Article
Chemistry, Applied
Sopan M. Wagalgave, Sheshanath Bhosale, Avinash L. Puyad, Jing-Yu Chen, Lathe Jones, Jing-Liang Li, Akhil Gupta, Sidhanath Bhosale
Summary: Two new organic semiconductors coded as W5 and W6, based on indoline and naphthalene diimide building blocks, were designed with a donor-acceptor-donor structural format. W6, featuring an additional thiophene ring, exhibited improved light-harvesting properties and a narrower optical band gap compared to W5.
Article
Physics, Applied
Maomao Zhang, Xueyi Shi, Xinyu Mu, Luxia Wang, Kun Gao
Summary: This study theoretically investigates the re-excitation dynamics of a cold charge transfer state at organic donor/acceptor interfaces using a femtosecond electric pump pulse. It is found that the pulse energy can push the relaxed CCT state to different hot CT states, and the application of a driving field can dissociate the HCT states into free charges, with HCT 2 state being more easily dissociated compared to HCT 1 state.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Jiu-Xun Sun, Hong-Chun Yang, Yang Li, Hai-Juan Cui
Summary: An analytical model for high-efficiency organic solar cells is proposed, taking into account various physical factors that have been ignored in previous models. The model is validated with experimental data and provides explanations for the sublinear relationship between current density and light intensity, as well as the effects of energetic disorder in bulk heterojunction organic solar cells.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Environmental Sciences
M. Imran, Eun-Bi Kim, Abdullah, M. Shaheer Akhtar, Ahmad Umar, Dong-Heui Kwak, Sadia Ameen, Sotirios Baskoutas
Summary: The study focuses on the synthesis of an organic semiconductor with extended π-conjugation for the use of photocatalysis in acquiring photon energy from sunlight to clean the environment, particularly for the purification of contaminants from water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Weijun Wu, Andrew E. E. Sifain, Courtney A. A. Delpo, Gregory D. D. Scholes
Summary: This study theoretically investigates the quantum dynamics of a donor-acceptor cavity system and finds that polaritons have the potential to enhance free charge carrier generation on an ultrafast timescale, but are suppressed by internal conversion and cavity loss on a longer timescale.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Courtney A. DelPo, Saeed-Uz-Zaman Khan, Kyu Hyung Park, Bryan Kudisch, Barry P. Rand, Gregory D. Scholes
Summary: Enhanced delocalization is beneficial for absorbing molecules in organic solar cells, and polaritons offer exceptional delocalization that can improve the efficiency of bilayer organic photovoltaics by aiding in exciton delivery to the donor-acceptor interface. The decay of polaritons in bilayer cavities shows an additional pathway through charge transfer, indicating that the charge transfer from the polariton is fast enough to outcompete decay to the ground state.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Md Habibur Rahaman, Borong Sang, Md. Anower Hossain, Bram Hoex, Pablo Mota-Santiago, Valerie D. Mitchell, Ashraf Uddin, John A. Stride
Summary: Functionalization of the interface between the electron transport layer, organic polymeric donor, and non-fullerene acceptor bulk heterojunction layer in inverted structure photovoltaic devices is an effective strategy for improving performance. This study demonstrates that the interfacial nanomorphology of PTB7-Th and IEICO-4F on a bilayer of ultrathin titanium oxide (TiO2) passivated sol-gel grown zinc oxide (ZnO) electron transport layer can be improved, leading to enhanced overall organic photovoltaic device performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Delun Chen, Xue Zou, Fan Dong, Chao Zhen, Dan Xiao, Xiaohong Wang, Qiang Wu, Yang Cao, Jinchun Tu
Summary: Introducing the intramolecular donor-acceptor compensated semiconductor I-D/A ZnO with the assistance of ascorbic acid has been shown to enhance the carrier lifetime and reduce electron transfer resistance. The photoelectrochemical biosensor based on this material exhibited high sensitivity, low limit of detection, and excellent anti-interference properties when detecting glucose.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
J. Man, Z. Liu
