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38 results on '"Luo, Shaochuan"'

3. The Critical Role of Electron‐Donating Thiophene Groups on the Mechanical and Thermal Properties of Donor–Acceptor Semiconducting Polymers

Author

Zhang, Song, Ocheje, Michael U, Huang, Lifeng, Galuska, Luke, Cao, Zhiqiang, Luo, Shaochuan, Cheng, Yu‐Hsuan, Ehlenberg, Dakota, Goodman, Renée B, Zhou, Dongshan, Liu, Yi, Chiu, Yu‐Cheng, Azoulay, Jason D, Rondeau‐Gagné, Simon, and Gu, Xiaodan

Subjects
conjugated polymers, conjugation linkers, stretchable electronics, structure-property relationship, thermomechanical properties, Electrical and Electronic Engineering, Materials Engineering
Abstract

Organic semiconducting donor–acceptor polymers are promising candidates for stretchable electronics owing to their mechanical compliance. However, the effect of the electron-donating thiophene group on the thermomechanical properties of conjugated polymers has not been carefully studied. Here, thin-film mechanical properties are investigated for diketopyrrolopyrrole (DPP)-based conjugated polymers with varying numbers of isolated thiophene moieties and sizes of fused thiophene rings in the polymer backbone. Interestingly, it is found that these thiophene units act as an antiplasticizer, where more isolated thiophene rings or bigger fused rings result in an increased glass transition temperature (T g ) of the polymer backbone, and consequently elastic modulus of the respective DPP polymers. Detailed morphological studies suggests that all samples show similar semicrystalline morphology. This antiplasticization effect also exists in para-azaquinodimethane-based conjugated polymers, indicating that this can be a general trend for various conjugated polymer systems. Using the knowledge gained above, a new DPP-based polymer with increased alkyl side chain density through attaching alky chains to the thiophene unit is engineered. The new DPP polymer demonstrates a record low T g , and 50% lower elastic modulus than a reference polymer without side-chain decorated on the thiophene unit. This work provides a general design rule for making low-T g conjugated polymers for stretchable electronics.

Published
2019

8. Multi-scale ordering in highly stretchable polymer semiconducting films

Author

Xu, Jie, Wu, Hung-Chin, Zhu, Chenxin, Ehrlich, Anatol, Shaw, Leo, Nikolka, Mark, Wang, Sihong, Molina-Lopez, Francisco, Gu, Xiaodan, Luo, Shaochuan, Zhou, Dongshan, Kim, Yun-Hi, Wang, Ging-Ji Nathan, Gu, Kevin, Feig, Vivian Rachel, Chen, Shucheng, Kim, Yeongin, Katsumata, Toru, Zheng, Yu-Qing, Yan, He, Chung, Jong Won, Lopez, Jeffrey, Murmann, Boris, and Bao, Zhenan

Published
2019
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9. Highly stretchable polymer semiconductor films through the nanoconfinement effect

Author

Xu, Jie, Wang, Sihong, Wang, Ging-Ji Nathan, Zhu, Chenxin, Luo, Shaochuan, Jin, Lihua, Gu, Xiaodan, Chen, Shucheng, Feig, Vivian R., To, John W. F., Rondeau-Gagné, Simon, Park, Joonsuk, Schroeder, Bob C., Lu, Chien, Oh, Jin Young, Wang, Yanming, Kim, Yun-Hi, Yan, He, Sinclair, Robert, Zhou, Dongshan, Xue, Gi, Murmann, Boris, Linder, Christian, Cai, Wei, Tok, Jeffery B.-H., Chung, Jong Won, and Bao, Zhenan

Published
2017

14. Realizing Intrinsically Stretchable Semiconducting Polymer Films by Nontoxic Additives

Author

Cheng, Hao-Wen, primary, Zhang, Song, additional, Michalek, Lukas, additional, Ji, Xiaozhou, additional, Luo, Shaochuan, additional, Cooper, Christopher B., additional, Gong, Huaxin, additional, Nikzad, Shayla, additional, Chiong, Jerika A., additional, Wu, Yilei, additional, Zheng, Yu, additional, Liu, Qianhe, additional, Zhong, Donglai, additional, Lei, Yusheng, additional, Tomo, Yoko, additional, Wei, Kung-Hwa, additional, Zhou, Dongshan, additional, Tok, Jeffrey B.-H., additional, and Bao, Zhenan, additional

Published
2022
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15. FLEXIBLE ELECTRONICS: Highly stretchable polymer semiconductor films through the nanoconfinement effect

Author

Xu, Jie, Wang, Sihong, Wang, Ging-Ji Nathan, Zhu, Chenxin, Luo, Shaochuan, Jin, Lihua, Gu, Xiaodan, Chen, Shucheng, Feig, Vivian R., To, John W. F., Rondeau-Gagné, Simon, Park, Joonsuk, Schroeder, Bob C., Lu, Chien, Oh, Jin Young, Wang, Yanming, Kim, Yun-Hi, Yan, He, Sinclair, Robert, Zhou, Dongshan, Xue, Gi, Murmann, Boris, Linder, Christian, Cai, Wei, Tok, Jeffery B.-H., Chung, Jong Won, and Bao, Zhenan

