Article
Chemistry, Multidisciplinary
Chang Liu, Qing Li, Haopeng Wang, Gefei Wang, Haixia Shen
Summary: This work presents a self-healing assembly method for preparing various fluorescent quantum dots (QDs)-loaded gels. The as-prepared gels exhibit pH sensitivity, satisfactory mechanical properties, and excellent self-healing properties. The integration of QDs with gels enables the fabrication of fluorescent composites, which show potential applications in LED devices. Additionally, the self-healing assembly method using QDs-loaded gels as building blocks allows for the construction of complex structures with different fluorescence, which can be used for sensing and encoding purposes.
Article
Chemistry, Multidisciplinary
Ke Liu, Jing Zhang, Qiyuan Shi, Liping Ding, Taihong Liu, Yu Fang
Summary: This study reports a new strategy for tuning excited-state intramolecular proton transfer (ESIPT) by incorporating an excited-state intramolecular charge transfer (ESICT) process. Three o-carborane derivatives were designed to selectively detect mustard gas simulant using film-based fluorescence sensing. This work provides a reliable strategy for creating high-performance sensing fluorophores via ESIPT manipulation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yiwei Gao, Jie Zhao, Zehuan Huang, Tanya K. Ronson, Fen Zhao, Yue Wang, Boyang Li, Chenlu Feng, You Yu, Yongliang Cheng, Dong Yang, Xiao-Juan Yang, Biao Wu
Summary: This study demonstrates the fabrication of functional gels through the self-assembly of anion-coordinated assemblies. The obtained gels exhibit excellent flexibility and selective wettability, making them suitable for conductive adhesion between different surfaces.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Paniz Rahmani, Melissa Goodlad, Yehan Zhang, Yichen Li, Tao Ye
Summary: This study develops a one-step ligand-exchange method to produce water-soluble QD-DNA conjugates with high photoluminescence. These bioconjugates can be used for DNA-directed self assembly and demonstrated fluorescence quenching by adjacent gold nanoparticles. Such QD-AuNP dimers can serve as biosensors with improved sensitivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Spectroscopy
Tiago E. A. Frizon, Cristian A. M. Salla, Felipe Grillo, Fabiano S. Rodembusch, Viktor S. Camara, Henrique C. Silva, Eduardo Zapp, Eduardo Junca, Fabio Z. Galetto, Angelica M. de Costa, Gabriela J. Pedroso, Antonio A. Chepluki, Sumbal Saba, Jamal Rafique
Summary: This study synthesized new PMDI derivatives through proton-transfer reactions in the excited state (ESIPT). These compounds exhibited absorption maxima in the ultraviolet region and showed redshifted absorptions compared to the non-ESIPT dye. They also displayed fluorescence emissions dependent on solvent polarity and chemical structure, with ESIPT derivatives showing dual fluorescence and a large Stokes shift. The compounds demonstrated good thermal stability and electrochemical properties.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Kangmin Wang, Ruike Hu, Jingyu Wang, Jingxian Zhang, Junxiang Liu, Bijin Li, Liang Zhou, Linsen Zhou
Summary: In this study, a compound with reversible excited-state intramolecular proton transfer (ESIPT) was synthesized and used in the fabrication of organic white light-emitting devices. The devices showed white electroluminescence and achieved a high external quantum efficiency. The characteristics of the compound were confirmed through fluorescence testing.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Liyu Zhu, Yucheng Li, Peng Ye, Jingyang Zhao, Jing Liu, Jiandu Lei, Luying Wang, Ruisheng Xue
Summary: This article presents an ultra-stable and highly proton conductive self-healing proton exchange membrane made by complexation between Nafion and poly(vinyl alcohol) (PVA), followed by incorporation of sodium lignosulfonate (SLS) intercalation-modified graphene oxide (GO) and post-modification with 4-formylbenzoic acid (FBA). Compared to recast Nafion, the composite membranes exhibit improved mechanical properties and higher proton conductivity. Moreover, the incorporated PVA gives the membranes superior self-healing capabilities. This study opens up new possibilities for the development of reliable and durable proton exchange membranes for fuel cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jie Gao, Wen-Da Zhang, Lin-Lin Wang, Yu-Xuan Chen, Ya-Xiang Shi, Wei Ji, Zexiao Xu, Xiaodong Yan, Zhi-Guo Gu
Summary: Photoresponsive self-healing polymer gels, based on dynamic imine bonds and DEA/DBD, show ultrafast photoresponsive ability with rapid color transition under UV-Vis and visible light. The molecular states of DEA affect the fluorescence intensity, with ring-opened DEA showing stronger blue fluorescence. Additionally, the cross-linked dynamic imine bond enables the gels to self-heal quickly without external stimuli, with wounds disappearing within 10 minutes.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Aleksandr Buglakov, Valentina V. Vasilevskaya
