Article
Chemistry, Physical
Chunguang Ren, Zhengshuo Wang, Hanlin Ou, Tianjie Wang, Zhipeng Zhao, Yuting Wei, Hua Yuan, Yeqiang Tan, Wang Zhang Yuan
Summary: A kind of amorphous RTP material with ultralong lifetime is fabricated by covalently bonding sodium alginate with arylboronic acid in aqueous phase. The resulting polymer film exhibits distinctive RTP performance with excitation-dependent emissions from cyan to green. These smart materials are successfully applied in data encryption and anti-counterfeiting due to the color-tunable and stimuli-responsive afterglows.
Article
Chemistry, Multidisciplinary
Tian Sun, Shuo Li, Lei Zhang, Yuxi Xu
Summary: Efficient and scalable production of high-quality and processable two-dimensional (2D) triazine polymers has been achieved through a convenient noncovalent functionalization strategy. The resulting nanosheets exhibit excellent water dispersibility and processability, along with optimized band structure and enhanced photocatalytic hydrogen evolution rate.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Ye Shi, Erin Askounis, Roshan Plamthottam, Tom Libby, Zihang Peng, Kareem Youssef, Junhong Pu, Ron Pelrine, Qibing Pei
Summary: Dielectric elastomers (DEs) are capable of generating mechanical work in response to an electric field. In this study, a processable, high-performance dielectric elastomer (PHDE) with a bimodal network structure was synthesized, and its electromechanical properties were tailored by adjusting cross-linkers and hydrogen bonding. The PHDE exhibited high strains without prestretching and multilayer actuators were fabricated using a dry stacking process.
Article
Chemistry, Physical
Deyang Yu, Linqin Mu, Xu Feng, Feng Lin, Louis A. Madsen
Summary: Polymer binders play a crucial role in battery electrodes, and a study has found that a rigid-rod polymer binder called PBDT can provide comparable performance to the traditional binder PVDF. Moreover, PBDT has the potential to eliminate fluorine from the electrode and reduce the need for organic solvents in processing, making it a sustainable option for advanced batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhixiao Xu, Matthew Li, Wenyuan Sun, Tian Tang, Jun Lu, Xiaolei Wang
Summary: An ultrafast, stable, and high-loading polymer anode for aqueous Zn-ion batteries and capacitors has been developed through the engineering of both the electrode and electrolyte. This polymer anode exhibits a low discharge potential, near-theoretical capacity, ultrahigh-loading capability, ultrafast rate, and ultralong lifespan.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Brian J. Eckstein, Ferdinand S. Melkonyan, Gang Wang, Binghao Wang, Eric F. Manley, Simone Fabiano, Alexandra Harbuzaru, Rocio Ponce Ortiz, Lin X. Chen, Antonio Facchetti, Tobin J. Marks
Summary: A new series of electron-transporting copolymers based on the NBA building block were synthesized and characterized, demonstrating the key role of backbone conformation in electronic delocalization and transport. These copolymers exhibited excellent electron mobilities and strong aggregated morphologies.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Akihiro Maeda, Ruiyuan Liu, Kilho Yu, Shinyoung Lee, Kyohei Nakano, Masahito Takakuwa, Shipei Zhang, Keisuke Tajima, Kenjiro Fukuda, Shinjiro Umezu, Takao Someya
Summary: Recent progress in organic photovoltaics (OPVs) emphasizes the importance of laboratory-scale fabrication in ambient air using solution processes. However, the effect of the existence of both ambient air and light during the formation of a photoactive layer on the performance of fabricated devices has not been fully elucidated. It was found that photoactive layer formation in completely dark conditions enables air-processable OPVs with a high power conversion efficiency, highlighting the impact of light and air coexistence on device performance.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Article
