Article
Materials Science, Multidisciplinary
Sheng Li, Rosemary Cranston, Benoit H. Lessard, Dwight S. Seferos
Summary: The study focuses on the self-assembly behavior of conjugated polymers at different degrees of polymerization, with statistical copolymer gels showing higher conductivity after cycle-doping and maintaining high conductivity even after seven doping cycles. Grazing incident wide-angle X-ray scattering suggests an inter-charge transfer doping mechanism between the polymer and dopant.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Dukhan Kim, Emily A. Mueller, Da Seul Yang, Danielle E. Fagnani, Jinsang Kim, Anne J. McNeil
Summary: This study demonstrates that a single copolymer containing a conjugated poly(3-hexylthiophene) backbone and fullerene-functionalized side chains can serve as a general blend stabilizer, suppressing phase separation in multiple conjugated polymer/fullerene thin film blends as well as in a photovoltaic device.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Tomoyuki Kurioka, Takahiro Komamura, Naoki Shida, Teruaki Hayakawa, Ikuyoshi Tomita, Shinsuke Inagi
Summary: The ordered structure of poly(3-(2-ethylhexyl)thiophene) (P3EHT) films can be controlled by changing the solvent used to prepare them. The successful electrochemical post-functionalization (ePF) of P3EHT films is attributed to their greater electrochemical conductivity compared to amorphous P3EHT films.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Qingqing Zhao, Dingke Li, Juan Peng
Summary: This study reports two distinct polymorphisms in PBTTT thin films for the first time and elucidates the impact of different alkyl side chains and molecular weights on polymorphism, as well as the transformation process between them via thermal and solvent vapor annealing. The research also reveals the sensitivity of charge transport properties of PBTTT thin films to their crystalline structures, including polymorphism changes.
Review
Chemistry, Multidisciplinary
Shuyang Ye, Victor Lotocki, Hao Xu, Dwight S. Seferos
Summary: This review discusses the synthesis and properties of five-membered aromatic rings containing Group 16 elements in pi-conjugated polymers, and their impact on device performance. Effective methods of post-polymerization modifications are highlighted as well.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Polymer Science
Manami Kawakami, Karl H. G. Schulz, Anthony J. Varni, Claudio F. Tormena, Roberto R. Gil, Kevin J. T. Noonan
Summary: This study demonstrates the feasibility of homopolymerization and statistical copolymerization of 2-ethylhexyl thiophene-3-carboxylate and 2-ethylhexyl selenophene-3-carboxylate monomers via Suzuki-Miyaura cross-coupling. The use of a specific palladium catalyst allows for the preparation of regioregular conjugated polymers with high molecular weights and relatively narrow molecular weight distributions. Increasing the concentration of selenophene-3-carboxylate in the copolymer series can reduce the optical bandgap.
Article
Materials Science, Multidisciplinary
Na Young Kim, Taek Seong Lee, Da Yeon Lee, Jong Gyu Oh, Keunjin Lee, Jae Young Kim, Tae Kyu An, Yong Jin Jeong, Jaeyoung Jang, Yun-Hi Kim
Summary: The new DPP-based conjugated polymer EHT6-20DPP with eight thiophene groups per repeat unit showed higher doping efficiency and better thermoelectric performance compared to other DPP-based polymers, providing insights into optimal polymer backbone design for excellent thermoelectric properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Sung Yun Son, Taiho Park, Wei You
Summary: The orientation of crystallites in semicrystalline conjugated polymer thin films significantly impacts charge transport properties. In this study, a random copolymer RP-3T demonstrated a transition from predominantly face-on to edge-on orientation during annealing. Through detailed analysis, it was found that face-on crystallites disappear at a lower temperature while edge-on crystallites continue to grow, providing insight into the transition process.
CHEMISTRY OF MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Lin Cui, Jinghua Zhou, Chen-chen Li, Shengyuan Deng, Wenqiang Gao, Xiaomei Zhang, Xiliang Luo, Xiaolei Wang, Chun-yang Zhang
Summary: The study successfully induced strong dual-band bipolar electrochemiluminescence with ThT-CMP and TPBE, emitting at 554 nm (anodic) and 559 nm (cathodic). A dipolar ECL sensor based on resonance energy transfer was further developed to sensitively detect RhB, displaying a large dynamic range and high sensitivity. This research opens up possibilities for designing organic structures with bipolar AIECL characteristics for luminescent device development.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Gulsen Turkoglu, Turan Ozturk
Summary: Two novel selenophenothiophene homopolymers, P(SeT1) and P(SeT2), were electrochemically prepared for the first time from their corresponding monomers to explore their electrochromic behaviors. The cross-conjugated polymer P(SeT2) exhibited a color change from yellow to light green upon oxidation, while the conjugated polymer P(SeT1) showed an orange color in the neutral state and a claret red color when oxidized. P(SeT1) had a lower optical band gap and P(SeT2) displayed higher optical contrast and faster response time, indicating their potential for use in organic electrochromic materials.
Article
Materials Science, Multidisciplinary
Shin Inagaki, Yan-Cheng Lin, Hisakazu Tanaka, Tomoyuki Koganezawa, Wen-Chang Chen, Tomoya Higashihara
Summary: A novel A-b-(B-co-C)-type terpolymer was synthesized to address the issue of irreversible damage caused by stretching in organic semiconductors for wearable electronic devices. The terpolymer showed high stretchability, stable device performance, and stable bipolar charge trapping.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Xiaomei Ding, Duyen K. Tran, Daiki Kuzuhara, Tomoyuki Koganezawa, Samson A. Jenekhe
Summary: The study demonstrates that the substitution of selenophene for thiophene in donor-acceptor copolymers enhances the intrinsic polymer properties and the performance of all-polymer solar cells incorporating them.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Tobias Reiker, Zitong Liu, Carsten Winter, Nils Fabian Kleimeier, Deqing Zhang, Helmut Zacharias
Summary: Conjugated polymers based on DPP, combined with different donors, were studied for electronically excited state lifetimes and charge transport properties using time-resolved spectroscopy. After annealing, the ultrafast decay of electrons extended, possibly connected with improved charge transport in the film.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Analia 'Orazio-Colman, Dong Hwan Son, Rahmatia Fitri Binti Nasrun, Joo Hyun Kim
Summary: A series of polymers based on indandione derivatives were synthesized and used as donor materials for PSCs. The best power conversion efficiency was achieved using TIND-DHT-BDTF as the donor in the inverted-type PSCs.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Electrical & Electronic
Tao Xu, Huiping Liu, Rongjun Zhao, Linjie Yuan, Zewei Zhu, Xi Chen, Haoqin Hou, Xinwen Peng
Summary: Polymer film capacitors cannot meet the increasing demand for high-temperature (> 125 degrees C) applications in the rapid development of new energy. In order to develop high-temperature-resistant polymer dielectrics, a novel polyimide containing porphyrin units (PI-a) was prepared. High-performance polyimide dielectrics were developed by mixing PI-a and PI-b, resulting in a polyimide blend with excellent properties and high energy storage density. These polyimide blends can extend the applications of film capacitors at high temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)