen, Xiao-Sheng Yan, Zhao Li, Jian-Wei Xie, Yun-Bao Jiang
Summary: A new method for chiral recognition using coordination polymers of Ag+ with a chiral thiol ligand that contains a binding group is reported, showing excellent selectivity. The research demonstrates that a conformation change occurs upon interaction of a saccharide molecule with the polymeric chain receptor, promoting the next binding and leading to highly effective chiral recognition.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Song-Meng Wang, Yan-Fang Wang, Liping Huang, Li-Shuo Zheng, Hao Nian, Yu-Tao Zheng, Huan Yao, Wei Jiang, Xiaoping Wang, Liu-Pan Yang
Summary: Developing chiral receptors with an endo-functionalized cavity for chiral recognition is highly significant in the field of molecular recognition. This study introduces chiral naphthotubes containing a bis-thiourea endo-functionalized cavity, which effectively recognize neutral chiral molecules with high enantioselectivity. The chiral recognition mechanism is attributed to differences in multiple non-covalent interactions, where factors such as cavity shape, guest substituents, host flexibility, and binding modes contribute to creating these differences. Enantioselectivity is primarily driven by enthalpic differences, with enthalpy-entropy compensation also influencing the selectivity.
NATURE COMMUNICATIONS
(2023)
Review
Biochemistry & Molecular Biology
Patryk Niedbala, Kajetan Dabrowa, Sylwia Wasilek, Janusz Jurczak
Summary: Recognition of anionic species is crucial in various chemical, biological, and environmental processes. Despite progress in the molecular recognition of anions by synthetic receptors, design of receptors for chiral anions lags behind. Chiral recognition requires precise spatial organization and understanding this phenomenon may lead to more efficient receptor design.
Review
Chemistry, Analytical
Gabriele Travagliante, Massimiliano Gaeta, Roberto Purrello, Alessandro D'Urso
Summary: Porphyrinoids are attractive for their electronic, optical, and coordination properties, which allow them to behave as chiroptical hosts for chiral recognition. Research has shown that through various spectroscopic techniques and chiral molecules, chiral discrimination of a multitude of chiral organic guests can be achieved.
Article
Chemistry, Physical
Valentina Migliorati, Paola D'Angelo
Summary: The study found that the low melting points of deep eutectic solvents are related to the anion's ability to build favorable networks of interactions, maximizing hydrogen bonds among all parts of the system.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Frank Balzer, Marvin F. Schumacher, Sara Mattiello, Matthias Schulz, Jennifer Zablocki, Marc Schmidtmann, Klaus Meerholz, N. Serdar Sariciftci, Luca Beverina, Arne Luetzen, Manuela Schiek
Summary: The impact of chiral aggregation in solution processed and thermally annealed thin films of indolenine and anilino squaraines with chiral (S)-citronellyl functionalization was investigated. One of the indolenine squaraines showed a pseudo polymorphic crystal structure, while both compounds in thin films were found to be non-aggregated and isotropic. The circular dichroism correlated with the morphology of the samples, with the CD spectra reinforcing the excitonic nature of the characteristic double hump signatures.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ines Schmidt, Selina Olthof, Hui Xu, Klaus Meerholz
Summary: The use of phosphine oxide ligands such as trioctyl and triphenyl derivatives can significantly improve the optoelectronic properties of metal halide perovskite CsPbBr3, reducing surface defect states and enhancing radiative recombination efficiency.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jorge C. Herrera-Luna, Maria Carmen Perez-Aguilar, Leon Gerken, Olga Garcia Mancheno, M. Consuelo Jimenez, Raul Perez-Ruiz
Summary: A novel method for the formation of carbon-aryl sulfide bonds through electron donor-acceptor (EDA) complexes of alkylamines with 5- and 6-membered (hetero)arene halides under visible light is presented. This method represents the first EDA-based thiolation method that does not rely on pi-pi or a thiolate-anion-pi interactions, providing an easy access to heteroarene radicals, which can be trapped by disulfide derivatives to form versatile arylsulfides. Mechanistic investigations using spectroscopic measurements confirm the formation of the hypothesized EDA complexes, and the strength of this method is demonstrated through gram-scale synthesis of thiolated products and late-stage derivatization of an anticoagulant drug.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Julia Wiefermann, Jeremy M. M. Kaminski, Elisabeth Pankert, Dirk Hertel, Klaus Meerholz, Christel M. M. Marian, Thomas J. J. Mueller
Summary: In this study, we investigated the optoelectronic properties of a previously reported blue emitter. The analysis of the emission spectra in solvents with different polarities indicated charge transfer contributions to the first singlet excited state, S-1. Quantum chemical calculations revealed a balanced local excitation and charge transfer character of the S-1 state, and suggested the presence of a local excitation triplet state, T-2, in its energy vicinity. Finally, organic light emitting diodes exhibited blue emission at 451 nm with an external quantum efficiency of 2% and an internal quantum efficiency of approximately 10%.
