Review
Chemistry, Multidisciplinary
Beijia Chen, Frieder Jaekle
Summary: This Minireview provides an overview of the advances in the use of Lewis pairs for assembly of functional materials, including reversible polymers, molecular cages, covalent organic frameworks, and soft polymer networks.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Pradip A. Gaikwad, Prodipta Samadder, Shubham Som, Deepak Chopra, Prakash P. Neelakandan, Aasheesh Srivastava
Summary: Researchers have successfully converted a polymorphic organoboron compound into two unique nanomorphologies using water-induced self-assembly. These nanomaterials show excellent optical performance and have great potential for practical applications.
Article
Chemistry, Multidisciplinary
Lucas Kistner, Dario Kowatsch, Andreas Marz, Elisabeth Kaifer, Hans-Joerg Himmel
Summary: The chemistry of dicationic diboranes with direct B-B bonding is largely unexplored. In this work, stable unsymmetric dicationic diboranes were synthesized by reacting an electron-rich ditriflato-diborane with phosphino-pyridines, forming B-N and B-P bonds. The formation of one of the compounds required several days at ambient conditions, creating an intermediate for frustrated Lewis pair (FLP)-like chemistry.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Karel Skoch, Constantin G. Daniliuc, Gerald Kehr, Gerhard Erker
Summary: The compound undergoes a rare reaction with a borane to form a unique unsaturated compound, capable of reducing carbon monoxide and reacting with nitriles to produce a boron-containing heterocycle derivative.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Li-Ying Liu, Hong-Chang Huang, Chu-Wen Chen, Fu-Li Hsiao, Yu-Chieh Cheng, Chii-Chang Chen
Summary: In this work, we theoretically investigate a reflective polarization rotator in a silicon waveguide formed by periodically arranged air holes. By etching the air holes, the waveguide generates large birefringence, while the non-etched waveguide has isotropic refractive index. The structure can be considered as a stack of alternating birefringent waveplates and isotropic material. The high reflection peaks in the reflection spectra of the waveguide result from the photonic bandgap, as confirmed by calculating the band structure. The device exhibits high reflectivity, wide operation bandwidth, and good polarization extinction ratio.
Review
Chemistry, Multidisciplinary
Pallavi Sarkar, Shubhajit Das, Swapan K. Pati
Summary: This article summarizes the progress in the study of non-boron Lewis acids since 2015, which are an important component of Frustrated Lewis pairs.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zongshang Li, Ke Xiao, Qingyun Wan, Rui Tang, Kam-Hung Low, Xiaodong Cui, Chi-Ming Che
Summary: The introduction of multiple kinetic aggregation states (Aggs) into the self-assembly pathway can increase the complexity and flexibility of the self-assemblies. This was achieved by using a series of chiral and achiral d(10) Au-I bis(N-heterocyclic carbene, NHC) complexes, where the achiral complex could undergo self-assembly with multiple kinetic Aggs. The chiral Au-I self-assemblies exhibited nonlinear optical response of second harmonic generation (SHG) and could function as optical waveguides with strong emission polarization, while these properties were absent in the achiral analogue.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Hermann Neitz, Irene Bessi, Valentin Kachler, Manuela Michel, Claudia Hoebartner
Summary: This study demonstrates the use of tolane-perfluorotolane interaction as a base pair replacement in DNA by modifying the DNA backbone. Thermodynamic analyses show that only THH/TFF heteropairs connected to the BuNA backbone significantly stabilize the DNA duplex, while no such effect is observed with the shorter GNA linker. NMR studies confirm the preference of the BuNA backbone for enhanced polar pi-stacking. This work defines the principles of tailoring orthogonal supramolecular interactions by small structural changes in the DNA backbone and inspires future studies of arene-fluoroarene-programmed assembly of DNA.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Ryo Oshimizu, Naoki Ando, Shigehiro Yamaguchi
Summary: In this study, the weak interaction between olefin-borane pi-complexes and frustrated Lewis pairs (FLP) was utilized to modulate the electronic properties of boron-based pi-electron materials. By adding Lewis bases, FLP-type addition reactions occurred, leading to significant changes in the absorption and emission properties of the fluorophores. These findings offer a design strategy for stimuli-responsive emissive boron-based materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Fu-Li Hsiao, Chia-Ying Ni, Ying-Pin Tsai, Ting-Wei Chiang, Yen-Tung Yang, Cheng-Jui Fan, Hsuan-Ming Chang, Chien-Chung Chen, Hsin-Feng Lee, Bor-Shyh Lin, Kai-Chun Chan, Chii-Chang Chen
Summary: Photonic crystals with unique dispersion relation can be used to design miniaturized optical components for quantum computing. A half-waveplate element with a photonic crystal is designed to rotate the polarization direction of incident light on a waveguide. The polarization rotation length and the optical axis's angle can be effectively calculated using the dispersion relation of photonic crystals. Polarization rotators designed based on photonic crystal structures exhibit low insertion loss and favorable polarization rotation performance.