Summary: Amphiphilic polymers in mixed solvents can form fibrils and gels through cononsolvency effect. The gelation mechanism is dependent on solvent interactions, and the morphology of the resulting fibrillar gel can be controlled by changing binary solvent composition. This study provides insights into the formation and properties of fibrillar gels, which can be useful for controlling synthetic matrix morphologies in tissue engineering.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xiao Luo, Wei Shi, Yunfan Yang, Yongqing Li
Summary: The study introduced a new fluorescence probe HMBT-LW, successfully detecting O-2(center dot)- ions in living organisms and exploring its excited intramolecular proton transfer mechanism. The experimental results indicated that the emitted fluorescence originated from the isomer structure of HMBT.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Vinod Kumar, Siddharth Pandey, Kamalakanta Behera
Summary: This study conducted a detailed comparative investigation on the aggregation behavior of a cyanine dye in mixed ionic liquids and common organic solvents, revealing the formation of different aggregates under different conditions. The results could contribute to technological applications requiring different forms of a dye molecule and enhance the potential applications of ionic liquids. The study provides a better understanding of the behavior of carbocyanine dyes in ionic liquid based media and different organic solvents based media.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Milena Lama, Biravena Raveendranathan, Julie Brun, Francisco M. Fernandes, Cedric Boissiere, Nadine Nassif, Alba Marcellan
Summary: This study focuses on the manipulation of collagen self-assembly in vitro, revealing its significant impact on the mechanical response of biological tissues. The involvement of suprafibrillar organization is crucial for modulus at early stage of deformations and tensile toughness, while mechanisms at the fibril level affect durability under cyclic loading and stress relaxation. By altering interfibrillar interactions through changes in physicochemical environment, more biomimetic mechanical responses can be achieved, offering new possibilities for tissue engineering.
MACROMOLECULAR BIOSCIENCE
(2021)
Article
Chemistry, Physical
Min Ying Tsang, Shun Tokuda, Po-Chun Han, Zaoming Wang, Alexandre Legrand, Marina Kawano, Masahiko Tsujimoto, Yuki Ikeno, Kenji Urayama, Kevin C-W Wu, Shuhei Furukawa
Summary: Assembling multiple chemical components into a material in a controlled manner is a significant challenge in chemistry. In this study, a synthetic strategy to construct porous networks with multiple chemical components is demonstrated, offering an alternative approach to developing functional porous soft materials.
Review
Polymer Science
Ruben Van Lommel, Wim M. De Borggraeve, Frank De Proft, Mercedes Alonso
Summary: Supramolecular gels, a class of soft materials explored heavily in the past 20 years, have potential value in computational techniques that has been less emphasized. This review provides an overview of studies using computational tools to better understand the self-assembly behavior of supramolecular gels and accelerate their development through prediction. Future challenges in the field are discussed, along with how computational methods could help overcome them.
Article
Nanoscience & Nanotechnology
Botian Li, Yichi Zhang, Jian Wang, Bo Yan, Jundang Liang, Yuping Dong, Qiong Zhou
Summary: A humidity-responsive fluorescence system was designed and assembled to achieve a rapid, reversible, and specific moisture response. The system exhibited a high response/recovery speed, an obvious color change, good reversibility, and an outstanding specific moisture response.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Hyun-Jun Lee, Abasi Abudulimu, Juan Carlos Roldao, Hyunwoo Nam, Johannes Gierschner, Larry Lueer, Soo Young Park
Summary: A highly efficient photocatalytic system for hydrogen evolution was developed using self-assembled nanoparticles based on an octupolar molecule. The addition of halide ions improved the rate of hydrogen evolution reaction due to the external heavy atom effect enhancing intersystem crossing. The highest hydrogen evolution rate of the system reached 460 mmol/g.h with the presence of iodide ions and a metal co-catalyst. Moreover, the photocatalytic system without any halide ion additives showed remarkable efficiency in hydrogen generation from seawater using stimulated sunlight (apparent quantum yield of about 3.8%).