Article
Chemistry, Inorganic & Nuclear
Desiree Badea, Selina Olthof, Jorg M. Neudoerfl, Robert Glaum, Rainer Poettgen, Maximilian Kai Reimann, Klaus Meerholz, Max Reimer, Christian Logemann, Erik Strub, Jorn Bruns
Summary: The reaction between ammonium perrhenate and pertechnetate in highly alkaline medium resulted in the formation of isotypic mixed anionic nitridotrioxidorhenate and -technetate potassium salts (K-3[MO4][MO3N], M=Tc, Re). Both compounds are colorless crystals and were characterized by single crystal X-ray diffraction. X-ray photoelectron spectroscopy was employed to determine the oxidation state of rhenium in K-3[ReO4][ReO3N], and magnetic measurements were also performed. The presence of Re-O and Re-N bonds was confirmed by IR and Raman spectroscopy.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Editorial Material
Chemistry, Physical
J. Wiefermann, J. M. Kaminski, E. Pankert, D. Hertel, K. Meerholz, C. M. Marian, T. J. J. Mueller
Summary: In this study, the optoelectronic properties of a previously reported blue emitter were thoroughly investigated. Lippert-Mataga analysis of the emission spectra in different solvents revealed charge transfer contributions to the first singlet excited state, S-1. Quantum chemical calculations showed a balanced local excitation and charge transfer character of the S-1 state, and also suggested the presence of a nearby local excitation triplet state, T-2. Finally, organic light emitting diodes (OLED) demonstrated blue emission at 451 nm with an external quantum efficiency of 2% and an internal quantum efficiency of around 10%.
Article
Chemistry, Multidisciplinary
Julian Full, Martijn J. Wildervanck, Claudia Dillmann, Santosh P. Panchal, Daniel Volland, Felix Full, Klaus Meerholz, Agnieszka Nowak-Krol
Summary: In this paper, we report the synthesis and characterization of configurationally stable singly-truncated (ST) and structurally flexible doubly-truncated (DT) helically chiral compounds derived from azabora[7]helicenes. These compounds exhibit excellent photophysical properties, luminescence quantum yields, and luminescence asymmetry. Furthermore, a methyl complex of azabora[7]helicene was used as a chiral inducer embedded in an emissive polymer to produce circularly polarized organic light emitting diodes.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Physics, Applied
N. Korneev, A. K. Vega Salgado, R. Valencia Yescas, M. Cuatecatl, P. Rodriguez, S. Mansurova, A. Seidenspinner, K. Meerholz
Summary: This study contributes to the development of theoretical and experimental tools for characterizing the transport properties of perovskite semiconductors. By developing a theoretical model and conducting experiments, the critical transport parameters and behavior of charge carriers in perovskite semiconductors were successfully evaluated and predicted. This study is of great importance to the field of perovskite semiconductors.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Jorge C. Herrera-Luna, Till J. B. Zaehringer, Jorge C. Herrera-Luna, M. Consuelo Jimenez, Christoph Kerzig, Raul Perez-Ruiz
Summary: The design and development of new triplet-triplet annihilation upconversion (TTA-UC) systems combining triplet sensitizers with acceptor compounds have attracted considerable interest. Sensitizers made from purely organic dyes rather than transition-metal complexes appear to be more convenient from an environmental point of view. The versatile properties of a new asymmetric BODIPY were demonstrated, showing its suitability as a sensitizer in a bimolecular TTA-UC system. The TTA-UC system showed highly efficient photocatalytic behavior, leading to successful conversion of green to blue light and subsequent activation of aryl chlorides for various chemical reactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Anna J. Kny, Max Reimer, Noah Al-Shamery, Ritu Tomar, Thomas Bredow, Selina Olthof, Dirk Hertel, Klaus Meerholz, Moritz Sokolowski
Summary: Controlling the structure of molecular layers is crucial for the design of organic electronic devices. This study focuses on the growth of merocyanine molecules on a silver substrate and the effects of surface nucleation on the molecular arrangement. It is found that the molecules adsorb in a face-on geometry, forming tetramers with a circular dipole arrangement and self-ordering into large, enantiopure domains.
