Article
Chemistry, Organic
Dario Schmid, Tian-Ren Li, Bernd Goldfuss, Konrad Tiefenbacher
Summary: There has been an increased interest in applying supramolecular capsule and cage catalysis to synthetic organic chemistry in the past decade. Recently, a resorcin[4]arene capsule was used as a catalyst to convert alpha-glycosyl halides into beta-glycosides with high selectivity. The reaction was found to be enabled by a proton wire, and a detailed investigation of various aspects of the reactivity was conducted.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Organic
Suren J. Nemat, Konrad Tiefenbacher
Summary: Three novel thiol-bearing resorcin[4]arene and pyrogallol[4]arene derivatives were synthesized and studied for their properties in self-assembly, disulfide chemistry, and Bronsted acid catalysis. The findings showed that one compound could form a hexameric hydrogen bond-based capsule in self-assembly, another compound could be covalently linked through disulfides, and the increased acidity of aromatic thio-substituent was not sufficient to replace HCl as a cocatalyst for capsule-catalyzed terpene cyclizations.
Review
Chemistry, Inorganic & Nuclear
Shinnosuke Horiuchi, Mikihiro Hayashi, Keisuke Umakoshi
Summary: Molecular recognition of guest molecules in a confined cavity plays an important role in biological and artificial molecular systems. Resorcin[4]arene-based supramolecular hosts provide internal cavities that can accommodate coordination complexes, leading to the modulation of chemical and physical properties of the guests. By carefully selecting the host and guest complexes, a new supramolecular system can be created with unique structures and properties derived from the trapped coordination complexes.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Monika Chwastek, Piotr Cmoch, Agnieszka Szumna
Summary: Spatial sequestration of molecules is essential for the complexity of biological systems, and chemists have created artificial nanocontainers to mimic this concept and apply it in various fields. In this study, large closed-shell species were formed by interactions between polyphenolic macrocycles and anions, resulting in even larger capsular structures. This self-assembly is effective in nonpolar solvents, but requires initiation by mechanochemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biochemical Research Methods
Ivan Cornu, Leonidas-Dimitrios Syntrivanis, Konrad Tiefenbacher
Summary: The tail-to-head terpene cyclization is a biochemical process that is widely seen in nature and is used to synthesize terpene natural products. By using an artificial enzyme mimic, this process can be simulated and various complex terpene natural products can be synthesized by carefully controlling the reaction conditions.
Article
Chemistry, Inorganic & Nuclear
Jin-Hua Liu, Qiu-Tong Shen, Jin Yang, Ming-Yue Yu, Jian-Fang Ma
Summary: Two new polyoxometalate-templated metal-organic frameworks were successfully synthesized using a bowl-like tetra(benzimidazole)resorcin[4]arene ligand. An innovative method to enhance conductivity was proposed by loading the samples onto a polypyrrole-reduced graphene oxide composite. The resulting composites showed improved electrochemical performance in lithium-ion batteries, highlighting the potential of these functional materials in energy applications.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Daria Sokolova, GiovanniMaria Piccini, Konrad Tiefenbacher
Summary: This study presents the first examples of optically active hexameric resorcin[4]arene capsules and demonstrates the possibility of chirality transfer inside a relatively large molecular container. These capsules are able to enantioselectively catalyze tail-to-head terpene cyclizations and exhibit surprisingly high sensitivity to structural modifications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Shushan Yuan, Gang Zhang, Junyong Zhu, Jie Yang, Suilin Liu, Bart Van der Bruggen
Summary: The study synthesized membranes based on entirely resorcin[4]arene (RA) macrocycles, with the membrane from RA-3R at a concentration of 0.73 wt% showing the optimal nanofiltration (NF) performance, achieving a water permeability of 26.2 L m(-2) h(-1) bar(-1) and maintaining 95.6% rejection of Na2SO4.
Article
Chemistry, Physical
Nicolas Espitia-Galindo, David J. Hernandez, Jhon Zapata-Rivera, Edgar F. Vargas
Summary: The formation of a host-guest complex between ionic resorcinarene and sodium sulfamerazine was investigated using experimental and computational techniques. The complex was characterized and the computational studies revealed the favorable Gibbs free energy of different orientations of sodium sulfamerazine with the resorcinarene. The results showed that the complex had stronger association than those with beta-CD, indicating the selectivity of resorcinarene towards sodium sulfamerazine.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Fei-Fei Wang, Jia-Hui Li, Hai-Yan Liu, Shu-Ping Deng, Ying-Ying Liu, Jian-Fang Ma
Summary: Three distinctive coordination polymers were solvothermally synthesized using a resorcin[4]arene ligand. Among them, compound 1 showed efficient and selective catalytic performance, and could be recycled with preservation of its catalytic capability and structural integrity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Suren J. Nemat, Dietger Van den Eynden, Loren Deblock, Michael Heilmann, Jesper M. Koester, Mahsa Parvizian, Konrad Tiefenbacher, Jonathan De Roo
Summary: Two resorcin[4]arene scaffolds with four phosphate binding groups were designed and synthesized, showing superior binding affinity compared to single phosphonates at low surface coverage, as demonstrated by solution NMR spectroscopy.
CHEMICAL COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Bing -Bing Lu, Zhi-Xin Xing, Yong-Shun Bao, Fei Ye, Ying Fu
Summary: In this study, a new resorcin[4]arene-based metal-organic framework was synthesized and utilized for luminescent detection of herbicides. The metal-organic framework exhibited excellent stability and showed significant enhancement or decrease in luminescence intensity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Mamina Bhol, Guilhem Claude, Maximilian Roca Jungfer, Ulrich Abram, Malaichamy Sathiyendiran
Summary: In this study, calix[4]arene-analogous technetium supramolecules and rhenium-based macrocycles were successfully assembled by using specific ligands and starting materials. The structures of these molecules were characterized in detail.