Chemistry, Physical
Sheila M. Goodman, Junjin Che, Wilfrid Neri, Jinkai Yuan, Anthony B. Dichiara
Summary: In this study, flexible and transparent dielectric films were successfully synthesized by mixing TEMPO-oxidized cellulose nanofibrils with colloidal poly(vinylidene fluoride) nanoparticles using non-toxic water as solvent. These films exhibited high energy density and stable power density, making them suitable for flexible and transparent energy storage devices.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhengshuo Wang, Anze Li, Zihao Zhao, Tianwen Zhu, Qiang Zhang, Yongzhi Zhang, Yeqiang Tan, Wang Zhang Yuan
Summary: This study developed a new doped polymer film based on sodium alginate and aromatic carboxylates, which can be easily fabricated through the aqueous solution process. The film is flexible, transparent, and re-dissolvable, and it can exhibit multi-tunable afterglow colors from blue to red and even white. Better controllability can be achieved through co-doping and triplet-to-singlet Forster resonance energy transfer (TS-FRET). The film demonstrates advanced anti-counterfeiting capabilities based on its excitation- and time-dependent as well as TS-FRET-mediated afterglow colors.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Chen Yang, Yihan Kuang, Jiangen Zheng, Liyu Liu, Guo Chen
Summary: This study proposes a strategy for bubble transport in an asymmetric hexagonal cage (ASHC) under antibuoyancy conditions. By adjusting the structural parameters of the cage, the transport efficiency of bubbles can be greatly improved. Additionally, the study demonstrates that long-distance transport and controllable merging of bubbles can be easily achieved by cascading multistage ASHC structures. This research provides a simple, low-cost, extensible, and versatile construction for bubble transport for both fundamental research and practical applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jan Saska, Nikolay E. Shevchenko, Goktug Gonel, Zaira Bedolla-Valdez, Rachel M. Talbot, Adam J. Moule, Mark Mascal
Summary: This study introduces two new solution processable molecular dopants with the highest EA values reported yet, based on the CN6-CP structure. These dopants, with EA values up to 5.75 eV, significantly enhance film conductivity for a range of polymers. The increased EA of these stronger dopants enables controlled solution doping at high levels for various alternating co-polymers in organic electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Polymer Science
Fong-Yi Cao, Ching-Li Huang, Tzu-Yang Cheng, Hsiao-Ju Cheng, Tung-Kung Wu, Yen-Ju Cheng
Summary: Conjugated polymers (CPs) have been used as photocatalysts for hydrogen evolution, but reproducibility of the materials is a challenge due to complicated chemical modifications. In this study, a solution processable PBDB-T polymer is directly deposited on a glass substrate to form a thin film that shows higher hydrogen evolution rate (HER) due to enhanced interfacial area. The 0.1 mg-based PBDB-T thin film exhibits an unprecedentedly high HER of 120.90 mmol h(-1) g(-1).
Article
Polymer Science
Yafei Ding, Yingman Zhu, Heng Wang, Yunfei Wang, Xiaodan Gu, Xiaohong Wang, Longzhen Qiu
Summary: Blending semiconductor polymers with insulator polymers is an effective strategy for preparing high-performance stretchable electronics. Optimizing the solution-processable technique and controlling the semiconductor molecular weight are promising strategies for developing blend films with good electrical and mechanical properties.
