Article
Chemistry, Multidisciplinary
Alessandro Silvestri, Alejandro Criado, Fabrizio Poletti, Faxing Wang, Pablo Fanjul-Bolado, Maria B. Gonzalez-Garcia, Clara Garcia-Astrain, Luis M. Liz-Marzan, Xinliang Feng, Chiara Zanardi, Maurizio Prato
Summary: With the advancement of flexible electronics, conductive inks combined with low-cost printing techniques are replacing traditional solid-state technology. Graphene, with its excellent conductivity and zero bandgap, is an ideal candidate for producing such inks. Chemically modifying graphene with active molecules opens up possibilities in the field of responsive conductive inks.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Irena Ivanisevic, Marin Kovacic, Marko Zubak, Antonia Ressler, Sara Krivacic, Zvonimir Katancic, Iva Gudan Pavlovic, Petar Kassal
Summary: This work demonstrates the development of a silver nanoparticle-based functional ink for printing on flexible paper and plastic substrates. By improving the wetting properties of the silver nanoparticles, stable printing on different surfaces was achieved, followed by sintering using intense pulsed light. The silver nanoparticle ink shows great potential in the field of flexible electronics.
Article
Chemistry, Physical
Shouli Ming, Yuling Zhang, Kaiwen Lin, Jinsheng Zhao, Yan Zhang
Summary: This study synthesized three low-bandgap donor-acceptor polymers based on large fused-ring conjugated polymers and demonstrated their diverse color changes and excellent electrochromic properties in visible and near-infrared electrochromic devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jolie C. Blake, Stefano Rossi, Magnus P. Jonsson, Andreas Dahlin
Summary: This paper demonstrates an efficient and scalable strategy to fabricate silver-based reflective metal-insulator-nanodisk plasmonic cavities that provide a cyan-magenta-yellow (CMY) color palette with high relative luminance.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Abhishek Kumar, Yaoli Zhao, Shema Rachel Abraham, Thomas Thundat, Mark T. Swihart
Summary: A low-cost sensor using Pd alloy nanosheets on paper is developed for sensitive detection of hydrogen gas. The sensor exhibits improved stability and lower detection limit compared to conventional interdigitated electrode-based sensors. This simple manufacturing method opens up possibilities for widespread use in fuel-cell vehicles and related infrastructure.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Kaiyue Guo, Guanguang Zhang, Yujie Long, Honglong Ning, Zhuohui Xu, Tian Qiu, Dongxiang Luo, Muyun Li, Rihui Yao, Junbiao Peng
Summary: Tungsten trioxide (WO3) was successfully prepared by screen printing in this study, with the addition of PVA and FSO to improve solution viscosity and wettability. The selected ink formulas and annealing process improved device performance, leading to great potential for low-cost preparation of WO3 electrochromic devices.
Article
Chemistry, Physical
D. A. Chalkias, A. Mourtzikou, G. Katsagounos, A. N. Kalarakis, E. Stathatos
Summary: Inkjet-printing is an emerging manufacturing process for perovskite solar cells with low material wastes and high production throughput. This study demonstrates the feasibility of fabricating high-quality perovskite absorbent layers using an inkjet-printable perovskite precursor ink under ambient atmosphere. The fabricated solar cells show high efficiency and stability.