Published
2017
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16. Tuning Conjugated Polymer Chain Packing for Stretchable Semiconductors

Author

Xu, Jie, primary, Wu, Hung‐Chin, additional, Mun, Jaewan, additional, Ning, Rui, additional, Wang, Weichen, additional, Wang, Ging‐Ji Nathan, additional, Nikzad, Shayla, additional, Yan, Hongping, additional, Gu, Xiaodan, additional, Luo, Shaochuan, additional, Zhou, Dongshan, additional, Tok, Jeffrey B.‐H., additional, and Bao, Zhenan, additional

Published
2021
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18. Observation of Stepwise Ultrafast Crystallization Kinetics of Donor–Acceptor Conjugated Polymers and Correlation with Field Effect Mobility

Author

Luo, Shaochuan, primary, Li, Nan, additional, Zhang, Song, additional, Zhang, Chen, additional, Qu, Tengfei, additional, Ocheje, Michael U., additional, Xue, Gi, additional, Gu, Xiaodan, additional, Rondeau-Gagné, Simon, additional, Hu, Wenbing, additional, Wang, Sihong, additional, Teng, Chao, additional, Zhou, Dongshan, additional, and Xu, Jie, additional

Published
2021
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19. Metal–Ligand Based Mechanophores Enhance Both Mechanical Robustness and Electronic Performance of Polymer Semiconductors

Author

Wu, Hung‐Chin, primary, Lissel, Franziska, additional, Wang, Ging‐Ji Nathan, additional, Koshy, David M., additional, Nikzad, Shayla, additional, Yan, Hongping, additional, Xu, Jie, additional, Luo, Shaochuan, additional, Matsuhisa, Naoji, additional, Cheng, Yuan, additional, Wang, Fan, additional, Ji, Baohua, additional, Li, Dechang, additional, Chen, Wen‐Chang, additional, Xue, Gi, additional, and Bao, Zhenan, additional

Published
2021
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21. Multiamorphous Phases in Diketopyrrolopyrrole-Based Conjugated Polymers: From Bulk to Ultrathin Films

Author

Luo, Shaochuan, primary, Wang, Tianyi, additional, Ocheje, Michael U., additional, Zhang, Song, additional, Xu, Jie, additional, Qian, Zhiyuan, additional, Gu, Xiaodan, additional, Xue, Gi, additional, Rondeau-Gagné, Simon, additional, Jiang, Jing, additional, Hu, Wenbing, additional, Zhuravlev, Evgeny, additional, and Zhou, Dongshan, additional

Published
2020
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22. Toward the Prediction and Control of Glass Transition Temperature for Donor–Acceptor Polymers

Author

Zhang, Song, primary, Alesadi, Amirhadi, additional, Selivanova, Mariia, additional, Cao, Zhiqiang, additional, Qian, Zhiyuan, additional, Luo, Shaochuan, additional, Galuska, Luke, additional, Teh, Catherine, additional, Ocheje, Michael U., additional, Mason, Gage T., additional, St. Onge, P. Blake J., additional, Zhou, Dongshan, additional, Rondeau‐Gagné, Simon, additional, Xia, Wenjie, additional, and Gu, Xiaodan, additional

Published
2020
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23. Tacky Elastomers to Enable Tear‐Resistant and Autonomous Self‐Healing Semiconductor Composites

Author

Zhang, Song, primary, Cheng, Yu‐Hsuan, additional, Galuska, Luke, additional, Roy, Anirban, additional, Lorenz, Matthias, additional, Chen, Beibei, additional, Luo, Shaochuan, additional, Li, Yen‐Ting, additional, Hung, Chih‐Chien, additional, Qian, Zhiyuan, additional, St. Onge, Peter Blake Joseph, additional, Mason, Gage T., additional, Cowen, Lewis, additional, Zhou, Dongshan, additional, Nazarenko, Sergei I., additional, Storey, Robson F., additional, Schroeder, Bob C., additional, Rondeau‐Gagné, Simon, additional, Chiu, Yu‐Cheng, additional, and Gu, Xiaodan, additional

Published
2020
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30. Ultrasmall SnO2 nanocrystals embedded in porous carbon as potassium ion battery anodes with long-term cycling performance.

Author

Luo, Shaochuan, Wang, Tianyi, Lu, Hongyan, Xu, Xiaoqian, Xue, Gi, Xu, Nan, Wang, Yong, and Zhou, Dongshan

Subjects
*POTASSIUM ions, *CARBON foams, *ANODES, *LITHIUM-ion batteries, *NANOCRYSTALS, *STANNIC oxide, *COMPOSITE materials
Abstract

