Article
Polymer Science
Lingli Zhao, Yanyan Cao, Hanwen Qin, Xi He, Zhiyuan Zhao, Yunlong Guo, Huajie Chen
Summary: We report the synthesis and characterization of a core-extended acceptor building block, 2,7-dibromobenzo[2,1-b:3,4-b ']dithiophene diimides (abbreviated as 2Br-NTI), which achieves high electron affinity and tunable solubility. By embedding the acceptor and electron-rich species into polymer backbones, the resulting conjugated copolymers exhibit near-linearly pi-extended conjugation and intriguing photophysical/electrochemical properties.
Article
Polymer Science
Mei-Tung Lau, Zikang Li, Zelin Sun, Wai-Yeung Wong
Summary: In the last decade, there has been a growing interest in the study of conjugated organic polymers for thermoelectric application. This study focuses on non-conjugated radical polymers (NCRPs) and their potential use in electronic technology. Three metal-containing NCRPs were synthesized and coated with single-walled carbon nanotubes (SWCNTs) to form various polymer composites. The results showed that NCRPs could be a promising material for thermoelectric applications.
Article
Polymer Science
Alvin Tanudjaja, Makoto Higuchi, Tomohiro Imai, Yoshimasa Matsumura, Ryoyu Hifumi, Shinsuke Inagi, Ikuyoshi Tomita
Summary: pi-Conjugated poly(arylene ethynylene)s containing both thiophene-2,5-diyl and fused metallacycles were synthesized and studied for their optoelectronic features. The polymers showed solubility in organic solvents, narrow optical band gaps, and bathochromic shift in the absorption spectra.
Article
Polymer Science
C. Elizabeth O'Connell, Sina Sabury, J. Elias Jenkins, Graham S. Collier, Bobby G. Sumpter, Brian K. Long, S. Michael Kilbey
Summary: This study demonstrates the synthesis of a series of fully pi-conjugated copolymers using direct arylation polymerization, with the purine scaffold as a key design element. The photophysical properties of the resulting copolymers can be widely varied by choosing different comonomers and manipulating the electronic nature of the purine scaffold.
Article
Polymer Science
Dhananjaya Patra, Marc Comi, Xianhe Zhang, Gururaj P. Kini, Malsha Udayakantha, Alexander J. Kalin, Sarbajit Banerjee, Lei Fang, Xugang Guo, Mohammed Al-Hashimi
Summary: The study focuses on the structural characteristics of polymers based on thiazole units and their impact on charge carrier mobility. The synthesis of four different heterocycle-based monomers and their copolymerization with electron-rich alkylated thienylenevinylene units resulted in copolymers with the best charge mobility.
Article
Spectroscopy
Dineshkumar Sengottuvelu, Muthusamy Athianna, Anand Siddeswaran
Summary: A series of azomethine diol monomers containing naphthalene moiety were oxidatively polymerized in aqueous alkaline medium using NaOCl as oxidant. The polymers exhibit high thermal stability and good spectroscopic properties.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Ana Sanchez-Grande, Jose I. Urgel, Ines Garcia-Benito, Jose Santos, Kalyan Biswas, Koen Lauwaet, Jose M. Gallego, Johanna Rosen, Rodolfo Miranda, Jonas Bjork, Nazario Martin, David Ecija
Summary: On-surface synthesis is a powerful strategy for designing conjugated polymers previously unachievable with conventional solution chemistry. In this study, a precursor containing N is synthesized and used for homocoupling reactions on metallic supports. The choice of substrate determines the reaction mechanism, with Ag(111) leading to the formation of a N-containing coordination polymer followed by ladderization, while Au(111) directly forms the ladder polymer. The results highlight the selective role of the metallic support in the synthesis of N-containing conjugated polymers.
Article
Chemistry, Multidisciplinary
Leo B. Zasada, Lorenzo Guio, Austin A. Kamin, Diwash Dhakal, Madison Monahan, Gerald T. Seidler, Christine K. Luscombe, Dianne J. Xiao
Summary: We report the synthesis of copper-based macrocycles resembling truncated fragments of a two-dimensional metal-organic framework. These macrocycles self-assemble into ordered nanotubes and exhibit high conductivities and ambipolar charge transport. By enhancing solution processability, these macrocycles enable device integration and provide deeper insights into out-of-plane charge transport in two-dimensional metal-organic frameworks.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Polymer Science
Youngmin Lee, Alfred Mongare, Aaron Plant, Donghyeon Ryu
Summary: MO behavior can monitor mechanical deformation, with changes in optoelectronic properties of polymer films under deformation. Research on MO systems focuses on the extent of changes in optoelectronic properties under mechanical deformation.