Article
Chemistry, Physical
Liyang Fu, Yanxue Che, Yanjun Gong, Hongwei Ji, Yifan Zhang, Ling Zang, Jincai Zhao, Yanke Che
Summary: We report a tunable 2D living self-assembly method for controlling the geometric shape variety and mechanical properties of uniform 2D platelets. The approach involves using n-alkyl alcohols to form a 2D network via hydrogen bonding, resulting in three effects: maintaining the same optical properties and thermal stability, generating alcohol-dependent 2D shape variety, and varying the mechanical properties through the interactions of different alcohol tail lengths.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mukundam Vanga, Ashutosh Sahoo, Roger A. Lalancette, Frieder Jakle
Summary: The functionalization of polycyclic aromatic hydrocarbons via B <- N Lewis pair formation allows for the synthesis of a variety of compounds with advantageous properties, such as fluorinated derivatives showing lower HOMO and LUMO levels, strong fluorescence, and effective singlet oxygen sensitization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Siqi Zhang, Jianqiao Li, Linlin Gan, Lin Ma, Wei Ma, Min Zhang, Faliang Cheng, Ke Deng, Qingdao Zeng
Summary: The supramolecular self-assembly behavior of low-symmetry tetracarboxylic acid molecules (H4OBDB and H(4)ADDI) and their co-assembly behavior with TMA as a bridging molecule were studied using scanning tunneling microscope. The results showed that H4OBDB and H(4)ADDI molecules tend to form O-shaped dimers but end up forming different types of self-assembly structures. Mixing H4OBDB or H(4)ADDI molecules with bridging molecules like TMA resulted in similar two-component co-assembly structures.
Article
Chemistry, Multidisciplinary
Pinaki Nad, Arup Mukherjee
Summary: A metal-free and sustainable method has been developed for the reduction of unprotected indoles. The catalytic system, consisting of B(C6F5)3 and THF as a Lewis acid-base pair, can activate the B-H bond of pincolborane. The catalytic system shows a broad substrate scope. Control experiments were conducted to understand the possible catalytic intermediates involved.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Svitlana Shishkina, Yevhenii A. Vaksler, Irina S. Konovalova, Victoriya V. Dyakonenko, Victoriya V. Varchenko
Summary: Three polymorphic structures of mefenamic acid were studied using quantum chemical methods. It was found that a centrosymmetric dimer formed by two hydrogen bonds is present in all of the polymorphic structures. Analysis of the interaction energies revealed that polymorphic forms I and II are columnar-layered while form III has a columnar structure. The stabilities of the three polymorphic forms correlate with the degree of anisotropy of the interaction energies between columns.