Alloy-based anodes have been perceived as promising candidates for potassium ion batteries with regard to their remarkable electrochemical performance. Although tin dioxide (SnO2) has been widely studied as a high performance alloy-based anode in lithium ion batteries, there are few works on the use of SnO2 as an anode in potassium ion batteries. Here, we successfully synthesized ultrasmall SnO2 nanocrystals with a homogeneous size of 2–6 nm embedded in porous carbon using a facile hydrothermal method. The composite exhibits excellent electrochemical performance, which can be attributed to the well-defined porous carbon matrix and the well-restrained nano-scale SnO2 nanocrystals. At a low current density of 100 mA g−1, the composite material delivers a reversible capacity of 300 mA h g−1 after 100 cycles. Notably, the anode maintains a high reversible capacity of 108.3 mA h g−1 (based on the total mass of the composite) even after 10 000 cycles at a current density of 1 A g−1. [ABSTRACT FROM AUTHOR]

Published
2020
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34. Macromol. Rapid Commun. 2/2017

Author

Sha, Ye, primary, Qi, Dongliang, additional, Luo, Shaochuan, additional, Sun, Xinghua, additional, Wang, Xiaoliang, additional, Xue, Gi, additional, and Zhou, Dongshan, additional

Published
2017
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36. Synthesis of Site-Specific Dye-Labeled Polymer via Atom Transfer Radical Polymerization (ATRP) for Quantitative Characterization of the Well-Defined Interchain Distance.

Author

Sha, Ye, Qi, Dongliang, Luo, Shaochuan, Sun, Xinghua, Wang, Xiaoliang, Xue, Gi, and Zhou, Dongshan

Subjects
POLYMERIZATION, ATOM transfer reactions, FLUORESCENCE resonance energy transfer, METHYL methacrylate, BUTYL methacrylate, FLUOROPHORE synthesis
Abstract

Novel difunctional initiators that incorporate Förster/fluorescence resonance energy transfer (FRET) pairs are generated to carry out atom transfer radical polymerization of styrene, methyl methacrylate, and n-butyl methacrylate monomers by an efficient manner. Based on the chemical structures of the initiators, the locations of the fluorophore moiety are dictated to be in the center of the chain with accurately quantified chain functionality (>90% labeling ratio). The site-specific integration of FRET dyes into separate polymer chain centers allows for characterization of the well-defined interchain distance quantitatively based on the response between these fluorescent probes. The reliability of this technique is verified in bulk state, which is in well agreement with the theoretical ones. This well-defined FRET system is expected to be a promising candidate to provide a distinct physical image at a microscopic level regarding scaling chain dimension, chain interpenetration, and polymer compatibility. [ABSTRACT FROM AUTHOR]

Published
2017
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37. Ultrathin and highly breathable electronic tattoo for sensing multiple signals imperceptibly on the skin

Author

Zheng, Yan, Li, Yukun, Zhao, Yan, Lin, Xiaohu, Luo, Shaochuan, Wang, Yong, Li, Linling, Teng, Chao, Wang, Xiaoliang, Xue, Gi, and Zhou, Dongshan

Abstract

The ideal epidermal electronics is desired to be comfortable to wear (e.g., imperceptible and breathable), simple to prepare without losing functionality. But real epidermal electronics always trade off its functionality, comfortability, and fabrication complexity. Herein, we present an ultrathin, breathable (20.5mg/cm2h), multifunctional electronic tattoo (e-tattoo) that can be manufactured efficiently and cheaply. Ultrathin (0.15 μm~11.09 μm) and porous thermoplastic polyurethane (TPU) film, obtained by combining simple rod-coating and polymer solution phase separation, provide excellent breathability for the devices. Silver nanowires (AgNWs) are sprayed on the porous film surface to form a strain-insensitive conductive layer. Based on porous films, a series of functional modules such as electrophysiological sensing, epidermal moisture sensing, touch sensing (with self-signal recognition), and pressure sensing (no interference with skin sensation) are described in the work. Experiments have shown that ultrathin and breathable e-tattoos have good conformability and can work imperceptibly on the skin for a long time. This e-tattoo with excellent comprehensive performance provides new ideas in health monitoring, human-computer interaction, and tactile information detection, and contributes to the development of next-generation epidermal electronic platforms.

Published
2022
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38. In situ continuous hydrogen-bonded engineering for intrinsically stretchable and healable high-mobility polymer semiconductors.

Author

Yue H, Wang Y, Luo S, Guo J, Jin J, Li G, Meng Z, Zhang L, Zhou D, Zhen Y, and Hu W

Abstract

As a key component for wearable electronics, intrinsically stretchable and healable semiconducting polymers are scarce because carrier mobility is often reduced with increasing stretchability and self-healability. Here, we combine stepwise polymerization and thermal conversion to introduce in situ continuous hydrogen bonding sites in a polymer backbone without breaking the conjugation or introducing bulky softer side chains, benefiting the intrachain and interchain charge transport. We demonstrate that a regular sequence structure facilitated the formation of big nanofibers with a high degree of aggregation, providing the loose and porous thin film with simultaneously improved charge transport, stretchability, and self-healability. The mobility of damaged devices can be recovered to 81% after a healing treatment. Fully stretchable transistor based on the designed polymer exhibited a greatly enhanced mobility up to 1.08 square centimeters per volt per second under 100% strain, which is an unprecedented value and constitutes a major step for the development of intrinsically stretchable and healable semiconducting polymers.

Published
2024
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