Article
Chemistry, Multidisciplinary
Roelof Steeno, Andrea Minoia, Roberto Lazzaroni, Kunal S. Mali, Steven De Feyter
Summary: Nanoscopic lateral confinement on a graphite surface allows for the study of embryonic stages of molecular self-assembly on solid surfaces using scanning tunneling microscopy at the solution/solid interface.
CHEMICAL COMMUNICATIONS
(2022)
Review
Agriculture, Multidisciplinary
Wenjie Li, Weiwei Xu, Siyun Zhang, Jia Li, Juan Zhou, Demei Tian, Jing Cheng, Haibing Li
Summary: Significant progress has been made in the research on drug encapsulation and release based on supramolecular macrocycles, laying a solid foundation for the development of novel nanopesticide preparations.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Review
Chemistry, Inorganic & Nuclear
Xi Yang, Di Yuan, Jinhong Hou, Adam C. Sedgwick, Suying Xu, Tony D. James, Leyu Wang
Summary: The field of supramolecular chemistry has rapidly expanded and become highly influential in various areas like biomedicine, energy materials, catalysis, and sensing. The combination of host/guest chemistry with functional inorganic nanoparticles has led to many new applications in drug delivery, bioimaging, and sensing. Recent progress in the development of organic/inorganic supramolecular nano-systems incorporating host/guest chemistry has been summarized, highlighting their applications in drug delivery, biological imaging, and sensing.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Mingyang Zhang, Hao Zhang, Lunqiang Jin, Hao Li, Simin Liu, Shuai Chang, Feng Liang
Summary: Enhanced guest-pair interactions in the CB[8] cavity were quantitatively determined using SMFS, showing how dynamic conformational changes can affect the rupture force of CB[8]-mediated heteroternary complexation. SMFS was also utilized for detecting methyl viologen based on competitive host-guest interactions in CB[8] or CB[7.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Raghu Pradeep Narayanan, Abhay Prasad, Alex Buchberger, Lei Zou, Julio Bernal-Chanchavac, Tara Macculloch, Nour Eddine Fahmi, Hao Yan, Fei Zhang, Matthew J. Webber, Nicholas Stephanopoulos
Summary: The combination of multiple orthogonal interactions enables hierarchical complexity in self-assembled nanoscale materials. This study demonstrates the efficient supramolecular polymerization of DNA origami nanostructures using a multivalent display of small molecule host-guest interactions, and exploits high-affinity CB[7]-adamantane interactions to enable responsive enzymatic actuation.
Article
Chemistry, Applied
Meng-Qi Wang, Qian Wang, Meng Chen, Da-Hui Qu
Summary: The study successfully fabricated a supramolecular luminescence system with tunable fluorescence emissions ranging from yellow to green by assembling a simple fluorescent molecule, 4-(pyren-1-yl)-1-(4-vinylbenzyl)pyridin-1-ium chloride (PPD), and cucurbit[n]uril (CB[n], n = 7, 8) via host-guest interactions. This system exhibited enhanced emission efficiency and longer fluorescence lifetime, making it suitable for applications in fluorescent ink and potential for information encryption materials.
Review
Chemistry, Multidisciplinary
Takehiro Hirao, Takeharu Haino
Summary: This review introduces the research directions for the synthesis of supramolecular fullerene polymers, including the linear, networked, helical arrays directed by the use of calix[5]arene-fullerene interactions, and the investigation of the calix[5]arene-fullerene interaction for control over the chain structures of covalent polymers.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Weibin Yu, Feng-Yi Qiu, Shi-Ting Luo, Hua-Tian Shi, Guozan Yuan, Xianwen Wei
Summary: Researchers have successfully constructed a triply interlocked [2]catenane with confirmed solid-state structure and solution properties, showing potential applications in drug delivery systems.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Gui-Yuan Wu, Chao Liang, Yi-Xiong Hu, Xu-Qing Wang, Guang-Qiang Yin, Zhou Lu
Summary: In this study, a discrete rhomboidal metallacycle R was successfully synthesized and a new family of cross-linked supramolecular polymers was formed by reacting a bis-[2]pseudorotaxane metallacycle with a bis-pillar[5]arene. These polymers exhibited interesting redox-responsive properties, with weight-average diffusion coefficients D adjusted by changing the redox state of the Cu(i)/Cu(ii) complexes.
