Article
Chemistry, Multidisciplinary
Joonsik Seo, Mohammed Iqbal Khazi, Kwangmin Bae, Jong-Man Kim
Summary: Self-assembly is an efficient method for designing functional nanomaterials. In this study, a functional perylene diimide (PDI) derivative, PDI-DA, was designed to investigate the pathway complexity during self-assembly. The temperature control and UV-induced polymerization helped capture the intermediates and understand the mechanism. The morphological evolution showed two kinetic intermediates before transforming into the thermodynamic product, and spectroscopic studies revealed distinct H- and J-aggregates for kinetic and thermodynamic products respectively. The polymerized PDI-DA exhibited reversible switching between J- and H-aggregates.
Article
Chemistry, Multidisciplinary
Shuqi Chen, Shishi Feng, Albert J. J. Markvoort, Cankun Zhang, Enyang Zhou, WanZhen Liang, Hui-Jun Zhang, Yun-Bao Jiang, Jianbin Lin
Summary: A quadruple assembly was successfully constructed by self-assembly, in which four identical dye molecules were divided into two different aggregate states, achieving intelligent allocation of labor. This finding is expected to advance the rational design of dye stacks to emulate the functions of natural light-harvesting systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Nadjib Kihal, Ali Nazemi, Steve Bourgault
Summary: Research has shown that supramolecular bio-assemblies based on PDI have unique structures and functionalities. By conjugating PDI derivatives with biological molecules, nanoassemblies with tailored functional properties can be constructed.
Article
Chemistry, Analytical
Yaru Liu, Pingping Hao, Liming Wang, Guijiang Li, Gaochao Fan, Tao Wu, Xixi Zhu, Qingyun Liu
Summary: The peroxidase-like activity of CdV2O6 nanorods has been greatly improved through modification with N, N-dicarboxymethyl perylene-diimide (PDI) as a photosensitizer. The colorless chromogenic substrate 3,3', 5,5'-tetramethylbenzidine (TMB) is used to evaluate the peroxidase-like behaviors, which rapidly changes into blue oxTMB in the presence of H2O2 in just 90 s. PDI-CdV2O6 exhibits high stability at elevated temperatures and retains more than 70% of its catalytic activity over a wide temperature range of 15 to 60 degrees C.
Article
Nanoscience & Nanotechnology
Changjoon Keum, Jiyoung Hong, Doyeon Kim, Sang-Yup Lee, Hyuncheol Kim
Summary: Research presents lysosome-targeted self-assembly of PDI derivatives as an effective and selective anticancer therapy, causing cancer cell apoptosis through lysosomal rupture; compared to chemotherapeutic agents, PDI-AAs display higher anticancer efficacy on MDR cancer cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Junmin Lee, Byung Gi Kim, Dong Hwan Wang
Summary: In order to improve the efficiency of light sensing and energy conversion devices, the interfacial defects in perovskite devices need to be controlled. This study investigates the effects of an organic-small-molecule intermediate layer, PDINN, on the performance of perovskite devices. The performance characteristics are analyzed under different illuminance conditions.
Article
Materials Science, Multidisciplinary
Shuting Zhang, Xiaoli Zhang, Zhimeng Wang, Lizhu Yao, Lei Shi
Summary: The SAPDI/Bi4O7 composites, prepared by modifying Bi4O7 with self-assembled perylene diimide (SAPDI), showed accelerated transfer of photogenerated electrons due to the synergistic interaction between Bi4O7 and SAPDI. The modified Bi4O7 effectively degraded Rhodamine B (RhB), methyl orange (MO), and methylene blue (MB) dyes, especially RhB, with a degradation rate 51.5 times higher than that of pure Bi4O7. After four recycling experiments, the degradation performance remained at 80%, indicating good stability of the catalyst. Superoxide radicals (center dot O-2(-)) were found to be the main active species in the photocatalytic process, and the photoinduced charge transfer mechanism belonged to type II based on the electronic band structure.
Article
Chemistry, Analytical
Yijian Zhao, Weilian Zheng, Mengyu Liao, Shuai Zhou, Weiheng He, Ming Liu, Zhiyi Yao
Summary: A cationic perylene probe was synthesized for sensitive determination of tartrazine. The probe exhibited excellent sensing performance, with detection and quantification limits as low as 2.42 and 8.07 nmol L-1, respectively. The high binding affinity between the probe and tartrazine allowed for great anti-interference capacity. Additionally, the approach was successfully visualized using portable devices and applied to monitor tartrazine in various food condiments.