Review
Materials Science, Multidisciplinary
Zhenhong Qi, Bo Zhou, Dongpeng Yan
Summary: This review systematically summarizes the recent development of molecule-based micro/nanocrystal heterojunctions (MMHs), including basic concepts, materials classification, preparation methods, and representative photonic applications. The review highlights the current challenges and future trends in this field, providing new ideas and guidance for expanding the understanding and promoting the evolution of MMHs for advanced optical applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xiaoyu Fang, Yanqun Tang, Yu-Juan Ma, Guowei Xiao, Pengyan Li, Dongpeng Yan
Summary: This work utilizes ultralong-lived triplet excitons to promote the separation of electron-hole pairs and achieve efficient transformation from excitons to carriers. By dispersing room temperature phosphorescent carbon dots onto g-C3N4, the photocatalytic and electrochemical activities are significantly enhanced. Experimental and theoretical calculations demonstrate that the ultralong-lived triplet excitons serve as an energy sustained-release mechanism, effectively improving the photocatalytic performance.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yu-Juan Ma, Guowei Xiao, Xiaoyu Fang, Tianhong Chen, Dongpeng Yan
Summary: This study reports an approach to leverage crystalline and amorphous states of a zero-dimensional metal-organic complex for the first time. The complex exhibits negative and positive photochromism due to the competitive chemical routes between photocycloaddition and photogenerated radicals. Different polymorphs lead to the on/off toggling of photo-burst movement, indicating controllable light-mechanical conversion. Three demos were constructed to support their application in information encryption and anti-counterfeiting. This work provides a proof-of-concept for a state- and polymorph-dependent photochemical route, paving an effective way for the design of new dynamically responsive systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Ying Mu, Fang-Yuan Cao, Xiao-Yu Fang, Zhong-Xin Liu, Jun-Qing Wang, Song-De Han, Jie Pan, Qi Wei, Jin-Hua Li, Guo-Ming Wang
Summary: This study reports two Zn(II)-based organic coordination polymers that exhibit continuously tunable phosphorescence in multiple colors at room temperature by adjusting the excitation energy. These polymers have potential applications in anti-counterfeiting, display technology, and biomarkers. The unique photoluminescence behavior is induced by the selective formation and decay of multiple triplet excited states in the coordination network based on different excitations. The stabilization of the triplet excitons is achieved through the heavy atom effect of Br- ions and the restriction of molecular motion by crystallization.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Bo Zhou, Dongpeng Yan
Summary: Excited-state tuning of luminescent metal-organic compounds has advanced applications in various fields. However, the luminescence lifetimes of these compounds are still limited due to the competition between luminous efficiency and lifetime. This review summarizes recent developments in realizing room-temperature phosphorescence and thermally activated delayed fluorescence, and discusses fundamental materials design, coordination assembly, and factors influencing luminescence properties.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fei Nie, Dongpeng Yan
Summary: This study reports a facile bottom-up solution fabrication process to obtain metal-free supramolecular glasses (SMGs) at the macroscopic scale using L-Histidine and hexamethylenetetramine as building blocks. The chiral SMGs possess color-tunable ultralong room temperature phosphorescence (decay lifetime up to 141.2 ms) and circular polarized luminescence (g factor up to 8.7x10(-3)). The strong hydrogen bonds effectively drive the formation of SMGs, and provide a rigid microenvironment to boost triplet exciton generation. Applications including multicolored displays, visual UV detection, and persistently luminescent thermometer are demonstrated based on the excitation- and temperature-dependent ultralong phosphorescence of the SMGs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Green & Sustainable Science & Technology
Muhammad Asim Mushtaq, Muhammad Arif, Ghulam Yasin, Mohammad Tabish, Anuj Kumar, Shumaila Ibraheem, Wen Ye, Saira Ajmal, Jie Zhao, Pengyan Li, Jianfang Liu, Ali Saad, Xiaoyu Fang, Xingke Cai, Shengfu Ji, Dongpeng Yan