Article
Chemistry, Multidisciplinary
Dan-Ni Yan, Li-Xuan Cai, Shao-Jun Hu, Yan-Fang Zhou, Li-Peng Zhou, Qing-Fu Sun
Summary: The adaptive self-assembly and host-guest catalysis of a new water-soluble organo-palladium host are reported. The host undergoes conformational changes upon guest binding, allowing for efficient and selective catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Mark D. Smith, Radu F. Semeniuc
Summary: This study describes the synthesis and characterization of an anthraquinone-based dialkynyl ligand and its coordination to Au(I) centers to form a negatively charged tetraalkynyldigold macrocycle. X-ray diffraction studies reveal the crystal structures of the compounds and their supramolecular arrangements. The macrocycle demonstrates potential as a host for positively charged species.
Article
Polymer Science
Amy C. Madl, David Myung
Summary: Over 6.2 million people worldwide suffer from moderate to severe vision loss due to corneal disease. While transplantation with allogenic donor tissue is sight-restoring for many patients with corneal blindness, this treatment modality is limited by long waiting lists and high rejection rates. Host-guest interactions have emerged as an important crosslinking strategy for cytocompatible, minimally invasive, injectable tissue substitutes.
Article
Chemistry, Multidisciplinary
Ruowen Tang, Yanpeng Ye, Shajun Zhu, Yang Wang, Bing Lu, Yong Yao
Summary: This article systematically investigates the strategies for synthesizing and functionalizing pillar[6]arenes, and describes their host-guest properties and applications in various fields.
CHINESE CHEMICAL LETTERS
(2023)
Review
Chemistry, Inorganic & Nuclear
Shunsuke Ohtani, Kenichi Kato, Shixin Fa, Tomoki Ogoshi
Summary: Pillar[n]arenes, a new type of pillar-shaped host molecule, exhibit versatile and unique host-guest behaviors in host-guest chemistry. Solid-state host-guest complexation offers advantages such as cavity-size dependency, efficient complexation, and easy isolation and reuse. This review discusses recent developments in solid-state host-guest complexation using crystalline pillar[n]arenes, networks containing pillar[n]arenes, pillar[n]arene-assembled surfaces, and solid-state organic polymers.
COORDINATION CHEMISTRY REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
Guotai Li, Reece W. Lewis, Rienk Eelkema
Summary: This article reviews the progress in using out-of-equilibrium processes to regulate host-guest interactions in the field of supramolecular chemistry. The shared strategies are summarized and representative publications are classified based on the modulated component. By studying the design of out-of-equilibrium systems, valuable insights into the preparation strategies for transient materials can be gained.
Article
Chemistry, Multidisciplinary
Lok-Kwan Li, Cathay Chai Au-Yeung, Man-Chung Tang, Shiu-Lun Lai, Wai-Lung Cheung, Maggie Ng, Mei-Yee Chan, Vivian Wing-Wah Yam
Summary: A new class of yellow- to red-emitting carbazolylgold(iii) complexes with high photoluminescence quantum yields has been designed and synthesized, showing improved operational lifetimes in organic light-emitting devices. This work provides insights into the development of robust and highly luminescent gold(iii) complexes and stable molecular motifs for designing efficient emitters.