Article
Chemistry, Physical
Sanjukta Parida, Sanjib K. Patra, Sabyashachi Mishra
Summary: The pi-conjugated supramolecular polymers have gained popularity in materials chemistry and biomedicine due to their self-assembling behavior. This study provides a detailed account of the electronic structure and bonding through quantum theory and non-covalent interactions in oligomers of perylene, perylene diimide, and thionated-PDI. The analysis reveals the presence of electrostatic interactions playing a crucial role in the self-assembly process.
Article
Biochemistry & Molecular Biology
Peiyuan Su, Guangliu Ran, Hang Wang, Jianing Yue, Qingyu Kong, Zhishan Bo, Wenkai Zhang
Summary: The research on perylene diimide (PDI) aggregates has effectively promoted their applications in organic photovoltaic solar cells and fluorescent sensors. In this study, a PDI trimer with different absorption and fluorescence properties in the presence of water in the mixed solvent of THF is investigated. The results show that the hydrophobicity of PDI trimer plays a crucial role in its aggregate properties and provides guidance for the design of PDI-based organic photovoltaic solar cells.
Article
Chemistry, Applied
Ke Xu, Juan Hu, Kaihong Lu, Mingliang Wu, Huan Lu, Jianing Yi, Di Wu, Jianlong Xia
Summary: The study explored the use of ethylene-fused PDI oligomers as alternative building blocks and designed the TPE-4PDI2 non-fullerene acceptor with high photovoltaic conversion efficiency. The results suggest that PDI2 is a promising building block for constructing high-performance NFAs and provide an effective molecular design method to enhance the PCE of PDI-based non-fullerene OSCs.
Article
Chemistry, Applied
Mi Yan, Xue Shen, Shuning Zhong, Mengxue Diao, Changhui Zhao, Yanyang Xu, Tiehua Zhang
Summary: A system based on PDI-PBA was developed for sensitive detection and discrimination of tea polyphenols by utilizing dynamic borate ester bonds. The discrimination was achieved by analyzing the fluorescence quench ratios and the unique chemical structures of different tea polyphenols.
Article
Chemistry, Inorganic & Nuclear
Jiayu Tao, Jiuxuan Zhang, Yuting Song, Jian Liu, Hai-Jun Xu
Summary: Perylene diimides (PDIs) are important photoactive materials with excellent electrical and photophysical properties. Two PDI derivatives with unsymmetrical N-substitution of amine and ester-bridge were synthesized and characterized. The PDIs showed good potential for applications in organic devices such as solar cells and organic field-effect transistors.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Jinyuan Liu, Rong Wang, Bin Wang, Mengmeng Zheng, Ruizhe Yang, Xingwang Zhu, Yanhua Song, Ming Cheng, Hui Xu, Huaming Li
Summary: This study successfully fabricated a series of perylene diimide/mesoporous graphitic carbon nitride all-organic composites with spatial stereostructure via in-situ electrostatic assembly. The composites exhibited outstanding light absorption properties and efficient separation and migration abilities of photocarriers, providing ideas for constructing organic catalysts with high photocatalytic performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sayak Subhra Panda, Kirill Shmilovich, Nicholas S. M. Herringer, Nicolas Marin, Andrew L. Ferguson, John D. Tovar
Summary: This study explores the self-assembly of PDI-amino acid conjugates and reveals the significant impact of the distance between amino acids and the π-core on the photophysical properties through computational guidance and experimental validation. The simple substitution of amino acids can significantly alter the electronic properties, and molecular dynamics simulations uncover different self-assembled structures.
Article
Chemistry, Physical
Eunji Kim, Byeong-Joo Lee, Kathleen Maleski, Yoonjeong Chae, Yonghee Lee, Yury Gogotsi, Chi Won Ahn
Summary: This study presents a method for fabricating on-chip symmetric MSCs with coplanar interdigitated electrodes using focused-ion-beam process and carbon nanotube electrodes. The micro supercapacitors produced have high areal capacitance with narrow gaps between electrode fingers, while electron beam lithography and photolithography are utilized to create ultra-small footprint devices.
