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  1. 21 Jul 2022 Journal Article Journal of Materials Chemistry A

    Casein proteins as building blocks for making ion-conductive bioplastics

    Abstract

    Plastic items are an indispensable part of our society, but due to the high carbon footprint and limited degradability of many of the petrochemical-based plastics, they raise an immense ecological concern on our planet. One approach to replacing current plastics is switching to bioderived plastics (bioplastics), which are based on the use of biological materials for

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  2. 21 Jul 2022 Preprint ChemRxiv

    Photocurrent generation in artificial light-harvesting protein matrices

    Abstract

    Global interest in solar energy utilization is driving the search for new materials that allow light harvesting and photocurrent generation under a light stimulus. Light harvesting is also one of the most important natural phenomena, of which photosynthesis is an example, and such natural systems have been as well for photocurrent generation. Inspired by natural

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  3. 12 Jul 2022 Preprint ChemRxiv

    Switching of photocurrent polarity in electrochemical cells with light via an excited state proton transfer mechanism

    Abstract

    Light is the most targeted source of energy for sustainable energy technologies such as in photocurrent generation. While practically all light-harvesting types of applications utilize the electrons in their excited state (ES), here, we introduce a new conceptual approach that is based on ES proton transfer (ESPT). We use Brønsted photoacids and photobases that can

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  4. 17 Dec 2021 Journal Article ChemSusChem

    Tailoring Quantum Dot Sizes for Optimal Photoinduced Catalytic Activation of Nitrogenase

    Abstract

    Many efforts have been directed towards elucidating the nitrogenase structure, its biocatalytic activity, and methods to artificially activate it by external stimuli. Here, we investigated how semiconductor nanoparticles (NPs) with sizes ranging between 2.3–3.5 nm form nano-biohybrids with the nitrogenase enzyme and enable its photoinduced biocatalytic activity. We

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  5. 23 Nov 2021 Journal Article Advanced Materials Interfaces

    Self-Propulsion of Droplets via Light-Stimuli Rapid Control of Their Surface Tension

    Abstract

    Nature demonstrates many examples of response and adaptation to external stimuli. Here, this study focuses on self-propulsion (motion) while presenting several self-propelling droplet systems responsive to pH gradients. Light is used as the gating source to gain reversibility, avoid the formation of chemical wastes, and control the self-propulsion remotely. To achieve

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  6. 8 Nov 2021 Journal Article Angewandte Chemie International Edition

    Light-Modulated Cationic and Anionic Transport across Protein Biopolymers

    Abstract

    Light is a convenient source of energy and the heart of light-harvesting natural systems and devices. Here, we show light-modulation of both the chemical nature and ionic charge carrier concentration within a protein-based biopolymer that was covalently functionalized with photoacids or photobases. We explore the capability of the biopolymer-tethered photoacids and

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  7. 12 Aug 2021 Journal Article Advanced Materials

    A Protein-Based Free-Standing Proton-Conducting Transparent Elastomer for Large-Scale Sensing Applications

    Abstract

    A most important endeavor in modern materials’ research is the current shift toward green environmental and sustainable materials. Natural resources are one of the attractive building blocks for making environmentally friendly materials. In most cases, however, the performance of nature-derived materials is inferior to the performance of carefully designed synthetic

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  8. 1 Jul 2021 Journal Article Chemical Science

    Long-range light-modulated charge transport across the molecular heterostructure doped protein biopolymers

    Abstract

    Biological electron transfer (ET) across proteins is ubiquitous, such as the notable photosynthesis example, where light-induced charge separation takes place within the reaction center, followed by sequential ET via intramolecular cofactors within the protein. Far from biology, carbon dots (C-Dots) with their unique optoelectronic properties can be considered as

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  9. 6 May 2021 Patent Applied at: WO

    Protein-Based Films

    Abstract

    Protein based highly stretchable compositions with ionic conductivity are disclosed herein. Methods for preparing such compositions are also disclosed.

  10. 15 Mar 2021 Journal Article Materials Advances

    The role of the protein–water interface in dictating proton conduction across protein-based biopolymers

    Abstract

    Proton conducting polymers have become central in recent years, and especially for energy related applications. As such, unraveling their proton transport mechanism is of prime importance, specifically the different contribution of proton transport across bulk water inside the polymer vs. the transport at the interface between the polymer and water. In recent years

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