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Du B, Yi J, Yan H, Wang T. Temperature Induced Aggregation of Organic Semiconductors. Chemistry 2020; 27:2908-2919. [DOI: 10.1002/chem.202002559] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Baocai Du
- School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China
| | - Jicheng Yi
- Department of Chemistry and Energy Institute The Hong Kong University of Science and Technology Clear Water Bay Hong Kong
| | - He Yan
- Department of Chemistry and Energy Institute The Hong Kong University of Science and Technology Clear Water Bay Hong Kong
| | - Tao Wang
- School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China
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Jang HK, Oh JY, Jeong GJ, Lee TJ, Im GB, Lee JR, Yoon JK, Kim DI, Kim BS, Bhang SH, Lee TI. A Disposable Photovoltaic Patch Controlling Cellular Microenvironment for Wound Healing. Int J Mol Sci 2018; 19:E3025. [PMID: 30287745 PMCID: PMC6213857 DOI: 10.3390/ijms19103025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 01/10/2023] Open
Abstract
Electrical stimulation (ES) is known to affect the wound healing process by modulating skin cell behaviors. However, the conventional clinical devices that can generate ES for promoting wound healing require patient hospitalization due to large-scale of the extracorporeal devices. Herein, we introduce a disposable photovoltaic patch that can be applied to skin wound sites to control cellular microenvironment for promoting wound healing by generating ES. In vitro experiment results show that exogenous ES could enhance cell migration, proliferation, expression of extracellular matrix proteins, and myoblast differentiation of fibroblasts which are critical for wound healing. Our disposable photovoltaic patches were attached to the back of skin wound induced mice. Our patch successfully provided ES, generated by photovoltaic energy harvested from the organic solar cell under visible light illumination. In vivo experiment results show that the patch promoted cutaneous wound healing via enhanced host-inductive cell proliferation, cytokine secretion, and protein synthesis which is critical for wound healing process. Unlike the current treatments for wound healing that engage passive healing processes and often are unsuccessful, our wearable photovoltaic patch can stimulate regenerative activities of endogenous cells and actively contribute to the wound healing processes.
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Affiliation(s)
- Hyeon-Ki Jang
- Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Korea.
| | - Jin Young Oh
- Department of Chemical Engineering, Kyung Hee University, Yongin 17104, Korea.
| | - Gun-Jae Jeong
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Tae-Jin Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Gwang-Bum Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Dong-Ik Kim
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Korea.
- Bio-MAX Institute, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea.
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Tae Il Lee
- Department of BioNano Technology, Gachon University, Seongnam 13120, Korea.
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Lee Y, Shin M, Thiyagarajan K, Jeong U. Approaches to Stretchable Polymer Active Channels for Deformable Transistors. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02268] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yujeong Lee
- Department of Materials
Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, Korea 120-749
| | - Minkwan Shin
- Department of Materials
Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, Korea 120-749
| | - Kaliannan Thiyagarajan
- Department of Materials
Science and Engineering, Pohang University of Science and Technology (POSTECH),
77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, Korea 790-784
| | - Unyong Jeong
- Department of Materials
Science and Engineering, Pohang University of Science and Technology (POSTECH),
77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, Korea 790-784
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Panzer F, Bässler H, Lohwasser R, Thelakkat M, Köhler A. The Impact of Polydispersity and Molecular Weight on the Order-Disorder Transition in Poly(3-hexylthiophene). J Phys Chem Lett 2014; 5:2742-2747. [PMID: 26277973 DOI: 10.1021/jz5009938] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Conjugated poly(3-hexylthiophene) (P3HT) chains are known to exist at least in two distinct conformations: a coiled phase and a better ordered aggregated phase. Employing steady state absorption and fluorescence spectroscopy, we measure the course of aggregation of P3HT in tetrahydrofuran (THF) solution within a temperature range of 300 K to 170 K. We show that aggregation is a temperature controlled process, driven by a thermodynamic order-disorder transition. The transition temperature increases with the molecular weight of the chains and can be rationalized in the theory of Sanchez. This implies a smearing out of the phase transition in samples with increasing polydispersity and erodes the signature of a first order phase transition. The detection of a hysteresis when undergoing cooling/heating cycles further substantiates this reasoning.
