Article
Engineering, Environmental
Francesco De Bon, Rita G. Fonseca, Francesca Lorandi, Armenio C. Serra, Abdirisak A. Isse, Krzysztof Matyjaszewski, Jorge F. J. Coelho
Summary: This study reveals the scale-up of electrochemically mediated atom transfer radical polymerization (seATRP) from small to large scale. By optimizing reaction parameters and using renewable energy, self-degassing and efficient polymerizations were achieved, resulting in well-defined polymers with narrow molecular weight distributions. These findings could promote the widespread use of controlled radical polymerizations in the polymer industry.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Hemanth Maddali, Alexei M. Tyryshkin, Deirdre M. O'Carroll
Summary: This study demonstrates dual-mode polymer-based temperature sensors with a wide sensing range utilizing electrochemically doped RRa-P3HT films, allowing for optical and electrical sensing modes. The sensors exhibit a gradual thermal dedoping effect in the temperature range of 30 to 80 degrees Celsius, with a linear trend in the ratio of dedoped to doped peaks between 30 and 75 degrees Celsius, suitable for optical-mode thermal sensing.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jaco J. Geuchies, Robbert Dijkhuizen, Marijn Koel, Gianluca Grimaldi, Indy du Fosse, Wiel H. Evers, Zeger Hens, Arjan J. Houtepen
Summary: Researchers have studied the photophysics and gain properties of CdSe/CdS/ZnS core-shell-shell NPLs and found that these doped NPLs are the best performing colloidal nanomaterial gain medium reported to date, with the lowest gain threshold and broadest gain spectrum. Core-shell NPLs are at the border between quantum dots and 2D materials, with lower exciton binding energy and relatively small lateral size.
Article
Chemistry, Multidisciplinary
Zhipeng Xiang, Wenjin Li, Kai Wan, Zhiyong Fu, Zhenxing Liang
Summary: This work develops an electrochemical method to quantitatively study the aggregation behavior of methyl viologen dichloride molecules and finds that aggregation behavior can effectively regulate the molecule's energy level and redox potential. It not only provides a method to investigate molecular aggregation, but also demonstrates the feasibility to tune the performance of redox flow batteries by regulating aggregation behavior.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Xindong Liu, Peng Lei, Xiaoqing Liu, Yifan Li, Yitong Wang, Lei Wang, Qing-Dao Zeng, Yi Liu
Summary: A series of bridged multicyclic conjugated polymers were synthesized by Yamamoto polymerization, and their chemical identities were confirmed by spectroscopy and chromatography. The bridged multicyclic backbone was directly visualized by scanning tunneling microscopy, confirming the topology of the polymers. Like their cyclic monomers, these multicyclic conjugated polymers exhibit intense fluorescence due to aggregation-induced emission, and their fluorescence can be efficiently quenched by picric acid in aqueous media through the static quenching mechanism involving photo-induced electron transfer.
Article
Electrochemistry
Julie Pham, Amelie Forget, Nathalie Bridonneau, Giorgio Mattana, Eleni Stavrinidou, Samia Zrig, Benoit Piro, Vincent Noel
Summary: This study investigates the possibility of producing biofuel cell electrode materials in vivo by directly injecting reagents into plant tissues. Model electroactive substances are introduced into a tobacco leaf and their distribution is traced using in situ electrochemical measurements. The injection of specific polymer precursors and application of polarization triggers a localized polymerization reaction in the vascular system, demonstrating the potential for generating electmactive organic macromolecules inside plants.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yogendra Nailwal, Manisha Devi, Santanu Kumar Pal
Summary: In this study, luminescent conjugated microporous polymers (CMPs) based on truxene core were successfully synthesized and utilized for the selective and sensitive detection of picric acid (PA) among various nitroaromatic explosives.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Physics, Applied
Shun-ichiro Ito, Kaito Kanahashi, Hiromichi Ohta, Hiroshi Ito, Taishi Takenobu, Hisaaki Tanaka
Summary: The intermolecular interaction between a conducting polymer and a dopant molecule plays a crucial role in determining the structure and electronic properties of doped films. By comparing two typical electrochemically doped polythiophenes with different side chain densities, it was found that side chain engineering is essential to optimize the electronic properties of the doped state. Additionally, thermoelectromotive force measurements suggest the weakly bound state of dopant molecules in doped PQT films.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Ambrose Ashwin Melvin, Bhavana Gupta, Kostiantyn Tieriekhov, Wojciech Nogala, Patrick Garrigue, Stephane Reculusa, Alexander Kuhn
Summary: An actuator controlled by light and electric field in a synergistic manner was reported, allowing for better control and a wider range of potential applications, especially in soft robotics. The actuator demonstrated reversible actuation in an aqueous solution through electrochemical reactions, leading to controlled motion based on logic gate operations. Such synergistic switching enables the development of original actuation schemes for complex mechanical tasks triggered by multiple stimuli.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Polymer Science
Karnati Narasimha, Shine K. Albert, Jongwook Kim, Hyojung Kang, Sungsu Kang, Jungwon Park, JaeHong Park, So-Jung Park
Summary: We reported the charge-transfer-driven self-assembly of conjugated block copolymers into highly doped conjugated polymer nanofibers. The presence of polyethylene oxide (PEO) block played an important role in stabilizing nanoscale charge transfer assemblies. The doped nanofibers exhibited efficient photothermal properties in response to various external stimuli.