INORGANIC CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Bing-Bing Lu, Xue-Ying Chen, Cheng-Jie Feng, Jian Chang, Fei Ye
Summary: Metal-organic framework (MOF)-supported palladium nanoparticles (NPs) were successfully confined in a MOF structure, resulting in a highly efficient catalyst with sustained activity even after multiple cycles of reuse.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Ming-Yue Yu, Jin-Hua Liu, Jin Yang, Jian-Fang Ma
Summary: Polyoxometalates (POMs) are utilized as alternative anode materials for lithium ion batteries (LIBs) due to their reversible electrochemical redox behaviors and electron storage functions. Embedding POMs into metal-organic hybrid complexes can enhance their conductivity and stability, and composite materials with graphene oxide show high initial specific capacity and stability for LIBs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Tomoko Haraga, Kazuki Ouchi, Yoshiyuki Sato, Hitoshi Hoshino, Rei Tanaka, Takashi Fujihara, Hideki Kurokawa, Masami Shibukawa, Ken-ichiro Ishimori, Yutaka Kameo, Shingo Saito
ANALYTICA CHIMICA ACTA
(2018)
Article
Chemistry, Inorganic & Nuclear
Zentaro Honda, Naoyuki Nomoto, Takashi Fujihara, Masayuki Hagiwara, Takanori Kida, Yuya Sawada, Takeshi Fukuda, Norihiko Kamata
SOLID STATE SCIENCES
(2018)
Article
Chemistry, Multidisciplinary
Tomoaki Sugaya, Takashi Fujihara, Takashi Naka, Takao Furubayashi, Akiyuki Matsushita, Hiroaki Isago, Akira Nagasawa
CHEMISTRY-A EUROPEAN JOURNAL
(2018)
Article
Chemistry, Inorganic & Nuclear
Keiji Ohno, Yukiko Kusano, Sumio Kaizaki, Akira Nagasawa, Takashi Fujihara
INORGANIC CHEMISTRY
(2018)
Article
Chemistry, Inorganic & Nuclear
Toshiyuki Takayanagi, Kohei Saito, Haruya Suzuki, Yuya Watabe, Takashi Fujiharae
Article
Chemistry, Multidisciplinary
Kohei Saito, Yuya Watabe, Takashi Fujihara, Toshiyuki Takayanagi, Jun-ya Hasegawa
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2020)
Article
Chemistry, Organic
Yota Suzuki, Ayumi Ikeda, Keiji Ohno, Takashi Fujihara, Tomoaki Sugaya, Koji Ishihara
JOURNAL OF ORGANIC CHEMISTRY
(2020)
Article
Chemistry, Applied
Keiji Ohno, Fuka Narita, Hidehisa Yokobori, Nanami Iiduka, Tomoaki Sugaya, Akira Nagasawa, Takashi Fujihara
Summary: The luminescence properties of novel boron difluoride complexes with flavonolates were investigated, showing that electronic and steric factors of the substituents influence emission intensity and maximum wavelength. The findings suggest that a twisted π-system can cause quenching of emission.
Article
Chemistry, Inorganic & Nuclear
Keiji Ohno, Kazuki Shiraishi, Tomoaki Sugaya, Akira Nagasawa, Takashi Fujihara
Summary: The synthesis, isomerization, and photophysical properties of a series of novel cis-N,N-cyclometalated complexes [Pt(C^N)(L-Phe)] were reported. The isomerization process from cis to trans forms did not significantly affect the absorption and luminescence properties in solution, except for a characteristic absorption peak observed for cis complexes. Interestingly, the cis complexes showed different absorption and emission colors in a crystalline phase compared to the trans isomers in an amorphous phase, indicating potential applications in optoelectronic devices.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Tatsuhiro Murakami, Naoki Matsumoto, Toshiyuki Takayanagi, Takashi Fujihara
Summary: The reaction mechanism of [2 + 2 + 2] cyclotrimerization of acetylenes catalyzed by transition metal compounds involves the formation of a metallacyclopentadiene intermediate through the coupling of two acetylenes followed by a [4 + 2] cycloaddition. Quantum chemical calculations demonstrate that Fe + -L-type compounds can catalyze acetylene cyclotrimerization through a concerted single-step mechanism. Trajectory calculations confirm the efficient formation of benzene through this mechanism, although some trajectories lead to the formation of intermediates instead of benzene. The research highlights the role of nuclear dynamics and ligand molecules in determining the reaction mechanism.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Keiji Ohno, Masaya Komuro, Tomoaki Sugaya, Akira Nagasawa, Takashi Fujihara
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Multidisciplinary
Ryuhei Nishiyabu, Yuki Takahashi, Taro Yabuki, Shoji Gommori, Yuki Yamamoto, Hiroaki Kitagishi, Yuji Kubo
Article
Chemistry, Inorganic & Nuclear
Keiji Ohno, Tetuya Sakata, Machi Shiiba, Akira Nagasawa, Takashi Fujihara
DALTON TRANSACTIONS
(2019)
Article
Crystallography
Keiji Ohno, Takumi Yoshida, Akira Nagasawa, Takashi Fujihara
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Yuki Kobayashi, Yu Kojima, Ryotaro Miki, Toshinobu Seki, Takashi Fujihara, Yoshihiro Ishimaru, Yuya Egawa
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
(2018)
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)
