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.
Article
Chemistry, Physical
Tobias Dwyer, Timothy C. Moore, Joshua A. Anderson, Sharon C. Glotzer
Summary: Entropy compartmentalization provides new self-assembly routes to colloidal host-guest structures. By modifying the shape of guest particles, a variety of crystal structures and pore motifs can be formed when mixed with star-shaped host particles. The assembly is driven by entropy compartmentalization, with different contributions from the host and guest particles to the free energy of the system.
Article
Chemistry, Physical
Tobias Dwyer, Timothy C. Moore, Joshua A. Anderson, Sharon C. Glotzer
Summary: Entropy compartmentalization provides a new self-assembly route for colloidal host-guest (HG) structures. Leveraging host particle shape has been recently proposed and demonstrated for the assembly of HG structures. However, the influence of guest particles on the porous network structure of host particles has not been explored.
Article
Chemistry, Multidisciplinary
Natsumi Nitta, Shin-ichi Kihara, Takeharu Haino
Summary: We developed a new synthetic method to construct supramolecular A(8)B(n) (n=1, 2, 4) miktoarm star copolymers through host-guest complexation. The formation of these copolymers was confirmed by various analytical techniques. The miktoarm copolymers exhibited phase separation in bulk, and the micro-Brownian motion of the A(8)B(4) structure was enhanced due to weak segregation interaction between immiscible arms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jieyu Zheng, Larissa K. S. von Krbek, Tanya K. Ronson, Jonathan R. Nitschke
Summary: Spin-crossover (SCO) metal-organic cages have the potential to be used as magnetic sensors and switches. Variations in the donor strength of heterocyclic aldehyde subcomponents in imine-based ligands can tune the ligand field for a Fe-II center, resulting in diverse SCO behaviors in the cages. The tetrahedral SCO cage built from 1-methyl-1H-imidazole-2-carbaldehyde can encapsulate various guests and stabilize different cage spin states depending on guest size. The SCO tetrahedron also exhibits different affinities for guests in different spin states, which is attributed to subtle structural differences caused by the change in the metal center spin state.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Biomedical
Qiuhui Hu, Bo Zhang, Huiming Ren, Xiaoxuan Zhou, Chengbin He, Youqing Shen, Zhuxian Zhou, Hongjie Hu
Summary: This study introduces a facile and degradable self-assembly ss-cyclodextrin metal-organic framework (ss-CD-MOF) nanoplatform for customizable multifunctional imaging. The nanoparticles obtained with favorable morphology and size were functionalized with probes for multiple biomedical imaging. These ss-CD-MOF-based nanoparticles showed superior performance compared to small molecular probes, demonstrating their potential for developing safe and multifunctional imaging probes.
ACTA BIOMATERIALIA
(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)
Article
Polymer Science
Jun Wang, Xin-Yue Lou, Jun Tang, Ying-Wei Yang
Summary: This study reports on the development of color-tunable room temperature phosphorescence (RTP) luminescent materials with stimuli-responsive properties. The extended red-shifted multicolor RTP afterglow from blue to orange, including white light, is achieved using a series of newly designed supramolecular polymers. The addition of pH-sensitive fragments enables a comprehensive blue-shifted color tuning range. The optimized intelligent multicolor RTP systems show great potential for practical applications.
JOURNAL OF POLYMER SCIENCE
(2023)
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
Yu-Yuan Ye, Zi-Xin Wang, Shi-Yuan Xu, Xiao-Wei Lin, Jie Luo, Wen-Zhen Li, Xiao-Qiang Wang
Summary: In this study, a series of supramolecular radical switches controlled by host-guest chemistry were proposed and applied to regulate the generation of free radicals. It was found that the radical-generation ability of thermal initiators can be turned off by binding with cucurbit[8]uril, but can be instantaneously turned on in the presence of other competitors. These novel switches provide a simple and effective strategy to control the generation of free radicals, which may arouse research interests in polymerization, catalysis, and the biomedical field.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Hui Guo, Gaelle Le Fer, Thi Nga Tran, Aurelie Malfait, Dominique Hourdet, Alba Marcellan, Francois Stoffelbach, Joel Lyskawa, Richard Hoogenboom, Patrice Woisel
Summary: The combination of thermo-responsive polymers with supramolecular chemistry has led to the development of adaptive materials based on reversible regulation of host-guest complexation. The study found that the phase separation mechanism of thermoresponsive polymers is a key factor that dominates the host-guest complexation behavior.
Article
Polymer Science
Weijie Zhu, Hao Xing, Errui Li, Huangtianzhi Zhu, Feihe Huang
Summary: This study presents a new strategy to enhance organic phosphorescence in the amorphous state through copolymerization and host-guest complexation. The random copolymer synthesized exhibited satisfactory phosphorescent behavior and the quantum yield and lifetime were further improved after complexation with K+. This work opens up new possibilities for the development of phosphorescent polymeric materials with advantages of simple preparation, processability, and controllability.