Article
Multidisciplinary Sciences
Christopher L. Anderson, He Li, Christopher G. Jones, Simon J. Teat, Nicholas S. Settineri, Eric A. Dailing, Jiatao Liang, Haiyan Mao, Chongqing Yang, Liana M. Klivansky, Xinle Li, Jeffrey A. Reimer, Hosea M. Nelson, Yi Liu
Summary: Topochemical polymerization reactions can produce ultra-high molecular weight crystalline polymers. This study demonstrates a family of para-azaquinodimethane compounds that undergo facile visible light and thermally initiated polymerization in the solid state, displaying excellent functional group tolerance and superior capacitive energy storage properties.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Q. A. Alsulami, M. A. Hussein, S. Z. Alsheheri, E. A. Elshehy, W. A. El-Said
Summary: This study focuses on the industrial application of silica/thiourea-formaldehyde composite monoliths for recovering silver and mercury ions from contaminated samples. The fabricated composite shows unique surface properties and high adsorption capacities for the target ions. The findings demonstrate the potential of the designed composite for efficient and reproducible adsorption of silver and mercury ions in environmental and waste disposal samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Yoori Sung, Eul-Yong Shin, Yong-Young Noh, Jung-Yong Lee
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Green & Sustainable Science & Technology
Hwan-Jin Choi, Changsoon Cho, Sangwon Woo, Jung-Yong Lee, Yeong-Eun Yoo, Minwoo Jeon, Geon-Hee Kim, Tae-Jin Je, Eun-chae Jeon
Summary: Various structural patterns can control light properties, with a compound parabolic concentrator enhancing solar cell efficiency. A novel manufacturing process for a small CPC device was developed utilizing ultra-fine planing and injection molding for mass production. The efficiency of solar cells was enhanced by about 10% with the CPC device.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Nakyung Kim, Mingue Shin, Seongmoon Jun, Bongjun Choi, Joonyun Kim, Jinu Park, Hyunseung Kim, Woochul Jung, Jung-Yong Lee, Yong-Hoon Cho, Byungha Shin
Summary: Efficient vacuum-deposited CsPbBr3 perovskite light emitting diodes (PeLEDs) are achieved by introducing a separate polyethylene oxide (PEO) passivation layer. The enhancement in photoluminescence quantum yield intensity is attributed to the passivation of interfacial defects of the perovskite by the PEO layer. Doping PEO layers with MgCl2 solves the issue of PEO's electrically insulating nature, resulting in enhanced luminance and external quantum efficiency (EQE).
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jonghyeon Noh, Geon-U Kim, Seungseok Han, Seung Jin Oh, Yeonjee Jeon, Dahyun Jeong, Sang Woo Kim, Taek-Soo Kim, Bumjoon J. Kim, Jung-Yong Lee
Summary: This study integrates multiple stretchable layers with strong bindings to achieve intrinsically SOSCs of over 11%, maintaining over 74% of the initial power conversion efficiency (PCE) when subject to 10% strain for 1,000 cycles. This high-performance and mechanical endurance demonstrate that SOSCs are one step closer toward practical utilization in wearable electronics.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Physical
Byeongsu Kim, Se-Woong Baek, Changjo Kim, Junho Kim, Jung-Yong Lee
Summary: To achieve high performance CQD/organic hybrid devices, controlling interfacial properties between CQD and organic matter is crucial. By carefully modulating the electronic band between CQD and polymer layers through inserting an interfacial layer treated with various ligands, local charge accumulation and bimolecular recombination can be suppressed, resulting in a high short-circuit current and fill factor of hybrid solar cells. The optimized CQD/polymer hybrid solar cell demonstrates high power conversion efficiency and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Changjo Kim, Irem Kozakci, Junho Kim, Sang Yeon Lee, Jung-Yong Lee
Summary: In this study, a design strategy to improve the performance of silver bismuth disulfide (AgBiS2) nanocrystal/organic hybrid solar cells is proposed by optimizing the energy level structure and charge extraction. By selecting an appropriate hole-transporting layer material and surface treatment method, the power conversion efficiency of the solar cell is increased from 3.3% to 7.1%.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junho Kim, Ki-Won Seo, SeungJae Lee, Kyungmin Kim, Changjo Kim, Jung-Yong Lee
Summary: In this study, a novel all-in-one process for exchanging ligands and halide anions in film-state is proposed to achieve facile color tuning and patterning of PeQD LEDs. The performance of PeQD LEDs is significantly enhanced by passivating the PeQD with shorter ligands. The all-in-one process is more stable in the film state and facilitates rapid color change in localized areas, enabling the fabrication of fine patterns using simple contact masks.
