Strategic Insertion of Heavy Atom to Tailor TADF OLED Material for the Development of Type I Photosensitizing Catalytic Red Emissive Assemblies
Chem Asian J. 2024 Feb 25:e202400033. doi: 10.1002/asia.202400033. Online ahead of print.ABSTRACTThe work presented in the manuscript describes a simple strategy for transforming thermally activated delayed fluorescent organic light-emitting diodes (TADF OLEDs) compound 10-(dibenzo[a,c]phenazin-11-yl)-10H-phenoxazine (DPZ-PXZ) into type I photosensitizer 10-(dibenzo[a,c]phenazin-11-yl)-10H-phenothiazine (DPZ-PHZ) by strategically introducing sulfur atom in the photosensitizing core. The synthesized compound DPZ-PHZ exhibits aggregation-induced enhancement (AIE) and through-space charge transfer (TSCT) characteristics and g...
Source: Chemistry, an Asian Journal - February 25, 2024 Category: Chemistry Authors: Manpreet Singh Manoj Kumar Vandana Bhalla Source Type: research
Directionality of Halogen-Bonds: Insights from 2D Energy Decomposition Analysis
Chem Asian J. 2024 Feb 23:e202301106. doi: 10.1002/asia.202301106. Online ahead of print.ABSTRACTHalogen bonds are typically observed to have a linear arrangement with a 180° angle between the nucleophile and the halogen bond acceptor X-R. This linearity is commonly explained using the σ-hole model, although there have been alternative explanations involving exchange repulsion forces. We employ two-dimensional Distortion/Interaction and Energy Decomposition Analysis to examine the archetypal H3 N⋯X2 halogen bond systems. Our results indicate that although halogen bonds are predominantly electrostatic, their directional...
Source: Chemistry, an Asian Journal - February 23, 2024 Category: Chemistry Authors: Barbara Herrmann Dennis Svatunek Source Type: research
Directionality of Halogen-Bonds: Insights from 2D Energy Decomposition Analysis
Chem Asian J. 2024 Feb 23:e202301106. doi: 10.1002/asia.202301106. Online ahead of print.ABSTRACTHalogen bonds are typically observed to have a linear arrangement with a 180° angle between the nucleophile and the halogen bond acceptor X-R. This linearity is commonly explained using the σ-hole model, although there have been alternative explanations involving exchange repulsion forces. We employ two-dimensional Distortion/Interaction and Energy Decomposition Analysis to examine the archetypal H3 N⋯X2 halogen bond systems. Our results indicate that although halogen bonds are predominantly electrostatic, their directional...
Source: Chemistry, an Asian Journal - February 23, 2024 Category: Chemistry Authors: Barbara Herrmann Dennis Svatunek Source Type: research
Direct Through-Space Substituent- π Interactions in Noncovalent Arene-Fullerene Assemblies
Chem Asian J. 2024 Feb 22:e202400075. doi: 10.1002/asia.202400075. Online ahead of print.ABSTRACTThe arene-arene interactions between electron-rich and deficient aromatics have been less understood. Herein, we focus on a [60]fullerene π-surface as an electron-deficient aromatics. Using a 1H signal of H2O@C60 as a magnetic probe, the presence of benzene-fullerene interactions was confirmed. To investigate substituent effects on the noncovalent arene-fullerene interactions, NMR titration experiments were carried out using an open-[60]fullerene and a series of substituted benzenes, i.e., PhX (X = NO2, CN, Cl, OMe, H, CH3, an...
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Yoshifumi Hashikawa Yasujiro Murata Source Type: research
Sodium-Mediated Reductive C-C Bond Cleavage Assisted by Boryl Groups
Chem Asian J. 2024 Feb 22:e202400100. doi: 10.1002/asia.202400100. Online ahead of print.ABSTRACTIn contrast to the well-established oxidative C=C double bond cleavage to give the corresponding carbonyl compounds, little is known about reductive C=C double bond cleavage. Here we report that C-C single bond cleavage in 1,2-diaryl-1,2-diborylethanes proceeds by reduction with sodium metal to yield α-boryl benzylsodium species. In combination with our previous reductive diboration of stilbenes, the overall transformation represents reductive cleavage of the C=C double bonds of stilbene to yield α-boryl-α-sodiated toluenes....