Summary: In this study, ternary organic photovoltaics were fabricated by incorporating PTB7-Th into PTQ10:Y6 binary films. The results showed that although the VOC decreased, the JSC and PCE were significantly enhanced compared to the binary devices.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Priyanka Mishra, Pichiah Saravanan, Gopinath Packirisamy
Summary: Researchers have developed a novel FRET-active ZnO/Ag@Ag4V2O7 hybrid material for promoting the photocatalytic oxidation of methane. This hybrid material enhances the photoredox ability through FRET and has a higher positive potential, facilitating the methane oxidation reaction. Experimental results show that the photocurrent density of this material under visible illumination is 300 times higher than that of the individual materials, and it exhibits good apparent quantum efficiency and solar-to-fuel efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
M. D. Shahjahan, Takuya Okamoto, Lata Chouhan, Bhagyashree Mahesha Sachith, Narayan Pradhan, Hiroaki Misawa, Vasudevanpillai Biju
Summary: In this study, we demonstrate the successful fabrication of multiple heterojunction structures in perovskite crystals using laser-assisted band gap engineering. This allows for efficient transport and trapping of photogenerated charge carriers. The developed donor-acceptor halide perovskites have potential applications in photovoltaic, photonic, and electronic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Renquan Guan, Lijing Wang, Dandan Wang, Kexue Li, Huaqiao Tan, Yunning Chen, Xueying Cheng, Zhao Zhao, Qingkun Shang, Zaicheng Sun
Summary: The Coulomb interactions between excited electrons and holes play a crucial role in the photo-physical processes in 2D semiconductors. In the BP/TiO2 heterojunction, exciton dissociation is driven by the energy difference between the conduction bands, leading to enhanced photocatalytic efficiency through effective exciton dissociation, interfacial charge separation, and charge-carrier accumulation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Natsuki Kumagai, Toshiki Shimizu, Hiroki Minoda, Mikimasa Katayama, Satoru Nakao, Toshihiko Kaji
Summary: Controlling the bulk heterojunction structure is crucial for improving the power conversion efficiency of organic photovoltaic cells. In this study, a submicrometer-thick organic photovoltaic cell consisting of metal-free phthalocyanine as the donor and fullerene as the acceptor was used to visualize the interface structure of the bulk heterojunction. Phase plate scanning transmission electron microscopy was employed to visualize the interface structure with nanometer-scale resolution. The observation revealed the formation of a hybrid layer followed by the growth of a phase-separated ordered bulk heterojunction.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Biophysics
Min Chen, Hui Meng, Fangjing Mo, Jiang Guo, Yingzi Fu
Summary: The signal enhancement photoelectrochemical immunoassay system induced by a composite of electron donor-acceptor with Schottky heterojunction was designed for quantitative detection of CEA. The proposed immunoelectrode showed dynamic ranges of 0.5 fg mL-1 to 10 pg mL-1 and 10 pg mL-1 to 1 µg mL-1 with a detection limit of 0.17 fg mL-1. This PEC strategy with acceptable selectivity and stability can potentially be applied to detect other targets by choosing appropriate target recognition units.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Polymer Science
Chan Im, Sang-Woong Kang, Jeong-Yoon Choi, Jongdeok An
Summary: The research investigates the application of non-fullerene type acceptors in the field of photovoltaics, revealing their potential as electron donors. Through spectrally resolved photovoltaic characters and transient absorption spectroscopy analysis, the pathways of NFA-originated excitons and origin-dependent decay behaviors were disclosed, deepening the understanding of the application of new material classes in renewable energy strategies.
Article
Chemistry, Physical
Minsung Kim, Jinseon Park, Sang Hoon Kim, Jung-Hyun Lee, Keunhong Jeong, Jongsik Kim
Summary: In this study, UiO-66 and its analogues functionalized with -NH2/-SO3H were synthesized to generate ZrO2 poly-crystallites on N/S-doped carbon catalysts via pyrolysis. The catalysts contained different concentrations of Lewis basic N/S dopants, resulting in varying strengths and areas of Bro·nsted acidic -OH and Lewis acidic Zr4+ species. The results showed that adjusting the EBA/SLA ratio can promote the production of ·OH via catalytic H2O2 homolysis.