Article
Chemistry, Multidisciplinary
Jin-Woo Lee, Soodeok Seo, Sun-Woo Lee, Geon-U Kim, Seungseok Han, Tan Ngoc-Lan Phan, Seungjin Lee, Sheng Li, Taek-Soo Kim, Jung-Yong Lee, Bumjoon J. Kim
Summary: A series of new polymer donors (P(D)s, PhAmX), featuring a flexible spacer (PhAm-FS) based on phenyl amide, were developed to enhance the efficiency and stretchability of intrinsically stretchable organic solar cells (IS-OSCs).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Seungseok Han, Kyungmin Kim, Sang Yeon Lee, Seongjun Moon, Jung-Yong Lee
Summary: A novel stretchable film based on an over-layered liquid-metal network is proposed. An intentionally oxidized interfacial layer enables the formation of uninterrupted indium and gallium nanoclusters, creating additional electrical pathways under mechanical deformation. The films exhibit gigantic negative piezoresistivity (G-NPR), reducing resistance by up to 85% during the initial 50% stretching. The rupture of metal oxides allows the formation of liquid eutectic gallium-indium (EGaIn) and the connection of the over-layered networks to build new electrical paths.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Changjo Kim, Irem Kozakci, Sang Yeon Lee, Byeongsu Kim, Junho Kim, Jihyung Lee, Boo Soo Ma, Eun Sung Oh, Taek-Soo Kim, Jung-Yong Lee
Summary: This study proposes a facile approach to improve the mechanical stability of CQD solar cells without compromising the high power conversion efficiency. By introducing (3-aminopropyl)triethoxysilane (APTS) on CQD films, the dot-to-dot bonding is strengthened, making the treated devices robust to mechanical stress. The device maintains 88% of the initial PCE under 12,000 cycles at a bending radius of 8.3 mm and achieves a PCE of 11.04%, one of the highest PCEs in flexible PbS CQD solar cells.
Article
Chemistry, Physical
Eul-Yong Shin, So Hyun Park, Yeonjee Jeon, Kyuyeon Kim, Giseok Lee, Jung-Yong Lee, Hae Jung Son
Summary: The stretchability of PEDOT:PSS electrodes is influenced by two additives, PEG and GOPS. PEG forms hydrogen bonds with the sulfonyl groups of PSS, relieving mechanical stress in the PEDOT:PSS films. On the other hand, GOPS not only forms hydrogen bonds with PSS but also undergoes a chemical reaction to create a cross-linked structure, enhancing the stretchability of the PEDOT:PSS film. Additionally, GOPS promotes a more hydrophilic surface and improves adhesion to the upper layer in IS-OPV devices, resulting in improved stretchability and solar cell performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Correction
Chemistry, Physical
Jihwan Jo, Seonju Jeong, Dongchan Lee, Seungjin Lee, Bumjoon J. Kim, Shinuk Cho, Jung-Yong Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jihwan Jo, Seonju Jeong, Dongchan Lee, Seungjin Lee, Bumjoon J. Kim, Shinuk Cho, Jung-Yong Lee
Summary: The random mixing of donor and acceptor materials in organic solar cells is considered a breakthrough in the development of these cells. However, the vertically separated donor and acceptor structures of the cells allow for individual optimization of each material, improving charge extraction and reducing charge recombination. Additionally, the phase separation in organic solar cells enhances their stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Seungseok Han, Ki-Won Seo, Wansun Kim, Taek-Soo Kim, Jung-Yong Lee
Summary: A novel stretchable hybrid electrode (SHE) is proposed in the study, which overcomes the poor mechanical stretchability of metal thin film electrodes through grain size engineering and hybridization with conductive interlayers. The CNT-inserted SHE shows a significant decrease in resistance change in tensile and fatigue tests due to its rough surface design redistributing stress to prevent crack propagation.
Article
Materials Science, Multidisciplinary
Heeseon Lim, Sena Yang, Sang-Hoon Lee, Jung-Yong Lee, Yeunhee Lee, Andres Bethavan Situmorang, Yong-Hyun Kim, Jeong Won Kim
Summary: The molecular orientation of metal phthalocyanine molecules plays a crucial role in the performance of organic photovoltaics (OPVs), with copper phthalocyanine (CuPc) showing a stronger change in orientation compared to zinc phthalocyanine (ZnPc) under identical process conditions. This difference in orientation leads to a significant impact on the interfacial dipole orientation and energy offset at the donor/acceptor (D/A) interface, ultimately affecting the performance of the OPV device.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)