MATERIALS HORIZONS
(2022)
Correction
Nanoscience & Nanotechnology
Chuangjun Liu, Lihua Zhou, Fangfang Wei, Ling Li, Shunan Zhao, Ping Gong, Lintao Cai, Keith Man-Chung Wong
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Jenny Yuk-Wa Yeung, Fred Ka-Wai Kong, Franky Ka-Wah Hau, Michael Ho-Yeung Chan, Maggie Ng, Ming-Yi Leung, Vivian Wing-Wah Yam
Summary: A series of platinum(II) calix[4]arene-based molecular tweezers were synthesized, and their host-guest association with a charge-neutral cyclometalated platinum(II) complex was studied. The experiments showed that changing the solvent composition could control the assembly process, resulting in the formation of high-ordered host-guest oligomers. The change in assembly behaviors could be detected through drastic color changes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Chi-Ho Lam, Wai Kit Tang, Vivian Wing-Wah Yam
Summary: In this study, a novel tetranuclear copper(I) complex was designed and synthesized, which exhibited intense and long-lived phosphorescence in the solid and solution states. The complex showed strong reducing power in the excited state, as demonstrated by oxidative quenching studies. Additionally, the transient absorption difference spectrum analysis revealed characteristic absorption and intervalence charge-transfer transitions in the complex.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Tony Ho-Ching Fung, Maggie Ng, Nathan Man-Wai Wu, Vivian Wing-Wah Yam
Summary: A series of cyclometalated platinum(II) complexes with a dithienylethene-containing N^C and an ancillary O^O ligand have been synthesized and characterized. These complexes exhibit photochromism that can be triggered by photoexcitation and their photophysical and photochromic properties can be tuned by varying the ligands. Moreover, the complexes demonstrate fatigue resistance and thermal irreversibility, making them promising candidates for various applications.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Chun-Yin Wong, Shiu-Lun Lai, Ming-Yi Leung, Man-Chung Tang, Lok-Kwan Li, Mei-Yee Chan, Vivian Wing-Wah Yam
Summary: A new series of cyclometalating ligands with bulky substituents are designed and synthesized. These gold(III) complexes exhibit high photoluminescence quantum yields and short excited-state lifetimes in the solid state at room temperature. Organic light-emitting devices (OLEDs) based on these complexes show promising electroluminescence performances with high external quantum efficiencies and efficiency roll-offs. The mercury-free synthesis and record-long operational lifetimes make these complexes potential emitting materials for practical OLEDs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Michael Ho-Yeung Chan, Vivian Wing-Wah Yam
Summary: Supramolecular functional materials, stabilized by self-assembled molecules through supramolecular chemistry, have been a promising field. Metal-metal interactions, a type of unconventional noncovalent interaction, have been utilized to construct self-assembled metal-based materials with rich spectroscopic functionalities. However, the systematic control of hierarchical architectures through metal-metal interactions remains challenging.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Fangrui Zheng, Yuhong Yang, Siye Wu, Shunan Zhao, Yifan Zhu, Huimin Su, Jun-Feng Dai, Zeyin Yan, Lung Wa Chung, Keith Man-Chung Wong
Summary: In contrast to the well-studied dirhodium(II) complexes and iridium(III) complexes, neutral or dicationic dinuclear iridium(II) complexes with unsupported ligands are relatively unexplored. In this study, a series of tetracationic dinuclear iridium(II) complexes with long bond distances and photoluminescent properties were synthesized and characterized. It was found that these complexes exhibit high stability due to London dispersion interactions, despite the long Ir(II)-Ir(II) bond lengths, and show potential for further photoreactivity studies involving the generation of iridium(II) radical monomers.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Youzhi Xu, Fabian Steudel, Ming-Yi Leung, Biao Xia, Max von Delius, Vivian Wing-Wah Yam