Article
Engineering, Environmental
Sung-Joon Park, Seung Su Shin, Joon Hee Jo, Chan Hee Jung, Hosik Park, You-In Park, Hyung-Ju Kim, Jung-Hyun Lee
Summary: A new Cs-adsorptive membrane was developed using compactly assembled Cs-adsorptive Prussian blue particles. This membrane demonstrated effective Cs removal and excellent performance in removing radioactive Cs, making it suitable for treating actual radioactive wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Seung Hyun Kang, Jin Young Seo, Hyeon Ji Oh, Jung-Hyun Lee, Albert S. S. Lee, Kyung-Youl Baek
Summary: Thermally switchable ladder-like poly(silsesquioxane) (LPSQ) adhesives were synthesized and used as reversible adhesion materials through the Diels-Alder reaction. The reversible features of LPSQ polymer blended with different diene crosslinkers were evaluated. LPSQ adhesives with long alkyl crosslinkers demonstrated tremendous reversibility in thermally switchable adhesion. The chain flexibility of LPSQ side chains was experimentally and theoretically demonstrated to affect the reversible Diels-Alder and retro Diels-Alder reactions. Additionally, these thermally switchable LPSQ adhesives exhibited superior mechanical and thermal stabilities compared to commercial adhesives, making them potential materials for adhesive applications.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Biochemistry & Molecular Biology
Ga Yeon Won, Ahrumi Park, Youngmin Yoo, You-In Park, Jung-Hyun Lee, In-Chul Kim, Young Hoon Cho, Hosik Park
Summary: Adding co-solvents to the polymer dope solution is a common method for tuning the morphology and separation performance of membranes. In this study, polybenzimidazole (PBI) membranes with high separation properties and stability were synthesized for organic solvent nanofiltration (OSN) applications by adding acetonitrile (MeCN) to the dope solution and crosslinking with dibromo-p-xylene. The PBI/MeCN membranes exhibited superior rejection properties and stable permeances for various organic solvents, demonstrating their applicability in fine chemical industries.
Article
Chemistry, Multidisciplinary
Sungkwon Jeon, Hansoo Kim, Juyeon Choi, Jeong F. Kim, Ho Bum Park, Jung-Hyun Lee
Summary: A highly selective and pH-resistant thin film composite membrane is fabricated by synthesizing a crosslinked poly(quaternary ammonium) selective layer on a polyethylene support. This membrane exhibits a highly selective molecular density and exceptional pH stability under extreme acidic and alkaline conditions, making it a promising candidate for applications in harsh pH environments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yeon Jae Park, Dong Ho Kim, Jung-Hyun Lee, Heon Phil Ha, Dong Wook Kwon
Summary: A series of VxNbMoTi catalysts were synthesized to improve the SCR performance and SO2 durability of vanadium-based catalysts at low temperatures. The addition of Nb-Mo enhanced the activity and resistance against SO2 and H2O. Physicochemical analysis showed increased NH3 adsorption, improved Vn+ (n = 3, 4) fraction, increased oxygen vacancies, and labile oxygen. Therefore, introducing Nb-Mo improved SCR performance and enhanced resistance to SO2 and H2O.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jin Young Seo, Jung-Hyun Lee, Kie Yong Cho, Keunhong Jeong, Kyung-Youl Baek
Summary: This study presents a novel polymeric buffer that enhances the catalytic ability of metal-organic framework (MOF) catalysts without contamination. The optimized polymer buffer effectively degrades nerve-agent simulants in the presence of UiO-66, while maintaining its catalytic activity for multiple cycles. The polymeric composite coated on a cotton substrate also exhibits excellent detoxification performance in highly humid conditions (RH 99%), suggesting its potential in developing chemical protective textiles against chemical warfare agents.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Chemical
Min Gyu Shin, Wansuk Choi, June Huh, William D. Mulhearn, Jung Sun Hwang, Christopher M. Stafford, Jeong F. Kim, Jung-Hyun Lee
Summary: In this study, the Hansen solubility parameters (HSPs) of crosslinked PA membranes were determined by quantifying the swelling degrees of a molecular layer-by-layer-assembled, model PA nanofilm in various solvents via in-situ atomic force microscopy. The newly determined HSPs of the PA layer, combined with free volume and Flory-Huggins solution theories, were incorporated into the solution-diffusion model, accurately predicting the permeance of 16 different solvents and providing practical and fundamental insights into solvent transport in PA membranes along with robust tools for characterizing nanofilm properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sung-Joon Park, Myung-Seok Lee, Mehmet Emin Kilic, Junil Ryu, Hosik Park, You In Park, Hyoungsoo Kim, Kwang-Ryeol Lee, Jung-Hyun Lee
Summary: Interfacial polymerization is used to fabricate functional nanofilms for various applications by assembling polymer nanofilms at the water-oil interface in the presence of surfactants. Through in situ visualization and computational simulations, this study reveals the critical role of Marangoni instability induced by surfactants in structurally regulating nanofilms. Despite different instability-triggering mechanisms, the delicate control of surfactants enables the fabrication of defect-free nanofilms with ultra-permselectivity.