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Mizuki Fukazawa Fumiya Takahashi Takashi Kurogi Hideki Yorimitsu Source Type: research
Visible Light-Induced Metal-free Arylation of Coumarin-3-carboxylates with Arylboronic Acids
This study provides a valuable contribution to the field of organic synthesis offering a new and efficient approach to the arylation of coumarin-3-carboxylic acid esters with a broad substrate scope and high functional group tolerance. It is a versatile method and provides a direct access to biologically relevant 4-arylcoumarin-3-carboxylates.PMID:38386270 | DOI:10.1002/asia.202400042 (Source: Chemistry, an Asian Journal)
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Swarnayu Banik Aita Saikiran Prathyusha Permula K S Srivishnu B Sridhar B V Subba Reddy Source Type: research
Advanced Functionalized Nanoclusters (Cu, Ag, and Au) as Effective Catalyst for Organic Transformation Reactions
Chem Asian J. 2024 Feb 22:e202400062. doi: 10.1002/asia.202400062. Online ahead of print.ABSTRACTA considerable amount of research has been carried out in recent years on synthesizing metal nanoclusters (NCs), which have wide applications in the field of optical materials with non-linear properties, bio-sensing, and catalysis. Aside from being structurally accurate, the atomically precise NCs possess well-defined compositions due to significant tailoring, both at the surface and the core, for certain functionalities. To illustrate the importance of atomically precise metal NCs for catalytic processes, this review emphasize...
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Parveen Kumar Meena Nemiwal Source Type: research
Direct Through-Space Substituent- π Interactions in Noncovalent Arene-Fullerene Assemblies
Chem Asian J. 2024 Feb 22:e202400075. doi: 10.1002/asia.202400075. Online ahead of print.ABSTRACTThe arene-arene interactions between electron-rich and deficient aromatics have been less understood. Herein, we focus on a [60]fullerene π-surface as an electron-deficient aromatics. Using a 1H signal of H2O@C60 as a magnetic probe, the presence of benzene-fullerene interactions was confirmed. To investigate substituent effects on the noncovalent arene-fullerene interactions, NMR titration experiments were carried out using an open-[60]fullerene and a series of substituted benzenes, i.e., PhX (X = NO2, CN, Cl, OMe, H, CH3, an...
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Yoshifumi Hashikawa Yasujiro Murata Source Type: research
Sodium-Mediated Reductive C-C Bond Cleavage Assisted by Boryl Groups
Chem Asian J. 2024 Feb 22:e202400100. doi: 10.1002/asia.202400100. Online ahead of print.ABSTRACTIn contrast to the well-established oxidative C=C double bond cleavage to give the corresponding carbonyl compounds, little is known about reductive C=C double bond cleavage. Here we report that C-C single bond cleavage in 1,2-diaryl-1,2-diborylethanes proceeds by reduction with sodium metal to yield α-boryl benzylsodium species. In combination with our previous reductive diboration of stilbenes, the overall transformation represents reductive cleavage of the C=C double bonds of stilbene to yield α-boryl-α-sodiated toluenes....
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Mizuki Fukazawa Fumiya Takahashi Takashi Kurogi Hideki Yorimitsu Source Type: research
Visible Light-Induced Metal-free Arylation of Coumarin-3-carboxylates with Arylboronic Acids
This study provides a valuable contribution to the field of organic synthesis offering a new and efficient approach to the arylation of coumarin-3-carboxylic acid esters with a broad substrate scope and high functional group tolerance. It is a versatile method and provides a direct access to biologically relevant 4-arylcoumarin-3-carboxylates.PMID:38386270 | DOI:10.1002/asia.202400042 (Source: Chemistry, an Asian Journal)
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Swarnayu Banik Aita Saikiran Prathyusha Permula K S Srivishnu B Sridhar B V Subba Reddy Source Type: research
Advanced Functionalized Nanoclusters (Cu, Ag, and Au) as Effective Catalyst for Organic Transformation Reactions
Chem Asian J. 2024 Feb 22:e202400062. doi: 10.1002/asia.202400062. Online ahead of print.ABSTRACTA considerable amount of research has been carried out in recent years on synthesizing metal nanoclusters (NCs), which have wide applications in the field of optical materials with non-linear properties, bio-sensing, and catalysis. Aside from being structurally accurate, the atomically precise NCs possess well-defined compositions due to significant tailoring, both at the surface and the core, for certain functionalities. To illustrate the importance of atomically precise metal NCs for catalytic processes, this review emphasize...