Article
Chemistry, Organic
Gang Wu, Sheng-Yi Zhuang, Yusran Yusran, Zhan-Ting Li, Dan-Wei Zhang
Summary: Paracyclophane has been understudied compared to other macrocyclic compounds, but through modification of pillar[5]arene, new pentagonal macrocycles (pseudo[n]-pillar[5]arenes) were obtained. These macrocycles showed the ability to form complexes with various guests in a 1:1 ratio. The binding constants decreased with the decrease of substituted phenylene segments. Notably, the conformation of P[n]P[5]s could adjust effectively when binding with succinonitrile in the solid state.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Hongjun Li, Lin Zhang, Huajun He, Yu Yang, Yuanjing Cui, Guodong Qian
Summary: The tunable nonlinear optical responses in a single nano-/micro-structure based on host-guest metal-organic framework materials were demonstrated, through encapsulating linear dye molecules into periodic one-dimensional channels. The highly ordered structures of MOFs impart spatial regulation on the linear dye molecules to realize orientation alignment and polarized anisotropy emission, leading to tunable NLO properties such as TPL, SHG, and THG by switching the incident excitation wavelength.
SCIENCE CHINA-MATERIALS
(2021)
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)
Article
Computer Science, Theory & Methods
Wanchun Jiang, Yujia Qiu, Yucheng Chen, Fa Ji, Haiming Xie, Xiangqian Zhou, Jialiang Chen, Jiawei Huang, Jianxin Wang, Yan Li
Summary: In distributed key-value stores, the selection of replica servers is crucial for reducing response time. However, existing replica selection algorithms suffer from poor timeliness of feedback information. To address this issue, this paper proposes an Accelerated Information Dissemination (AID) mechanism that allows both client and replica server to store records about the status of replica servers and piggyback multiple records in the key-value pairs. The results show that AID significantly improves the timeliness of feedback information, especially in large-scale deployments.
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
(2023)
Article
Mathematics
Yu Chen, Weili Yao
Summary: In this paper, we investigate the mean-square estimate of the automorphic L-function L(f)(s, chi) attached to a normalized Hecke eigen forms f and a primitive Dirichlet character chi modulo q, for the full modular group SL(2, Z) with even integral weight k ≥ 2. Utilizing properties of Fourier coefficients and analytic methods, we establish an asymptotic formula that refines previous results.
INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS
(2023)
Review
Biochemistry & Molecular Biology
Busra Cengiz, Tugce Nihal Gevrek, Laura Chambre, Amitav Sanyal
Summary: In recent years, the bottom-up approach has become a powerful tool in fabricating functional nanomaterials through the self-assembly of nanoscale building blocks. Molecular recognition among the building blocks helps in precise positioning to yield difficult-to-obtain nano- and microstructures. Cyclodextrin-mediated interactions in aqueous environments have been exploited to design and construct functional nanomaterials based on cyclodextrin-coated metal nanoparticles. Recent advances in the self-assembly of cyclodextrin-coated metal nanoparticles driven by specific host-guest interactions are discussed in this review.
Article
Materials Science, Biomaterials
Ismail Altinbasak, Salli Kocak, Aaron H. Colby, Yasin Alp, Rana Sanyal, Mark W. Grinstaff, Amitav Sanyal
Summary: Electrospun nanofibers have numerous advantages as a scaffold for drug delivery devices. A new pH-responsive nanofiber buttress was synthesized via electrospinning. The buttress transforms from a hydrophobic to a hydrophilic state under relevant pH conditions and releases the encapsulated drug. It shows controlled drug release and cytotoxicity to cancer cells.
BIOMATERIALS SCIENCE
(2023)
Article
Engineering, Biomedical
Sourav Das, Manju Solra, Subinoy Rana
Summary: This article discusses the potential of using emulsion gels as a drug delivery system for osteoarthritis treatment. Emulsion gels, consisting of hydrogels and oil droplets, can increase biocompatibility and prevent drug degradation. Stimuli-responsive emulsion gels may also have the ability to promote tissue growth and recovery in OA-affected joints.
REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE
(2023)
Article
Environmental Sciences
Tse-Lun Chen, Chen-Hao Lai, Yu-Cheng Chen, Yu-Hsuan Ho, Albert Y. Chen, Ta-Chih Hsiao
Summary: This study investigates the sources of submicron and ultrafine particles (UFP) using a positive matrix factorization model. It found that UFP exposure is epidemiologically and toxicologically linked to pulmonary, neurodegenerative, and cardiovascular diseases. The study identified the contributions of particle chemical composition and size distribution to lung deposition and excess cancer risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Chemistry, Analytical
Sinem Orbay, Amitav Sanyal
Summary: In recent years, droplet-based microfluidics has gained increasing attention as a tool for fabricating microparticles with a narrow range of sizes, thanks to its ability to utilize fluid mechanics. This approach also allows for the control of the composition of the resulting micro/nanomaterials. Traditional methods, such as grinding and sieving, often result in poor control over particle size and distribution. Droplet-based microfluidics provides an attractive alternative for the fabrication of molecularly imprinted microparticles. This mini-review presents recent examples of the application of droplet-based microfluidics in fabricating molecularly imprinted polymeric particles for chemical and biomedical sciences.