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Affiliation(s)
- Fabian Panzer
- †Experimental Physics II, ‡Bayreuth Institute of Macromolecular Science, and §Applied Functional Polymers, Macromolecular Chemistry 1, University of Bayreuth, 95540 Bayreuth, Germany
| | - Heinz Bässler
- †Experimental Physics II, ‡Bayreuth Institute of Macromolecular Science, and §Applied Functional Polymers, Macromolecular Chemistry 1, University of Bayreuth, 95540 Bayreuth, Germany
| | - Ruth Lohwasser
- †Experimental Physics II, ‡Bayreuth Institute of Macromolecular Science, and §Applied Functional Polymers, Macromolecular Chemistry 1, University of Bayreuth, 95540 Bayreuth, Germany
| | - Mukundan Thelakkat
- †Experimental Physics II, ‡Bayreuth Institute of Macromolecular Science, and §Applied Functional Polymers, Macromolecular Chemistry 1, University of Bayreuth, 95540 Bayreuth, Germany
| | - Anna Köhler
- †Experimental Physics II, ‡Bayreuth Institute of Macromolecular Science, and §Applied Functional Polymers, Macromolecular Chemistry 1, University of Bayreuth, 95540 Bayreuth, Germany
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Oh JY, Shin M, Lee JB, Ahn JH, Baik HK, Jeong U. Effect of PEDOT Nanofibril Networks on the Conductivity, Flexibility, and Coatability of PEDOT:PSS Films. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6954-6961. [PMID: 24713072 DOI: 10.1021/am500769k] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The use of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in electrodes and electrical circuits presents a number of challenges that are yet to be overcome, foremost amongst which are its relatively low conductivity, low coatability on hydrophobic substrates, and decreased conductivity at large strains. With this in mind, this study suggests a simple way to simultaneously address all of these issues through the addition of a small amount of a nonionic surfactant (Triton X-100) to commercial PEDOT:PSS solutions. This surfactant is shown to considerably reduce the surface tension of the PEDOT:PSS solution, thus permitting conformal coatings of PEDOT:PSS thin film on a diverse range of hydrophobic substrates. Furthermore, this surfactant induces the formation of PEDOT nanofibrils during coating, which led to the high conductivity values and mechanical stability at large strains (ε=10.3%). Taking advantage of the superior characteristics of these PEDOT:PSS thin films, a highly flexible polymer solar cell was fabricated. The power conversion efficiency of this solar cell (3.14% at zero strain) was preserved at large strains (ε=7.0%).
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Affiliation(s)
- Jin Young Oh
- Department of Materials Science and Engineering and ‡Department of Electrical and Electronic Engineering, Yonsei University , 134 Shinchon-dong, Seoul, Korea
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Oh JY, Shin M, Lee TI, Jang WS, Lee YJ, Kim CS, Kang JW, Myoung JM, Baik HK, Jeong U. Highly Bendable Large-Area Printed Bulk Heterojunction Film Prepared by the Self-Seeded Growth of Poly(3-hexylthiophene) Nanofibrils. Macromolecules 2013. [DOI: 10.1021/ma4003165] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Young Oh
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Minkwan Shin
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Tae Il Lee
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Woo Soon Jang
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Yu-Jeong Lee
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Chang Su Kim
- Advanced Functional Thin Films
Department, Korea Institute of Materials Science, Changwon 641-831, Republic of Korea
| | - Jae-Wook Kang
- Department of Flexible and Printable
Electronics, Chonbuk National University, Jeonju 561-756, Republic
of Korea
| | - Jae-Min Myoung
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Hong Koo Baik
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
| | - Unyong Jeong
- Department of Materials Science
and Engineering, Yonsei University, 134
Shinchong-dong, Seoul 120-750, Republic Korea
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Sun Y, Liu J, Ding Y, Han Y. Decreasing the aggregation of PCBM in P3HT/PCBM blend films by cooling the solution. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.12.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Keum JK, Xiao K, Ivanov IN, Hong K, Browning JF, Smith GS, Shao M, Littrell KC, Rondinone AJ, Andrew Payzant E, Chen J, Hensley DK. Solvent quality-induced nucleation and growth of parallelepiped nanorods in dilute poly(3-hexylthiophene) (P3HT) solution and the impact on the crystalline morphology of solution-cast thin film. CrystEngComm 2013. [DOI: 10.1039/c2ce26666k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Oh JY, Shin M, Lee TI, Jang WS, Min Y, Myoung JM, Baik HK, Jeong U. Self-Seeded Growth of Poly(3-hexylthiophene) (P3HT) Nanofibrils by a Cycle of Cooling and Heating in Solutions. Macromolecules 2012. [DOI: 10.1021/ma300958n] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jin Young Oh
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Minkwan Shin
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Tae Il Lee
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Woo Soon Jang
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Yuho Min
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Jae-Min Myoung
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Hong Koo Baik
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Republic
of Korea
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