Article
Chemistry, Physical
Yong-Jae Kim, Seon Joon Kim, Darae Seo, Yoonjeong Chae, Mark Anayee, Yonghee Lee, Yury Gogotsi, Chi Won Ahn, Hee-Tae Jung
Summary: Understanding the etching mechanisms of MXene and the influence of etchants on structural features and defects are crucial for improving MXene properties. This study visualizes the etching behavior of the Ti3AlC2 MAX phase at the atomic scale and reveals the etching mechanism for the first time. Differences in etching behavior among different etchants were also observed.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jae Yeol Park, Yoonsu Shim, Khoi Phuong Dao, Sang-Gil Lee, Jacob Choe, Ho Jun Lee, Yonghee Lee, Yuseon Choi, Joon Ha Chang, Seung Jo Yoo, Chi Won Ahn, Wonyoung Chang, Chan-Woo Lee, Jong Min Yuk
Summary: This study investigated copper antimony sulfide as a sodium storage material, revealing its nonequilibrium sodium insertion pathway through various techniques. Valuable insights were provided for sodium storage in ternary metal sulfides, including the use of alloying elements.
Article
Nanoscience & Nanotechnology
Jinkyu Song, Mee-Ree Kim, Youngtae Kim, Darae Seo, Kyungryul Ha, Tae-Eun Song, Wan-Gyu Lee, Yonghee Lee, Ki-Chul Kim, Chi Won Ahn, Hee Han
Summary: This study reports a method for fabricating junctionless Cu nanowire networks and investigates their properties on flexible substrates. The method involves the formation of a nanostructured Ru seed layer on the substrate, followed by direct electroless deposition of Cu. The research findings demonstrate that the transmittance and sheet resistance of the nanowire networks can be controlled by adjusting the density of Ru nanowires or the electroless deposition time. Moreover, the nanowire networks exhibit excellent durability and heating performance.
Article
Electrochemistry
Darae Seo, Mee-Ree Kim, Jin Kyu Song, Eunji Kim, Jaseung Koo, Ki-Chul Kim, Hee Han, Yonghee Lee, Chi Won Ahn
Summary: In this study, 1D hollow Ti3C2Tx MXene/carbon nanofibers were fabricated and used as anode materials in Li-ion batteries (LIBs). Compared to traditional 2D MXene electrodes, the hollow MX/C nanofibers showed a larger specific surface area and higher energy density in LIBs. This research indicates that the hollow MX/C nanofiber electrode is a promising anode material for high-performance LIBs.
Article
Multidisciplinary Sciences
Sen Gao, Sanghyun Hong, Soohyung Park, Hyun Young Jung, Wentao Liang, Yonghee Lee, Chi Won Ahn, Ji Young Byun, Juyeon Seo, Myung Gwan Hahm, Hyehee Kim, Kiwoong Kim, Yeonjin Yi, Hailong Wang, Moneesh Upmanyu, Sung-Goo Lee, Yoshikazu Homma, Humberto Terrones, Yung Joon Jung
Summary: Researchers have successfully synthesized highly dense and vertically aligned sub-5 nm silicon nanowires with unique lattice reduction and significant phonon and electronic confinement effects. The study provides insights into the chemistry and physics of highly confined silicon quantum nanostructures, and explores their potential applications in nanoelectronics, optoelectronics, and energy systems.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Sanghee Nam, Manmatha Mahato, Kyle Matthews, Robert W. Lord, Yonghee Lee, Pitchai Thangasamy, Chi Won Ahn, Yury Gogotsi, Il-Kwon Oh
Summary: This study reports a new method of growing bimetallic cobalt-manganese organic framework on the MXene surface, which achieves high stability in open structured applications by enhancing oxidation resistance and electrocatalytic properties.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hwajin Yun, Yoonjeong Chae, Eunji Kim, Hong Ki Kim, Sukhyeun Jang, Mu-Hyun Baik, Chi Won Ahn, Yonghee Lee
Summary: This study reports a simple but effective strategy to enhance the stability of delaminated MXenes by passivating vulnerable edges with heterocyclic aromatic amines. The functionalized pyrrole MXenes exhibit long-term anti-oxidation in aqueous solutions and higher electrochemical performance as a supercapacitor.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mousumi Garai, Manmatha Mahato, Sanghee Nam, Eunji Kim, Darae Seo, Yonghee Lee, Van Hiep Nguyen, Saewoong Oh, Pradeep Sambyal, Hyunjoon Yoo, Ashhad Kamal Taseer, Sheraz Ali Syed, Hee Han, Chi Won Ahn, Jaehwan Kim, Il-Kwon Oh