Article
Chemistry, Multidisciplinary
Seong Il Kim, Hyeong Ju Kim, Soo Young Park
Summary: In this study, a highly fluorescent zero-dimensional nano-ring supramolecular organic framework (SOF) was designed using CB[8] as the host and a novel bent-shaped cyanostilbene guest. The host-guest complex successfully formed a macrocyclic hexamer and exhibited significantly enhanced fluorescence (phi(F)=68%) compared to the non-assembled monomer (phi(F)=2%). Unlike other SOFs, this 0D SOF could be uniformly dispersed in water without bundling phenomenon.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Applied
Byung Hak Jhun, Soo Young Park, Youngmin You
Summary: Circularly polarized luminescence (CPL) is a unique way of emitting light that can be used for visualizing target analytes. CPL sensors can detect changes in an asymmetric environment by altering the polarization direction, magnitude, or peak wavelength of emitted light.
Article
Engineering, Chemical
Poonam Kumari, Poonam Disha, Manoj K. Nayak, Dhirendra Dhruwe, Manoj K. Patel, Sunita Mishra
Summary: This article explores the synthesis, characterization, and performance of graphene-based magnetic cation exchangers for the efficient removal of methylene blue from aqueous solutions. The nanoadsorbers were extensively characterized using various techniques, and the adsorption behavior was studied in detail. The findings suggest that the sulfonated magnetic graphene oxide cation exchanger exhibits high adsorption capacity and can be effectively regenerated for multiple cycles, making it a promising candidate for wastewater treatment.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Illia E. Serdiuk, Seyoung Jung, Michal Monka, Chi Hyun Ryoo, Soo Young Park
Summary: In the search for high energy organic materials for blue OLEDs, a tunability of the triplet state localized on phenyl-s-triazines (3LE) was discovered. This tunability, achieved by substitution at s-triazine, plays a key role in achieving fast reverse intersystem crossing (rISC) and high external quantum efficiency (EQE) in OLEDs. By using phenyl-s-triazines with high 3LE energies as electron acceptors, a series of blue TADF emitters were developed. However, the enhanced 3LE-1CT interaction was found to be beneficial for ISC but not for rISC, contradicting the three-state model prediction. Instead, the direct 3CT -> 1CT interaction was found to be crucial for rISC and OLED efficiency. It is concluded that enhancing the 3CT -> 1CT transition should be a novel design rule for blue TADF emitters.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Rajib Gope, Manoj Kumar Nayak, Sachin Shaw, Sabyasachi Mondal
Summary: The major goal of this article is to investigate the flow and thermal aspects of Oldroyd B with a hybrid nanostructure subject to a radially stretched surface under the influence of low and moderate Prandtl numbers. The non-dimensional governing equations are solved using BVP4C in MATLAB. It is found that amplified relaxation and retardation time parameters control the heat transfer rate, while radial velocity and entropy generation exhibit opposite effects in response to these parameters.
MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Applied
Seung Hwa Hong, Dong Won Kim, Soo Young Park
Summary: We propose an eco-friendly aqueous process to obtain efficient/stable small molecule organic field effect transistors (OFETs). Penta-ethylene glycol (PEG) side chains were introduced to the rigid backbone structures of indolo[3,2-b]indole(IDID), leading to the formation of PEG-IDIDF. The addition of water as a cosolvent significantly enhances the film crystallinity and molecular stacking orientation of PEG-IDIDF, resulting in improved hole mobility and current on/off ratio for the PEG-IDIDF OFETs processed with ethanol water cosolvent (90:10) ratio.
Article
Engineering, Electrical & Electronic
Aarti Chauhan, Manoj Kumar Patel, Shilpa Chaudhary, Manoj Kumar Nayak, Surender Singh Saini, Pratap Pullammanappallil, Nadarajah Manivannan, Geoffrey Robert Mitchell, Wamadeva Balachandran
Summary: This research aims to evaluate the chargeability of sodium hypochlorite and an air-assisted electrostatic disinfection device. Five different surfaces were examined to assess efficacy, survival time, off-target losses, spray coverage, and disinfectant consumption. The results showed that sodium hypochlorite achieved a significant charge-to-mass ratio of 2.43 mC/kg at specific conditions and effectively eliminated Pseudomonas aeruginosa, Clostridium perfringens, and Bacteriophage MS2 colonies at a concentration of 1000 mg/L.
JOURNAL OF ELECTROSTATICS
(2023)
Article
Multidisciplinary Sciences
Aarti Chauhan, Manoj Kumar Patel, Manoj Kumar Nayak, Surender Singh Saini
Summary: Electrostatic spraying is an effective method for disinfecting surfaces to prevent transmission of SARS-CoV-2. The design and performance of a motorized pressure-nozzle based handheld electrostatic disinfection device were optimized, and the chargeability of various disinfectants was investigated.