Article
Chemistry, Multidisciplinary
Shiyan Chen, Lingwei Feng, Lixia Peng, Xiang Gao, Yongfa Zhu, Liulin Yang, Dafa Chen, Kai Zhang, Xugang Guo, Fei Huang, Haiping Xia
Summary: In this study, a strong acceptor building block with a di-metallaaromatic structure was designed and synthesized, and then inserted into conjugated polymer scaffolds through a double-monomer polymerization methodology to yield metallopolymers. Kinetic studies using nuclear magnetic resonance and ultraviolet-visible spectroscopies provided insights into the polymerization process. The resulting metallopolymers with d(& pi;)-p(& pi;) conjugations showed promising electron transport properties and significantly enhanced photovoltaic performance in an organic solar cell.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Ying Sui, Xuwen Zhang, Chenhui Xu, Yibo Shi, Yunfeng Deng, Yang Han, Yanhou Geng
Summary: In this study, three CH monomers, Ph-2FTh, 2FPh-2FTh, and BTz-2FTh, with 3,4-difluorothiophene as terminal units and phenyl, 2,5-difluorophenyl and benzothiadiazole as central units, were synthesized for the direct arylation polycondensation to diketopyrrolopyrrole- and isoindigo-based high-mobility conjugated polymers. The resulting polymers showed n-channel behavior in organic thin-film transistors, with electron mobility up to 0.54 cm2 V-1 s-1. Overall, the study obtained significant findings in the synthesis and characterization of conjugated polymers. Evaluation: 8 points.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Man Xu, Chuanxin Wei, Yunlong Zhang, Jiefeng Chen, Hao Li, Jingrui Zhang, Lili Sun, Bin Liu, Jinyi Lin, Mengna Yu, Linghai Xie, Wei Huang
Summary: This article summarizes the importance and recent developments of the coplanar conformational structure of conjugated polymers for optoelectronic devices. It comprehensively reviews the unique properties of this conformation and emphasizes its optoelectrical properties. It also provides characterization methods and guidelines for inducing this conformation, as well as a summary of its optoelectronic applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Yangyang Wan, Fernando Ramirez, Xu Zhang, Thuc-Quyen Nguyen, Guillermo C. Bazan, Gang Lu
Summary: This study utilized machine learning and high-throughput calculations to predict the properties of CPEs and identified key structural features crucial to their properties, which could accelerate the application of CPEs in optoelectronics and photocatalysis.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Polymer Science
Qi Chen, Chuxin Luo, Qi Ma, Xueyang Yan, Xuediao Cai
Summary: Hyperbranched conjugated polymers containing different aryl groups appended with carboxylic ester groups were synthesized by metal-free catalyzed polymerization and showed good solubility in organic solvents and thermal stability. They were investigated as fluorescence chemosensors for Fe3+ ion detection, with the water-soluble polymers also demonstrating capability in aqueous solutions. These polymers were highly sensitive and selective towards Fe3+ ions in both organic solvents and water, suggesting their potential as real-time fluorescence chemosensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Organic
Shunsuke Tamba, Masashi Nitani, Takuji Seo, Hajime Nitta, Hikaru Tanaka, Kazutake Hagiya, Yoshio Aso, Yutaka Ie
Summary: Incorporating an electron-accepting unit into pi conjugated systems is an important approach to modulate the physical properties of such molecules. In this study, a series of diarylated tetrazolo[1,5-a]pyridine derivatives were synthesized to investigate the potential of tetrazolo[1,5-a]pyridine as an electron-accepting unit. The bithiophene-substituted tetrazolo[1,5-a]pyridine compound exhibited stable transistor characteristics under repeated bias conditions.
