scholarly journals A tool for identifying green solvents for printed electronics

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Christian Larsen ◽  
Petter Lundberg ◽  
Shi Tang ◽  
Joan Ràfols-Ribé ◽  
Andreas Sandström ◽  
...  
Keyword(s):  
High Performance ◽  
Printed Electronics ◽  
Solubility Parameters ◽  
Electrochemical Cells ◽  
Large Set ◽  
Green Solvents ◽  
Green Solvent ◽  
Hansen Solubility Parameters ◽  
Light Emitting

AbstractThe emerging field of printed electronics uses large amounts of printing and coating solvents during fabrication, which commonly are deposited and evaporated within spaces available to workers. It is in this context unfortunate that many of the currently employed solvents are non-desirable from health, safety, or environmental perspectives. Here, we address this issue through the development of a tool for the straightforward identification of functional and “green” replacement solvents. In short, the tool organizes a large set of solvents according to their Hansen solubility parameters, ink properties, and sustainability descriptors, and through systematic iteration delivers suggestions for green alternative solvents with similar dissolution capacity as the current non-sustainable solvent. We exemplify the merit of the tool in a case study on a multi-solute ink for high-performance light-emitting electrochemical cells, where a non-desired solvent was successfully replaced by two benign alternatives. The green-solvent selection tool is freely available at: www.opeg-umu.se/green-solvent-tool.

A versatile structure of light-emitting electrochemical cells for printed electronics

2020 ◽  
Vol 13 (8) ◽  
pp. 084002
Author(s):  
Yuki Tanaka ◽  
Jiang Pu ◽  
Taishi Takenobu
Keyword(s):  
Printed Electronics ◽  
Electrochemical Cells ◽  
Light Emitting

Green solvent-processed organic electronic devices

2020 ◽  
Vol 8 (43) ◽  
pp. 15027-15047
Author(s):  
Filippo Campana ◽  
Choongik Kim ◽  
Assunta Marrocchi ◽  
Luigi Vaccaro
Keyword(s):  
Thin Film ◽  
Organic Semiconductors ◽  
Organic Photovoltaics ◽  
Thin Film Transistors ◽  
High Performance ◽  
Electronic Devices ◽  
Green Solvents ◽  
Green Solvent ◽  
Organic Electronic Devices ◽  
Organic Electronic

A review on the recent efforts to select green solvents for processing organic semiconductors for thin film transistors (TFT) and organic photovoltaics (OPV) applications. A guide for the safe fabrication of high-performance devices.

scholarly journals Single step assembly of biomolecule-loaded sub-micron polysulfone fibers

2016 ◽  
Vol 87 (3) ◽  
pp. 340-350 ◽  
Author(s):  
B Ghorani ◽  
S J Russell ◽  
A J Hebden ◽  
P Goswami
Keyword(s):  
Elevated Temperature ◽  
Binary System ◽  
High Performance ◽  
Amorphous Polymer ◽  
Single Step ◽  
Solubility Parameters ◽  
Binary Solvent ◽  
Hansen Solubility Parameters ◽  
Fiber Morphology ◽  
Excellent Thermal Stability

Enrichment of chemically resistant hydrophobic polymers with polar biomolecules is relevant to the production of fiber-based drug delivery devices and adsorptive filtration media, as well as fibers for selective molecular recognition of antibodies, enzymes and nucleic acids. Polysulfone (PSU) is an amorphous polymer possessing high-strength, rigidity and excellent thermal stability. The preparation of PSU spinning solutions requires lengthy dissolution times at elevated temperature that tends to degrade commixed polar biomolecules. Using the highly polar metabolite creatinine, as a model system, a variety of co-solvents was evaluated for electrospinning commixed solutions of PSU and creatinine at room temperature. The selection of solvent systems was informed by Hansen solubility parameters. A binary system of N, N-dimethylacetamide (DMAc):methanol (4:1) was not found to be a suitable solvent because of the need for elevated temperature (80℃) to facilitate dissolution, and a binary solvent system of N, N-dimethylformamide (DMF):dimethyl sulfoxide (DMSO) (3:2) resulted in nozzle blockage during spinning. A binary system of DMAc:DMSO (13:7) enabled preparation of PSU with creatinine at ambient temperature, and sub-micron fibers substantially free of beads were produced continuously via electrospinning, yielding fiber diameters in the range 470–870 nm. The presence of creatinine was confirmed by high performance liquid chromatography (HPLC), and fiber morphology was examined by scanning electron microscopy (SEM).

scholarly journals Challenges in the development of bio-based solvents: a case study on methyl(2,2-dimethyl-1,3-dioxolan-4-yl)methyl carbonate as an alternative aprotic solvent

2017 ◽  
Vol 202 ◽  
pp. 157-173 ◽  
Author(s):  
Saimeng Jin ◽  
Fergal Byrne ◽  
Con Robert McElroy ◽  
James Sherwood ◽  
James H. Clark ◽  
...  
Keyword(s):  
Early Stage ◽  
Toxicity Testing ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Step Method ◽  
Methyl Carbonate ◽  
Synthetic Routes ◽  
Selection Of ◽  
Hansen Solubility

