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Nudelman R, Alhmoud H, Delalat B, Kaur I, Vitkin A, Bourgeois L, Goldfarb I, Cifuentes-Rius A, Voelcker NH, Richter S. From nanoparticles to crystals: one-pot programmable biosynthesis of photothermal gold structures and their use for biomedical applications. J Nanobiotechnology 2022; 20:482. [PMID: 36384747 PMCID: PMC9670439 DOI: 10.1186/s12951-022-01680-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/18/2022] [Indexed: 11/17/2022] Open
Abstract
Inspired by nature, green chemistry uses various biomolecules, such as proteins, as reducing agents to synthesize metallic nanostructures. This methodology provides an alternative route to conventional harsh synthetic processes, which include polluting chemicals. Tuning the resulting nanostructure properties, such as their size and shape, is challenging as the exact mechanism involved in their formation is still not well understood. This work reports a well-controlled method to program gold nanostructures' shape, size, and aggregation state using only one protein type, mucin, as a reduction and capping material in a one-pot bio-assisted reaction. Using mucin as a gold reduction template while varying its tertiary structure via the pH of the synthesis, we demonstrate that spherical, coral-shaped, and hexagonal gold crystals can be obtained and that the size can be tuned over three orders of magnitude. This is achieved by leveraging the protein's intrinsic reducing properties and pH-induced conformational changes. The systematic study of the reaction kinetics and growth steps developed here provides an understanding of the mechanism behind this phenomenon. We further show that the prepared gold nanostructures exhibit tunable photothermal properties that can be optimized for various hyperthermia-induced antibacterial applications.
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Li W, Liu Q, Zhang Y, Li C, He Z, Choy WCH, Low PJ, Sonar P, Kyaw AKK. Biodegradable Materials and Green Processing for Green Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001591. [PMID: 32584502 DOI: 10.1002/adma.202001591] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/30/2020] [Indexed: 06/11/2023]
Abstract
There is little question that the "electronic revolution" of the 20th century has impacted almost every aspect of human life. However, the emergence of solid-state electronics as a ubiquitous feature of an advanced modern society is posing new challenges such as the management of electronic waste (e-waste) that will remain through the 21st century. In addition to developing strategies to manage such e-waste, further challenges can be identified concerning the conservation and recycling of scarce elements, reducing the use of toxic materials and solvents in electronics processing, and lowering energy usage during fabrication methods. In response to these issues, the construction of electronic devices from renewable or biodegradable materials that decompose to harmless by-products is becoming a topic of great interest. Such "green" electronic devices need to be fabricated on industrial scale through low-energy and low-cost methods that involve low/non-toxic functional materials or solvents. This review highlights recent advances in the development of biodegradable materials and processing strategies for electronics with an emphasis on areas where green electronic devices show the greatest promise, including solar cells, organic field-effect transistors, light-emitting diodes, and other electronic devices.
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Affiliation(s)
- Wenhui Li
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qian Liu
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Yuniu Zhang
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chang'an Li
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhenfei He
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wallace C H Choy
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Paul J Low
- School of Molecular Sciences, The University of Western Australia, Perth, WA, 6009, Australia
| | - Prashant Sonar
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Aung Ko Ko Kyaw
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
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Nudelman R, Gloukhikh E, Rekun A, Richter S. Investigation of the pH-dependence of dye-doped protein-protein interactions. Protein Sci 2016; 25:1918-1923. [PMID: 27599458 DOI: 10.1002/pro.3021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/16/2016] [Accepted: 08/16/2016] [Indexed: 11/09/2022]
Abstract
Proteins can dramatically change their conformation under environmental conditions such as temperature and pH. In this context, Glycoprotein's conformational determination is challenging. This is due to the variety of domains which contain rich chemical characters existing within this complex. Here we demonstrate a new, straightforward and efficient technique that uses the pH-dependent properties of dyes-doped Pig Gastric Mucin (PGM) for predicting and controlling protein-protein interaction and conformation. We utilize the PGM as natural host matrix which is capable of dynamically changing its conformational shape and adsorbing hydrophobic and hydrophilic dyes under different pH conditions and investigate and control the fluorescent properties of these composites in solution. It is shown at various pH conditions, a large variety of light emission from these complexes such as red, green and white is obtained. This phenomenon is explained by pH-dependent protein folding and protein-protein interactions that induce different emission spectra which are mediated and controlled by means of dye-dye interactions and surrounding environment. This process is used to form the technologically challenging white light-emitting liquid or solid coating for LED devices.
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Affiliation(s)
- Roman Nudelman
- School of Chemistry Faculty of Exact Sciences, Tel- Aviv University, Tel-Aviv, Israel.,Center for Nanoscience and nanotechnology, Tel- Aviv University, Tel-Aviv, Israel
| | - Ekaterina Gloukhikh
- School of Chemistry Faculty of Exact Sciences, Tel- Aviv University, Tel-Aviv, Israel.,Center for Nanoscience and nanotechnology, Tel- Aviv University, Tel-Aviv, Israel
| | - Antonina Rekun
- School of Chemistry Faculty of Exact Sciences, Tel- Aviv University, Tel-Aviv, Israel
| | - Shachar Richter
- Center for Nanoscience and nanotechnology, Tel- Aviv University, Tel-Aviv, Israel. .,The Department of Materials Science and Engineering, Faculty of Engineering, Tel- Aviv University, Tel-Aviv, Israel.
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