Article
Biochemistry & Molecular Biology
Enock O. Dare, Temilade F. Akinhanmi, J. A. Aremu, Olayide R. Adetunji, Janet T. Bamgbose, Victoria Vendrell-Criado, M. Consuelo Jimenez, Raul Perez-Ruiz, Sebastian Bonardd, David Diaz Diaz
Summary: A novel dual functional and visual chemosensor, RBS, was successfully synthesized using click chemistry. The results demonstrated that RBS can detect Cu2+ and Zn2+ through fluorescent and colorimetric sensing. The fluorescent emission of RBS was significantly enhanced by 63.3-fold for Cu2+ and 48.3-fold for Zn2+ in acetonitrile solvent, with a detection limit of 3.0 nM. The colorimetric responses were 2.14 x 10(-8) and 4.0 x 10(-8) mol L-1 for Cu2+ and Zn2+, respectively.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)
Article
Polymer Science
Paola Dominguez Dominguez, Sebastian Bonardd, Samuel Martin Koury, Raul Perez-Ruiz, M. Consuelo Jimenez, David Diaz Diaz
Summary: This study demonstrates for the first time that photoreduction of aryl halides can be carried out using a simple and economical set-up based on low-cost laser pointers. The results show that this set-up can achieve comparable yields and mass balances to those obtained with expensive pulsed laser sources, providing a feasible alternative for laboratories with limited resources.
Article
Chemistry, Organic
Faiza Diaba, Gisela Trenchs
Summary: The first violet light-mediated synthesis of gamma- and delta-lactams from N-alkenyl trichloroacetamides is reported in this paper. The reactions are conducted in tetrahydrofuran or 2-methyltetrahydrofuran as the sole solvent without catalysts or additives, under non-anhydrous conditions in an air atmosphere where the solvent serves as the radical initiator.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Tanya Raghava, Anjan Chattopadhyay, Subhadeep Banerjee, Nivedita Sarkar
Summary: Amine substitution of two ortho fluorine atoms of tetrafluoroterephthalonitrile through SNAr chemistry is easily achievable. But further fluorine substitution is only possible under forcing conditions, yielding valuable fluorophores for bioimaging.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Review
Chemistry, Organic
Anju Chadha, Santosh Kumar Padhi, Selvaraj Stella, Sowmyalakshmi Venkataraman, Thangavelu Saravanan
Summary: Alcohol dehydrogenases are enzymes that use cofactors for oxidation or reduction reactions of alcohols or carbonyl compounds. They are utilized in green chemistry and have applications in the production of pharmaceuticals. Recombinant enzymes have solved the challenge of producing purified enzymes in large quantities. Engineered alcohol dehydrogenases have been used in asymmetric synthesis in industry. Various methods have been established for regenerating expensive cofactors to make the enzymatic process more efficient and economically viable.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