Article
Chemistry, Physical
Dong Won Kim, Kang-Hoon Choi, Seung Hwa Hong, Hyun-Sik Kang, Ji Eon Kwon, Sungjin Park, Byeong-Kwan An, Soo Young Park
Summary: The development of a new concept of hole transporting materials (HTMs) has led to the advancement of high-performing and stable perovskite solar cells (PSCs). Small molecular organic semiconductors, known for their reproducibility and easy synthesis, have been extensively studied for HTM. This research introduces a novel linear-type series of indoloindole (IDID)-based hole transporting materials, consisting of a fluorinated IDID core (IDIDF) and multiple thiophene rings. The structure-property relationship of the IDIDF derivatives is systematically investigated, resulting in the identification of an optimized material that exhibits improved solubility, favorable molecular packing patterns, and superior hole mobility. The champion PSCs using this optimal molecule, IDIDF2, achieve remarkable thermal and moisture stabilities, making them one of the highest performing n-i-p planar device configurations to date.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Siyang Feng, Liangxuan Wang, Begona Milian-Medina, Alfred J. Meixner, Min Sang Kwon, Soo Young Park, Reinhold Wannemacher, Johannes Gierschner
Summary: The complex photokinetics of donor-acceptor-donor triads with varying flexible spacer lengths were investigated. Both liquid and solid solutions, as well as crystals, were studied using fluorescence spectroscopy and computational analysis. The study revealed dynamic charge-transfer state formation in liquid solutions and fluorescent CT static complexes in solid solutions. It was also found that external stimuli could induce on/off fluorescence switching or change the emission color in films of the triads.
ADVANCED MATERIALS
(2023)
Article
Environmental Sciences
Saloni Sharma, Gurjeet Kaur, Akash Deep, Manoj K. Nayak
Summary: In this study, a nanoadsorbent was developed by grafting a layer of NH2-MIL-125(Ti) onto Fe3O4@SiO2 magnetic nanospheres, which showed the capability to selectively remove multiple pathogenic bacteria from water. The synthesized nanoadsorbent exhibited well-defined core-shell structure and magnetic behavior. It has great potential in microbiology applications and water remediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Dong Su Shin, Young Jae Park, Jae Hyeon Lee, Ji-Yeon Kim, Hyunbok Lee, Kitae Kim, Yeonjin Yi, Ji Eon Kwon, Kyunam Lee, Soo Young Park, Sang-Youp Yim, Donghee Park, Dong Ick Son
Summary: In the field of organic display devices, the solution process of organic materials still requires further research in order to achieve simple manufacturing processes and flexible characteristics. In this study, we propose novel small-molecule hole-transporting materials, 3PTZ and 3PXZ, for solution-processed polymer light-emitting diodes (PLEDs). The PLEDs with 3PTZ and 3PXZ as hole transport layers (HTLs) showed improved luminance and quantum efficiency compared to the reference PLED without a HTL. The optimized energy band structure of 3PTZ and 3PXZ HTLs exhibited similar performances regardless of the deposition processes.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Thermodynamics
Bhose Ganga, Sekar Charles, Abdul Kaffoor Abdul Hakeem, Manoj Kumar Nayak, Taseer Muhammad, Naura Albogami, Sivanandam Sivasankaran
Summary: The convective 3-D MHD boundary-layer transport of Casson liquid is studied in this research. The study takes into account the presence of an unsteady stretchable sheet, a permeable medium, and variable thermal conductivity. Conservation laws are transformed into ordinary differential equations (ODEs) and solved using the fourth-order Runge-Kutta integration scheme in conjunction with the shooting procedure. The obtained numerical results for a specific case show good agreement with existing results.
Article
Electrochemistry
Hyunji Park, Yoshiaki Shuku, Jihyun Lee, Kyunam Lee, Dong Joo Min, Byeong-Kwan An, Kuino Awaga, Soo Young Park, Ji Eon Kwon
Summary: Organic electrode materials are suitable for alkali metal batteries due to their unique redox mechanism and flexible molecular structure. In this study, an ortho-isomer of triptycene tribenzoquinone (o-TT) is presented as a universal organic cathode material for alkali metal batteries. By changing the position of the carbonyl group in the benzoquinone units, the redox potentials of TT are enhanced without sacrificing its large specific capacity. o-TT exhibits high energy densities in Li, Na, and K cells due to multi-electron redox reactions and elevated redox potentials. Finally, the cycle stability of o-TT is significantly improved by fabricating composite electrodes with disordered mesoporous carbon (DOMC).
BATTERIES & SUPERCAPS
(2023)