Article
Polymer Science
Julio E. Trevino, Swati Mohan, Alexandra E. Salinas, Emilia Cueva, Karen Lozano
Summary: This study developed and characterized PVDF-conjugated polymer nanofiber-based systems, with PVDF/PPY nanofiber system exhibiting the highest piezoelectric performance. These systems show potential as an attractive source of energy for various devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
S. Zaenker, G. Scholz, T. Krahl, C. Prinz, F. Emmerling, E. Kemnitz
Summary: By doping lanthanides with different binding motifs into coordination polymers, the influence of different fluorine positions in the structure on the decay time of the excited states can be investigated. The CP with a metal-fluorine bond exhibits the highest lifetime of the excited states of lanthanides, enabling the simultaneous excitation of different lanthanides.
SOLID STATE SCIENCES
(2021)
Article
Chemistry, Analytical
Meng Li, Haoran Li, Hua Su, Wei Wang
Summary: The study combines principles of surface plasmon resonance imaging (SPRi) and a closed bipolar electrode (CBPE) to image electron transfer at a semiconductor-metal interface. By utilizing a two-cell configuration, electron transfer at the interface can be visualized and the process can be optically monitored in real time using SPR signals.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Seong Hyeon Kim, Hyunwoo Yook, Woong Sung, Jinhyeok Choi, Hyungsub Lim, Sein Chung, Jeong Woo Han, Kilwon Cho
Summary: Chemical doping can be used to tune the optoelectronic properties of conjugated polymers (CPs), but it often results in an increase in energetic disorder which hinders efficient charge transport. In this study, it is discovered that the energetic disorder in chemically doped CPs can be suppressed to a level close to the theoretical limit. By doping Indacenodithiophene-co-benzothiadiazole (IDTBT) with triethyloxonium hexachloroantimonate (OA), disorder-free charge-transport characteristics and band-like transport behavior with high carrier mobility can be achieved.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Rong Chen, Cangjie Yang, Zefeng Zhou, Fredrik Haeffner, Alinda Dersjant, Nicholas Dulock, Qi Dong, Da He, Jing Jin, Yanyan Zhao, Jia Niu, Dunwei Wang
Summary: An electrochemical method for coupling biomass-derived C5/C6 compounds to value-added fuel precursors was reported. The reaction, which is not sensitive to oxygen and can be promoted by a trace amount of water, achieves high yield in a single step. Mechanistic studies confirmed radical generation through electrochemistry as the key to the reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Shiyu Hu, Jun Gao
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Multidisciplinary
Faleh AlTal, Jun Gao
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
Shiyu Hu, Jun Gao
ADVANCED MATERIALS TECHNOLOGIES
(2018)
Article
Nanoscience & Nanotechnology
Shiyu Hu, Jun Gao
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Optics
Faleh Altal, Troy R. Allen, Stephen G. L. Nestor, Tristan G. Fleming, James M. Fraser
Article
Electrochemistry
Shiyu Hu, Jun Gao
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Multidisciplinary
Shiyu Hu, Jun Gao
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Electrochemistry
Shiyu Hu, Jun Gao
Article
Nanoscience & Nanotechnology
Kiran Birdee, Shiyu Hu, Jun Gao
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Dongze Wang, Shiyu Hu, Jun Gao
Summary: Semiconductor junctions play a crucial role in modern technology. The solid polymer light-emitting electrochemical cell (PLEC) features a homojunction that can be partially de-doped into a p-i-n structure through controlled heating/cooling cycles. The authors observed phenomena like bright reverse bias electroluminescence and hypersensitivity to temperature in the frozen polymer p-i-n junction, which can be explained by a model based on tunnel injection of charge carriers.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Shiyu Hu, Shoude Chang, Gaozhi Xiao, Jianping Lu, Jun Gao, Yanguang Zhang, Ye Tao
Summary: A new type of stretchable triboelectric nanogenerator (TENG) was reported in this study, which can effectively operate in both pressing and stretching modes due to its unique structural design. The TENG shows different output voltages, current densities, and power densities in different modes. The excellent electrical properties of the stretchable conductive composite make TENG resilient against mechanical deformation, demonstrating versatile applications in energy harvesting and sensing.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Materials Science, Multidisciplinary
Shiyu Hu, John Weber, Shoude Chang, Gaozhi Xiao, Jianping Lu, Jun Gao, Weihong Jiang, Yanguang Zhang, Ye Tao
Summary: A new sliding triboelectric nanogenerator (TENG) has been developed, which is easy to fabricate and low cost. It can directly power LEDs, sustainably power small wearable and portable electronics, and harvest energy from tensile motion associated with human activities.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Shiyu Hu, Hung-Wei Yeh, Jun Gao
Summary: Polymer light-emitting electrochemical cells (PLECs) using silver trifluoromethanesulfonate (Ag triflate) salt exhibit high luminance and efficiency, activating over 100 times faster than other optimized cells. The high performance is attributed to the partial chemical doping of the light-emitting polymer by silver cations, providing a new approach for designing high-performance mixed conductor devices.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Nanoscience & Nanotechnology
Jun Gao, Shulun Chen, Faleh AlTal, Shiyu Hu, Laurent Bouffier, Guillaume Wantz
ACS APPLIED MATERIALS & INTERFACES
(2017)