Summary: Ammonia (NH3) is essential for fertilizer production and serves as a sustainable energy carrier and zero-carbon fuel. However, the current production process is unsustainable and energy-intensive. Electrochemical nitrogen reduction reactions (NRR) are promising alternatives, but still face challenges such as low Faraday efficiency and NH3 yields. This review summarizes the progress and strategies of various NRR electrocatalysts, and emphasizes the need for collaboration between theoretical and experimental studies, advanced characterization techniques, and understanding of the electrocatalytic mechanism for further development.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Multidisciplinary Sciences
Fei Nie, Ke-Zhi Wang, Dongpeng Yan
Summary: In this study, the authors report supramolecular glasses based on self-assembled chiral metal-organic complexes with color-tunable circularly polarized afterglow. These materials can achieve multicolored circularly polarized emissions and have potential applications in optical displays and information storage. The research provides a method for the macroscopic self-assembly of chiral metal-organic hybrids and offers supramolecular glasses with wide-tunable afterglow and large circular polarization.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jingyi Lai, Bo Zhou, Ke-Zhi Wang, Dongpeng Yan
Summary: In this work, a series of layered double hydroxide (LDHs) nanosheets with red long-afterglow were fabricated by utilizing highly efficient triplet-triplet energy transfer. The Zn-based LDHs@RhB composite exhibited an energy transfer efficiency as high as 95.18% and could even generate red long-afterglow under white-light irradiation. Therefore, the LDHs@RhB composites show great potential in the fields of anticounterfeiting and information encryption.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhenhong Qi, Yu-Juan Ma, Dongpeng Yan
Summary: This study reports a novel alloy strategy based on molecular co-crystals, in which three types of molecular co-crystal alloys (MCAs) are prepared by adjusting the molar ratio of pyrene and fluorathene. These MCAs exhibit tunable full-spectra emission color in the visible region and can be used for low optical loss waveguide and optical logic gate in advanced photonics applications.
Article
Chemistry, Multidisciplinary
Guowei Xiao, Yu-Juan Ma, Xiaoyu Fang, Changhai Xu, Dongpeng Yan
Summary: A reversible CO2-responsive luminescent material was created using a simple hydrogen-bond self-assembly of a two-component ionic crystal. The modification of CO2 not only changes the green afterglow, but also gives the material inverse excitation wavelength dependence for multicolor emission.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Pengyan Li, Yumin Liu, Muhammad Asim Mushtaq, Dongpeng Yan
Summary: Photoelectrocatalytic (PEC) ammonia synthesis is a promising method for energy development and N-neutralization under mild conditions. However, the mechanisms underlying the synergistic effect between light and electricity are still challenging. This review focuses on improving the performance of PEC catalysts and provides a systematic description of driven bias in PEC ammonia processes. Various strategies for fabricating new catalysts and the performance and mechanism of PEC N2 reduction are discussed. The current challenges and future prospects of PEC ammonia synthesis are also highlighted.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Multidisciplinary Sciences
Yuhang Lin, Shuya Liu, Dongpeng Yan
Summary: This study successfully constructed organic metal halide crystal heterojunctions with high elasticity and low optical waveguide loss, expanding the application prospects of traditional luminescent materials in smart optical devices.
Article
Materials Science, Multidisciplinary
Yumin Liu, Yujuan Ma, Xiaoyu Fang, Tianhong Chen, Fei Nie, Dongpeng Yan
Summary: Room temperature phosphorescence (RTP) from molecular crystals has potential applications in human lives. In this study, two hydrated polymorphic co-crystals were developed with tautomeric 2-amino-6-methyl-1,4-dihydropyrimidin-4-one (AHMP) and saccharin as building blocks, showing bright ultralong phosphorescence. The different photoluminescence properties of the two polymorphs can be tuned through changes in chemical structure and solid state packing. The research reveals the vital contribution of spin-vibronic coupling to their persistent luminescence and the significance of spin-orbital coupling in achieving long RTP.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)