Article
Engineering, Chemical
Wansuk Choi, Min Gyu Shin, Gi Wook Lee, Donguk Kim, Cheol Hun Yoo, Jong Suk Lee, Hyun Wook Jung, Jung-Hyun Lee
Summary: By implanting a biomimetic sharkskin pattern on the membrane surface, biofouling can be reduced, and membrane performance can be improved. The antibiofouling effect of the membrane is enhanced with increasing pattern orientation angle. These findings provide fundamental insights into the antibiofouling mechanisms of uniaxially and/or biomimetically patterned membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Seokhyun Lee, Heon Phil Ha, Jung-Hyun Lee, Jongsik Kim
Summary: TiO2-supported nickel vanadates modified with SOZ2- (Z=3-4) were found to enhance the acidity and redox cycling efficiency in deNOX reactions. Among them, Ni1-S exhibited the highest activity and oxygen mobility, and promoted the degradation of AS/ABS and resistance to hydrothermal aging. The addition of Sb2O5 further improved the water resistance and AS/ABS decomposition rate of Ni1-Sb-S catalyst.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Donghee Gueon, Miguel A. Gonzalez, Kenneth J. Takeuchi, Esther S. Takeuchi, Amy C. Marschilok, Elsa Reichmanis
Summary: For the past two decades, conversion and alloying-type materials have been considered as the successor to commercially available graphite anodes. However, the inherent interfacial chemical instabilities associated with these materials make it difficult to use them in current electrode fabrication techniques. Therefore, achieving the high theoretical capacity and commercial viability of these materials requires careful manipulation of interfacial chemical interactions.
ACCOUNTS OF MATERIALS RESEARCH
(2023)
Article
Engineering, Environmental
Sung-Joon Park, Myung-Seok Lee, Heewoong Yoon, Jae Hong Kim, Sungkwon Jeon, Seung Su Shin, Minuk Yang, Jieun Choi, Jiwon Seo, Jung-Hyun Lee
Summary: A biofouling-resistant and high-performance polyamide thin-film composite membrane was successfully fabricated by adding a biomimetic antimicrobial peptoid during the interfacial polymerization process. The resulting membrane exhibited superior separation performance and long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Richard I. Foster, Hyung-Ju Kim, Sung-Jun Kim, Chan Woo Park, Hee-Man Yang, Jung-Hyun Lee
Summary: Self-propelling shuttles functionalized with Prussian blue are capable of efficiently removing radioactive caesium from aqueous phases during nuclear accidents and emergency scenarios.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Richard I. Foster, Hyung-Ju Kim, Sung-Jun Kim, Chan Woo Park, Hee-Man Yang, Jung-Hyun Lee
Summary: Self-propelling shuttles functionalised with Prussian blue were developed for efficient removal of radioactive caesium. The shuttles exhibited high adsorption efficiency and loading capacity, and could achieve self-motion through the Marangoni effect. This technology provides a rapid and effective response to nuclear accidents.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)