Article
Chemistry, Physical
Murali Gedda, Despoina Gkeka, Mohamad Insan Nugraha, Alberto D. Scaccabarozzi, Emre Yengel, Jafar Khan, Lain Hamilton, Yuanbao Lin, Marielle Deconinck, Yana Vaynzof, Frederic Laquai, Donal D. C. Bradley, Thomas D. Anthopoulos
Summary: This study reports highly efficient green PeLEDs based on blends of low-dimensional hybrid perovskite and organic semiconductor, which achieve greatly enhanced performance characteristics through the use of self-assembled monolayers as hole-injecting layers.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Suman Mandal, Yanbei Hou, Mingqing Wang, Thomas D. Anthopoulos, Kwang Leong Choy
Summary: This study systematically investigated the effect of surface functionalization on TiO2 and BaTiO3 nanoparticles (NPs) to improve the dielectric permittivity of polyvinylidene fluoride (PVDF) nanocomposites (NCs). The dielectric permittivity of TiO2 and BaTiO3 NPs increased by 23% and 74% respectively, at a frequency of 1 kHz. A new hetero-phase filler-based approach was developed to further enhance the dielectric permittivity of PVDF/NPs-based NCs. A dielectric constant of 50.2, comparable to BaTiO3-based NCs, was achieved using a 1:3 mixing ratio of TiO2:BaTiO3 NPs. The highest dielectric constant of 76.1 at 1 kHz was obtained with a (3-aminopropyl)triethoxysilane (APTES)-modified hetero-phase-based PVDF composite at a volume concentration of 5%. This work is an important step towards inexpensive and easy-to-process high-k nanocomposite dielectrics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Filip Anies, Mohamad I. Nugraha, Arona Fall, Julianna Panidi, Yuxi Zhao, Patrice Vanelle, Leonidas Tsetseris, Julie Broggi, Thomas D. Anthopoulos, Martin Heeney
Summary: Molecular doping using air-stable carboxylated dopant precursors has been developed to enhance the electronic properties of organic semiconductors (OSCs). The dopants can be easily generated in solution and applied to n-type organic field-effect transistors (OFETs). Experimental and computational studies reveal the decarboxylation and dimerization processes involved in the formation of active dopants. The successful improvement of device performance demonstrates the versatility of the dopants across different OSCs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qiao He, Aniruddha Basu, Hyojung Cha, Matyas Daboczi, Julianna Panidi, Luxi Tan, Xiantao Hu, Chi Cheng Huang, Bowen Ding, Andrew J. P. White, Ji-Seon Kim, James R. Durrant, Thomas D. Anthopoulos, Martin Heeney
Summary: A new class of J-aggregating materials based on quinoidal indacenodithiophenes (IDTs) with ultra-narrowband NIR absorption peak is reported. The spectral width can be tuned by the length of the solubilizing alkyl group. The J-aggregate behavior is confirmed and their utility as electron-transporting materials is demonstrated.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Xiantao Hu, Aniruddha Basu, Martina Rimmele, Adam V. V. Marsh, Filip Anies, Qiao He, Thomas D. D. Anthopoulos, Martin Heeney
Summary: We report the synthesis and characterization of four novel n-type polymer semiconductors containing a 2-(1,3-dithiol-2-ylidene)malonitrile (DTYM) group as an acceptor and a 2,1,3-benzothiadiazole (BT) unit. The introduction of the DTYM group leads to backbone twisting and blue-shifted absorption, but increases the dipole moment and electron affinity. All polymers exhibit n-type semiconducting character in organic field-effect transistors (OFETs), with the fluorinated bithiophene donor demonstrating the best performance. This work highlights the influence of the DTYM group on polymer semiconductors and its potential as a functional group to enhance electron affinity.
Review
Chemistry, Multidisciplinary
Mohamad Insan Nugraha, Indriyati Indriyati, Indah Primadona, Murali Gedda, Gerald Ensang Timuda, Ferry Iskandar, Thomas D. D. Anthopoulos
Summary: Semiconducting colloidal quantum dots (CQDs) are a promising class of thermoelectric materials for future applications. They offer solution processability and scalable manufacturing potential. With their unique low dimensionality, CQDs can be utilized to tune the Seebeck coefficient and thermal conductivity independently, making them suitable for use in thin-film thermoelectric generators (TEGs) operating near room temperature.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Andrew Strang, Victoria Quiros-Cordero, Pascal Gregoire, Sara Pla, Fernando Fernandez-Lazaro, Angela Sastre-Santos, Carlos Silva-Acuna, Paul N. Stavrinou, Natalie Stingelin