Article
Chemistry, Multidisciplinary
Augustus W. Lang, Yuanyuan Li, Michel De Keersmaecker, D. Eric Shen, Anna M. Osterholm, Lars Berglund, John R. Reynolds
Article
Energy & Fuels
Sofiane Hassab, D. Eric Shen, Anna M. Osterholm, Mathias Da Rocha, Giljoo Song, Yolanda Alesanco, Ana Vinuales, Aline Rougier, John R. Reynolds, Javier Padilla
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2018)
Article
Chemistry, Physical
Graham S. Collier, Ian Pelse, Anna M. Osterholm, John R. Reynolds
CHEMISTRY OF MATERIALS
(2018)
Article
Chemistry, Physical
Anna M. Osterholm, James F. Ponder, Michel De Keersmaecker, D. Eric Shen, John R. Reynolds
CHEMISTRY OF MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Ilaria Bargigia, Lisa R. Savagian, Anna M. Osterholm, John R. Reynolds, Carlos Silva
Summary: The study investigates the electrochemically induced charged states in conjugated polymers, particularly in an oligoether-functionalized 3,4-propylenediorythiophene (ProDOT) copolymer. The research reveals a precursor electronic state with charge-transfer character that precedes polaron formation and bulk electronic conductivity. Further analysis shows the coupling of this state with primary excitons and electrochemically induced charge-separated states, providing insights into the energetic landscape of a heterogeneous polymer-electrolyte system.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Elfin L. Howard, Anna M. Osterholm, D. Eric Shen, L. Prerana Panchumarti, Carlos Pinheiro, John R. Reynolds
Summary: The article discusses the use of conjugated electrochromic polymers to optimize flexible EC displays, providing high-quality color-changing displays within budget constraints.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
D. Eric Shen, Augustus W. Lang, Graham S. Collier, Anna M. Osterholm, Evan M. Smith, Aimee L. Tomlinson, John R. Reynolds
Summary: Photodegradation of conjugated polymers still occurs under oxygen- and moisture-free conditions, which needs to be addressed in order to enhance their photostability. By studying a family of dialkoxy-functionalized thiophene polymers under oxygen-free conditions, the main degradation pathway is identified as crosslinking through the alkyl side chains, and the rate of photodegradation is influenced by the twisting of the backbone. Moving away from tertiary carbon branched side chains, utilizing quaternary carbon branches or linear chains, and relocating the branching point from the conjugated backbone are all promising strategies for improving photostability in conjugated polymers.
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Anna M. Osterholm, Linda Nhon, D. Eric Shen, Abigail M. Dejneka, Aimee L. Tomlinson, John R. Reynolds
Summary: This review provides an overview of efforts in developing anodically coloring electrochromic molecules that are transparent and colorless in the charge neutral state, and rapidly switch to a colored state upon oxidation. The use of density functional theory computational approach helps in proposing, synthesizing, and studying target molecules. Additionally, the combination of pendant phosphonic acid binding substituents with high surface area mesoporous indium tin oxide (ITO) electrodes allows for the distribution of electrochromes throughout the oxide film, bringing about high light absorption and color density.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Physical
Abigail A. Advincula, Austin L. Jones, Karl J. Thorley, Anna M. Osterholm, James F. Ponder, John R. Reynolds
Summary: Oligoether-functionalized dioxythiophene polymers are promising materials for electrochemical applications, with tunable properties and high performance in aqueous electrolytes. They exhibit rapid and reversible redox behavior, strong electrochromic contrast, and high pseudocapacitance.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Brandon T. DiTullio, Lisa R. Savagian, Olivier Bardagot, Michel De Keersmaecker, Anna M. Osterholm, Natalie Banerji, John R. Reynolds
Summary: Understanding the impact of side chains on the aqueous redox properties of conjugated polymers is crucial for their potential in bioelectrochemical devices, such as organic electrochemical transistors (OECTs). This study investigates the effect of side chains on the performance and properties of propylenedioxythiophene-based copolymers functionalized with glyme side chains. The results show that long polar side chains are not necessary for achieving high volumetric capacitance, as short hydroxy substituents can also provide high capacitance in saline-based electrolytes. Additionally, varying the length of the polar glyme chains leads to subtle changes in material properties and performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Michel De Keersmaecker, Benjamin S. Garrett, Eric Shen, Austin L. Jones, Anna M. Osterholm, Mark Mirotznik, John R. Reynolds
Summary: Conjugated polymers (CPs) can undergo reversible property changes upon electrochemical oxidation/reduction, making them popular as switchable materials. This study presents a low-voltage, low-power electrochemically controllable, switchable, and printable CP-based conductive element for frequency-reconfigurable radiative antennas. The soluble PEDOT derivative, PE2, film can be switched electrochemically by 4 orders of magnitude within 20 s, and its integration in a DC switching element allows for radiation frequency shift in the microwave range.
ACS APPLIED ELECTRONIC MATERIALS
(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)
Article
Materials Science, Multidisciplinary
Megan B. Sassin, Ashley N. Hoffmaster, Anna M. Osterholm, Chi Kin Lo, Jesse S. Ko, John R. Reynolds, Jeffrey W. Long
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Sandra L. Pittelli, Michel De Keersmaecker, James F. Ponder, Anna M. Osterholm, Melony A. Ochieng, John R. Reynolds
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
Sandra L. Pittelli, D. Eric Shen, Anna M. Osterholm, John R. Reynolds
ACS APPLIED MATERIALS & INTERFACES
(2018)