Summary: Both pillar[n]arenes (P[n]As) and [n]cycloparaphenylenes ([n]CPPs) have been synthesized and integrated into bismacrocycles [n]CPP-P[5]A. The bismacrocycles exhibit higher photoluminescence quantum yield (phi(F)) compared to the corresponding [n]CPPs. Chiral enantiomers (pR)/(pS)-[8]CPP-P[5]A with circularly polarized luminescence (g(lum)approximate to 0.02) were successfully isolated, and the bismacrocycles showed high affinity and specificity towards pyridinium salts and fullerene derivatives. Transient absorption studies revealed photo-induced electron transfer in [10]CPP-P[5]A superset of C-60 complex. The results suggest the potential applications of [n]CPP-P[5]A in CPL-active materials, multiple guest recognition, and supramolecular polymer preparation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Jingyi Lu, Shunan Zhao, Fangfang Wei, Keith Man-Chung Wong
Summary: A series of NIR-emitting rhodium(III) complexes with extended pi-conjugation structure and electron-donating substituents have been synthesized. The luminescence can be further shifted to the red through the introduction of thienyl groups on the benzo[g]quinoxaline moiety. These complexes exhibit luminescence maxima ranging from 763 nm to 792 nm with a quantum yield of 0.41% to 0.66% in dichloromethane solution. This work presents the first examples of NIR-phosphorescent rhodium(III) complexes and offers a new strategy for the development of NIR materials.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Vonika Ka-Man Au, Vivian Wing-Wah Yam
Summary: This study designed and synthesized a series of luminescent bis-alkynylgold(III) complexes with bidentate C^N-type ligands and compared their properties with related tridentate cyclometalated complexes. The results showed that all of the complexes exhibit rich photophysical and electrochemical properties, especially strong emissive properties at ambient conditions.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2023)
Article
Chemistry, Organic
Jingjie Cao, Chun-Ting Poon, Michael Ho-Yeung Chan, Eugene Yau-Hin Hong, Yat-Hin Cheng, Franky Ka-Wah Hau, Lixin Wu, Vivian Wing-Wah Yam
Summary: A new class of amphiphilic boron(iii) diketonate compounds has been synthesized, forming thin 2D nanosheet assemblies driven by non-covalent pi-pi interactions and hydrophobic interactions. Detailed studies on the self-assembly mechanism have been conducted using solvent- and temperature-dependent electronic absorption and emission experiments. The supramolecular nanostructures and morphologies have been characterized by TEM, AFM, and XRD, providing insights into the assembly of boron(iii) diketonate coordination materials.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Cathay Chai Au-Yeung, Ming-Yi Leung, Shiu-Lun Lai, Shun-Cheung Cheng, Lok-Kwan Li, Man-Chung Tang, Wing-Kei Kwok, Chi-Chiu Ko, Mei-Yee Chan, Vivian Wing-Wah Yam
Summary: A new class of gold(III) complexes with pyridine-/pyrazine-containing tetradentate ligands has been synthesized and characterized. These complexes exhibit high photoluminescence quantum yields in solid-state thin films and a significant increase in radiative decay rate constant upon increasing temperature. The activation parameters and energy separation values between excited states were determined. Furthermore, strategic modification of the ligand structure can enhance the alignment of the emitting layer and improve the efficiency and performance of organic light-emitting devices.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Chun-Yin Wong, Man-Chung Tang, Lok-Kwan Li, Ming-Yi Leung, Wai-Kit Tang, Shiu-Lun Lai, Wai-Lung Cheung, Maggie Ng, Mei-Yee Chan, Vivian Wing-Wah Yam
Summary: A new class of gold(iii) complexes with high photoluminescence quantum yields and short excited state lifetimes have been developed through the design and synthesis of a series of carbazolyl ligands. These complexes show promising electroluminescence performance in organic light-emitting devices and exhibit low efficiency roll-off values at practical luminance brightness level.
Article
Chemistry, Multidisciplinary
Tony Ho-Ching Fung, Cheok-Lam Wong, Wai-Kit Tang, Ming-Yi Leung, Kam-Hung Low, Vivian Wing-Wah Yam
Summary: A new series of four-coordinate boron compounds with reversible photochromic properties have been successfully designed and synthesized. The photochromic behavior can be tuned by modifying the ancillary ligand.
CHEMICAL COMMUNICATIONS
(2022)