Summary: A novel MXene-based electro-ionic artificial muscle is reported, which utilizes a titanium carbide hybrid nanoarchitecture to anchor a manganese-based metal-organic framework. The developed artificial muscle exhibits high bending displacement, ultrafast response time, wide frequency response, and exceptional stability. It is successfully demonstrated to mimic eye motions in a doll.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Eunji Kim, Jinkyu Song, Tae-Eun Song, Hyeri Kim, Yong-Jae Kim, Yeon-Wha Oh, Sanghee Jung, Il-Seok Kang, Yury Gogotsi, Hee Han, Chi Won Ahn, Yonghee Lee
Summary: This work presents a facile and reliable process for manufacturing on-chip and flexible microsupercapacitor devices. The microfabrication process based on photolithography and solution process enables the fabrication of MXene electrodes on flexible substrates. The resulting microsupercapacitors exhibit excellent capacitance and energy density, as well as customizable features.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
So Yeong Jeong, Yongmin Jeon, Eunji Kim, Gibok Lee, Yeon-Wha Oh, Chi Won Ahn, Eun Hae Cho, Yonghee Lee, Kyung Cheol Choi
Summary: Flexible see-through displays, using MXene material as electrodes, have been developed for various applications, offering improved information flow, safety, situational awareness, and overall user experience. The ultraflexible and environmentally stable MXene-based OLED display can stably operate in air condition for over 2000 h, endure repetitive bending deformation, and maintain environmental stability when exposed to wet surroundings. A matrix-addressable transparent OLED display was also demonstrated that could display letters and shapes.
Article
Mechanics
Yeeun Kim, Eunji Kim, Dohoon Kim, Chi Won Ahn, Byoung Soo Kim, Kyung Hyun Ahn, Yonghee Lee, Jun Dong Park
Summary: MXene, a two-dimensional material with a distinct structure and remarkable mechanical and electrical capabilities, has attracted significant attention. To improve and compensate for its inherent weaknesses, researchers have combined MXene with various polymer additives. Polyethylene glycol (PEG) enhances MXene dispersion and viscoelastic properties, polyethylenimine (PEI) destabilizes MXene to form a viscoelastic network, and polyacrylic acid (PAA) forms a dense network structure through hydrogen bonding. These findings provide valuable insights for the design of MXene-based composites with optimal rheological properties for specific processes like 3D printing and coating.
KOREA-AUSTRALIA RHEOLOGY JOURNAL
(2023)
Article
Chemistry, Physical
Syam Kandula, Eunji Kim, Chi Won Ahn, Jinwoo Lee, Bongjun Yeom, Seung Woo Lee, Jinhan Cho, Hyung-Kyu Lim, Yonghee Lee, Jeong Gon Son
Summary: Anode-free sodium-metal batteries are a promising alternative for high-end batteries due to their high theoretical capacity, low cost, and high abundance. However, they suffer from poor long-term cyclic stability. In this study, mechanically resilient MXene/CNT nano-accordion frameworks (NAFs) were engineered to address this issue and enable efficient sodium deposition.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yoojoo An, Nayeon Kim, Soo Yeong Hong, Arum Jung, Eunji Kim, Yonghee Lee, Jinhan Cho, Bongjun Yeom, Jeong Gon Son
Summary: With the development of human-friendly wearable devices, a composite structure combining 2D cellular graphene/MXene/carbon nanotubes and 3D cellular melamine foam has been introduced to create a stretchable framework for lithium metal electrodes. The hierarchical interpenetrated reentrant microcellular structure allows for stable structural deformability while maintaining high electrical conductivity and mechanical stability. This structure shows great potential for the design of stretchable lithium metal electrodes for high energy density batteries.
Article
Chemistry, Physical
Yonghee Lee, Seon Joon Kim, Yong-Jae Kim, Younghwan Lim, Yoonjeong Chae, Byeong-Joo Lee, Young-Tae Kim, Hee Han, Yury Gogotsi, Chi Won Ahn
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