Many traditional solvents have drawbacks including sustainability and toxicity issues. Legislation, such as REACH, is driving the move towards less hazardous chemicals and production processes. Therefore, safer bio-based solvents need to be developed. Herein, a 10 step method has been proposed for the development of new bio-based solvents, which utilises a combination of in silico modelling of Hansen solubility parameters (HSPs), experimental Kamlet–Abboud–Taft parameters, a selection of green synthetic routes followed by application testing and toxicity measurements. The challenges that the chemical industry face in the development of new bio-based solvents are highlighted through a case study on methyl(2,2-dimethyl-1,3-dioxolan-4-yl)methyl carbonate (MMC), which can be synthesised from glycerol. Although MMC is an attractive candidate as a replacement solvent, simply being bio-derived is not enough for a molecule to be regarded as green. The methodology of solvent development described here is a broadly applicable protocol that will indicate if a new bio-based solvent is functionally proficient, and will also highlight the importance of early stage Kamlet–Abboud–Taft parameters determination and toxicity testing in the development of a green solvent.

Application of Hansen solubility approach for the subcritical and supercritical selective extraction of phlorotannins from Cystoseira abies-marina

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94884-94895 ◽  
Author(s):  
A. P. Sánchez-Camargo ◽  
L. Montero ◽  
A. Cifuentes ◽  
M. Herrero ◽  
E. Ibáñez
Keyword(s):  
Theoretical Approach ◽  
Selective Extraction ◽  
Bioactive Molecules ◽  
Solubility Parameters ◽  
Green Solvent ◽  
Hansen Solubility Parameters ◽  
Brown Macroalgae ◽  
First Time ◽  
Hansen Solubility

A new theoretical approach based on Hansen solubility parameters has been employed for the first time to select the best green solvent to extract complex bioactive molecules such as phlorotannins from brown macroalgae Cystoseira abies-marina.

scholarly journals High Voltage Electrical Discharges as an Alternative Extraction Process of Phenolic and Volatile Compounds from Wild Thyme (Thymus serpyllum L.): In Silico and Experimental Approaches for Solubility Assessment

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4131
Author(s):  
Marinela Nutrizio ◽  
Gianpiero Pataro ◽  
Daniele Carullo ◽  
Serena Carpentieri ◽  
Luisa Mazza ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
High Voltage ◽  
Extraction Process ◽  
Solubility Parameters ◽  
Total Phenolic ◽  
Green Solvents ◽  
Hansen Solubility Parameters ◽  
Wild Thyme ◽  
Thymus Serpyllum ◽  
Physical Changes

The objective of this study was to evaluate the potential of green solvents for extractions of bioactive compounds (BACs) and essential oils from wild thyme (Thymus serpyllum L.) using theoretical and experimental procedures. Theoretical prediction was assessed by Hansen solubility parameters (HSPs) and conductor-like screening model for realistic solvents (COSMO-RS), to predict the most suitable solvents for extraction of BACs. An experimental procedure was performed by nonthermal technology high voltage electrical discharge (HVED) and it was compared with modified conventional extraction (CE). Obtained extracts were analyzed for chemical and physical changes during the treatment. Theoretical results for solution of BACs in ethanol and water, as green solvents, were confirmed by experimental results, while more accurate data was given by COSMO-RS assessment than HSPs. Results confirmed high potential of HVED for extraction of BACs and volatile compounds from wild thyme, in average, 2.03 times higher yield of extraction in terms of total phenolic content was found compared to CE. The main phenolic compound found in wild thyme extracts was rosmarinic acid, while the predominant volatile compound was carvacrol. Obtained extracts are considered safe and high-quality source reach in BACs that could be further used in functional food production.

A Graphical Workflow Modeler for Docking Process in Drug Discovery

2011 ◽  
pp. 292-306
Author(s):  
Qiang Wang ◽  
Yunming Ye ◽  
Kunqian Yu ◽  
Joshua Zhexue Huang
Keyword(s):  
Drug Discovery ◽  
High Performance ◽  
Large Set ◽  
Discovery Process ◽  
Data Intensive ◽  
Discovery Research ◽  
Drug Discovery Research ◽  
Computing Grid ◽  
Server System

A drug discovery process is aimed to find from a large set of molecules the candidate leads that have strong interaction with the target proteins. The process of drug discovery is characterized by its complexity in data and computation. A useful tool to simplify the handling of intensive data and complex algorithms is necessary for domain scientists to build proper drug discovery procedures, carry through the data intensive computation tasks and produce fruitful results. This chapter presents a graphical workflow modeler for domain scientists to perform drug discovery tasks on high performance grid computing grid platforms. A client/server system is described as the platform for implementation of the graphical workflow modeler. A case study on drug discovery for avian influenza virus is given to demonstrate the use of this tool in drug discovery research.

Challenging Conventional Wisdom: Finding High-Performance Electrodes for Light-Emitting Electrochemical Cells

2018 ◽  
Vol 10 (39) ◽  
pp. 33380-33389 ◽  
Author(s):  
Jin Xu ◽  
Andreas Sandström ◽  
E. Mattias Lindh ◽  
Wei Yang ◽  
Shi Tang ◽  
...  
Keyword(s):  
High Performance ◽  
Conventional Wisdom ◽  
Electrochemical Cells ◽  
Light Emitting
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