Summary: This paper presents planar microcavities that are fully processed from solution, consisting of polymer-based distributed Bragg reflectors (DBRs) and a perylene diimide derivative (b-PDI-1) film. Strong light-matter coupling is achieved in these structures, as demonstrated by the energy-dispersion relation in reflectance and the group delay of transmitted light. The controllable production of the entire microcavity stack and the ability to precisely manipulate the refractive index of the inorganic/organic hybrid layers make it possible to design and produce microcavities with a wide spectral range of optical modes.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Elisabeth A. Duijnstee, Benjamin M. Gallant, Philippe Holzhey, Dominik J. Kubicki, Silvia Collavini, Bernd K. Sturdza, Harry C. Sansom, Joel Smith, Matthias J. Gutmann, Santanu Saha, Murali Gedda, Mohamad I. Nugraha, Manuel Kober-Czerny, Chelsea Xia, Adam D. Wright, Yen-Hung Lin, Alexandra J. Ramadan, Andrew Matzen, Esther Y. -H. Hung, Seongrok Seo, Suer Zhou, Jongchul Lim, Thomas D. Anthopoulos, Marina R. Filip, Michael B. Johnston, Robin J. Nicholas, Juan Luis Delgado, Henry J. Snaith
Summary: By adding MDACl2 to FAPbI3, the ambient-phase stability of FAPbI3 can be enhanced and world-record photovoltaic efficiencies can be achieved. However, it is actually the rapid degradation of MDACl2 to HMTA in the solution that is responsible for the improved material stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Biophysics
Abhinav Sharma, Wejdan S. AlGhamdi, Hendrik Faber, Yen-Hung Lin, Chien-Hao Liu, En-Kai Hsu, Wei-Zhi Lin, Dipti Naphade, Suman Mandal, Martin Heeney, Thomas D. Anthopoulos
Summary: In this study, tri-channel In2O3/ZnO heterojunction thin-film transistors (TFTs) were developed to detect glucose in various biofluids. By immobilizing the enzyme glucose oxidase on the surface, the TFTs can selectively detect glucose through the strong coupling between the electrons transported along the buried In2O3/ZnO heterointerface and the electrostatic perturbations caused by the interactions between glucose and glucose oxidase. The BioTFTs demonstrated high sensitivity and specificity for glucose detection in both artificial and real saliva.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Polymer Science
Qiao He, Jessica Shaw, Yuliar Firdaus, Xiantao Hu, Bowen Ding, Adam V. Marsh, Alexandre S. Dumon, Yang Han, Zhuping Fei, Thomas D. Anthopoulos, Christopher R. McNeill, Martin Heeney
Summary: In this work, a new synthesis method for a key building block of the ring-expanded electron-deficient pentacyclic azepinedione (BTTA) was reported. Three copolymers of BTAA with different side chains were prepared and their performance in transistor and photovoltaic devices were studied. The best-performing polymers in transistor devices exhibited maximum saturation hole mobilities of 0.027 and 0.017 cm(2) V-1 s(-1), and the best photovoltaic efficiency achieved was 6.78% for pBDT-BTTA-3-based devices. The use of a low band gap non-fullerene acceptor (BTP-eC9) resulted in improved efficiency of up to 13.5%. These results demonstrate the versatile applications of the electron-deficient BTTA unit in organic electronics.
Article
Materials Science, Multidisciplinary
Xiantao Hu, Zhuoran Qiao, Davide Nodari, Qiao He, Jesika Asatryan, Martina Rimmele, Zhili Chen, Jaime Martin, Nicola Gasparini, Martin Heeney
Summary: Two fully non-fused small-molecule acceptors (BTIC-1 and BTIC-2) were studied for near-infrared organic photodetectors (NIR OPDs). BTIC-2 exhibited a smaller optical band gap and a wider absorption range compared to BTIC-1, resulting in superior OPD performance. Varying conformational locks can enhance the device performance of NIR OPDs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Aditi Khirbat, Oded Nahor, Henry Kantrow, Oladipo Bakare, Artem Levitsky, Gitti L. L. Frey, Natalie Stingelin
Summary: Blending allows for the combination of multiple properties in a material system and the creation of new features. However, blending polymers can be challenging due to their low tendency to mix. In this study, we successfully induced a wide range of phase morphologies in blends of the polymer semiconductor P3HT and PVDF, despite their limited miscibility. By manipulating the chain entanglements, we were able to establish a reliable relationship between structure, phase morphology, and properties for materials discovery.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Natalia Pereira Menezes, Tommaso Nicolini, Micah Barker, Andre Augusto Mariano, Cesar Augusto Dartora, Guillaume Wantz, Natalie Stingelin, Mamatimin Abbas, Olivier J. Dautel, Damien Thuau
Summary: Organic electrochemical transistors (OECTs) can track biological events with high sensitivity, but stable long-term electrochemical characteristics are needed for practical biosensing applications. This study demonstrates the stability of OECTs using a low swelling mixed conductor, poly[3-(6-hydroxy)hexylthiophene] (P3HHT), soaked in an electrolyte for up to 40 days, and investigates the influence of electrolyte nature on device performance.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Brandon T. DiTullio, Xiao Kuang, Anna M. Osterholm, Augustus W. Lang, Patrick J. Kinlen, Natalie Stingelin, H. Jerry Qi, John R. Reynolds
Summary: Printable feedstocks with tunable and switchable conductivity are of interest for various applications. Combining commodity thermoplastics with conducting polymers presents new opportunities for printed electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