Source: Chemistry, an Asian Journal - February 22, 2024 Category: Chemistry Authors: Parveen Kumar Meena Nemiwal Source Type: research
An Isolable THF-coordinated Dialkylgermanone
Chem Asian J. 2024 Feb 21:e202400111. doi: 10.1002/asia.202400111. Online ahead of print.ABSTRACTA stable dialkylgermanone was generated by mixing a solid of the corresponding dialkylgermylene and gaseous N2O. While the dialkylgermanone is marginally persistent in solution and gradually converts to its head-to-tail dimer at room temperature, the addition of THF to the dialkylgermanone provided an isolable THF-coordinated dialkylgermanone. The THF-coordinated dialkylgermanone reacts with H2O, THF, and B(C6F5)3 similar to the corresponding base-free two-coordinate dialkylsilanone. The dialkylgermanone undergoes deoxygenation...
Source: Chemistry, an Asian Journal - February 21, 2024 Category: Chemistry Authors: Kazuma Oshima Ryo Kobayashi Kengo Sakamoto Kenji Yoza Shintaro Ishida Takeaki Iwamoto Source Type: research
Alkoxylated Fluoranthene-Fused [3.3.3]Propellanes: Facile Film Formation against High π-Core Content
Chem Asian J. 2024 Feb 21:e202400080. doi: 10.1002/asia.202400080. Online ahead of print.ABSTRACTSolid-state assembling modes are as crucial as the chemical structures of single molecules for real applications. In this work, solid-state structures and phase-transition temperatures are investigated for a series of fluoranthene-fused [3.3.3]propellanes consisting of a rigid three-dimensional (3D) π-core and varying lengths of alkoxy groups. Compounds in this series with n-butoxy or longer alkoxy groups take an amorphous state at room temperature. In these molecules, rotatable biaryl-type bonds are not incorporated and high ...
Source: Chemistry, an Asian Journal - February 21, 2024 Category: Chemistry Authors: Kenichi Kato Yuta Uchida Tomoya Kaneda Tomoki Tachibana Shunsuke Ohtani Tomoki Ogoshi Source Type: research
Zinc Doping Induces Enhanced Thermoelectric Performance of Solvothermal SnTe
This study underscores the effectiveness of incorporating ZnTe nanoprecipitates in boosting the thermoelectric performance of SnTe-based materials.PMID:38380867 | DOI:10.1002/asia.202400130 (Source: Chemistry, an Asian Journal)
Source: Chemistry, an Asian Journal - February 21, 2024 Category: Chemistry Authors: Lijun Wang Xiao-Lei Shi Lvzhou Li Min Hong Bencai Lin Pengcheng Miao Jianning Ding Ningyi Yuan Shuqi Zheng Zhi-Gang Chen Source Type: research
Solid-State Emissive Pillar[6]arene Derivatives Having Alternate Methylene and Nitrogen Bridges
Chem Asian J. 2024 Feb 21:e202400106. doi: 10.1002/asia.202400106. Online ahead of print.ABSTRACTMacrocyclic arenes show conformational adaptability, which allows host-guest complexations with the size-matched guest molecules. However, their emission properties are often poor in the solid states due to the self-absorption. Herein, we newly synthesized pillar[6]arene derivatives having alternate methylene and nitrogen bridging structures. Solvatochromic study reveals that the nitrogen-embedding into the cyclic structures can strengthen the intramolecular charge transfer (CT) nature compared to that of the linear nitrogen-br...
Source: Chemistry, an Asian Journal - February 21, 2024 Category: Chemistry Authors: Shunsuke Ohtani Kazeto Nakaguchi Kenichi Kato Tomoki Ogoshi Source Type: research