Article
Nanoscience & Nanotechnology
Shachar Keren, Cynthia Bukowski, Maya Barzilay, Myounguk Kim, Mikhail Stolov, Alfred J. Crosby, Noy Cohen, Tamar Segal-Peretz
Summary: Sequential infiltration synthesis (SIS) is an emerging technique for fabricating hybrid organic-inorganic materials with nanoscale precision and controlled properties. This work studies the nanocomposite morphology and its effect on the mechanical behavior of SIS-based hybrid thin films of AlOx -PMMA under aqueous environments. Results show that the AlOx content affects the modulus and yield stress of the material. Additionally, the presence of AlOx induces water uptake, which further influences the performance of the hybrid materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Hyemin Kim, James J. J. Watkins, Alfred J. J. Crosby
Summary: Poly(dimethylsiloxane) (PDMS) bottlebrush elastomers (BBEs) are soft materials with controlled bulk mechanical properties. A study of the adhesion of PDMS BBEs to glass reveals that the critical energy release rates, G(c), for initiating separation are independent of crosslink density. The monomer chemistry of side chains plays a primary role in defining surface properties, while the faster dissipative relaxation mechanisms within BBEs contribute to their lower G(c) and less velocity dependence compared to linear chain networks.
Article
Multidisciplinary Sciences
Carlos A. Lugo, Chiara Airoldi, Chao Chen, Alfred J. Crosby, Beverley J. Glover
Summary: We study the origin and propagation of surface nano-ridges in plant petal epidermal cells using the model system Hibiscus trionum. By tracking the development of cell shape and cuticle, we observe the formation of two distinct sub-layers in the cuticle and propose a mechanical model assuming it behaves as a growing bi-layer. Our numerical investigations in two- and three-dimensional settings replicate the observed developmental trajectories in petals and provide insights into the factors influencing the pattern features.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Environmental Sciences
Chuan-Hsiu Huang, Yi-Ru Ko, Tzu-Chi Lin, Yu-Hsiang Cheng, Yu-Cheng Chen, Yu-Chieh Ting
Summary: The COVID-19 pandemic in northern Taiwan resulted in the implementation of Level 3 alert measures, significantly impacting air quality and providing an unprecedented opportunity to understand future control strategies for air pollutants. This study comprehensively investigated the variations in sources, chemical characteristics, and human health risks of PM2.5. The study found that PM2.5 mass concentrations and inorganic ions were greatly reduced during the alert period, while organic matter and elemental carbon decreased to a lesser extent, causing a shift in the chemical composition of PM2.5. The study also identified the primary sources of PM2.5 and highlighted the need for continued efforts in reducing carbonaceous matter emissions.
AEROSOL AND AIR QUALITY RESEARCH
(2023)
Article
Public, Environmental & Occupational Health
Tzu-Yi Lu, Chih-Da Wu, Yen-Tsung Huang, Yu-Cheng Chen, Chien-Jen Chen, Hwai- Yang, Wen-Chi Pan
Summary: This study investigated the association between metal constituents in PM2.5 and the risk of liver cancer. Long-term exposure to copper (Cu) in PM2.5 was found to be positively associated with the risk of liver cancer. The findings suggest that copper in PM2.5 may contribute to the association between PM2.5 exposure and liver cancer.
JOURNAL OF EPIDEMIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jagabandhu Sahoo, Soumyashree Sahoo, Yogeswari Subramaniam, Preeti Bhatt, Subinoy Rana, Mrinmoy De
Summary: This study presents a reversible biointerface on a 2D-MoS2 platform that can selectively interact with different types of bacteria. The reversible control of strain-selective bactericidal activity is achieved through photoswitching. This method has potential applications in wound healing.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Environmental Sciences
Yu-Chuan Yen, Chun-Hung Ku, Tsung-Chieh Yao, Hui-Ju Tsai, Chiung-Yu Peng, Yu-Cheng Chen
Summary: This study assessed the variability and potential health risks of exposure to aldehydes in schoolchildren, finding that personal exposure to formaldehyde and acrolein were higher during the warm season. The within-subject variance accounted for the majority of the total variance in exposure. Factors such as season, location, household refurbishment, and indoor ventilation were significantly associated with personal exposure to aldehydes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Rohit Kapila, Bhaskar Sen, Alisha Kamra, Shana Chandran, Subinoy Rana
Summary: Artificial enzyme equivalents, known as nanozymes, are a practical tool for environmental remediation. This study introduces aggregation-induced emissive Pt(ii) complex that self-assembles in water to provide NanoPtA nanotapes. The NanoPtA structure exhibits specific oxidase-like activity driven by light, leading to efficient degradation of toxic chemicals within minutes.
