Spray-coating deposition techniques for polymeric semiconductor blends

Bernardin, Gavin A.; Davies, Nathan; Finlayson, Chris E.

doi:10.1016/j.mssp.2017.07.026

Cited by 13 publications

(7 citation statements)

References 33 publications

(36 reference statements)

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“…Spray technique is one of the powerful ways to produce a film or coating materials. Resultant characteristics of this technique are highly beneficial to sensor technology, for example, the ability to simultaneously provide high throughput, efficient use of material, increase large surface areas, excellent for distribution of chemosensor and comfortable for use …”

Section: Resultsmentioning

confidence: 99%

Spray coating thin polymeric sensor films for Au³⁺

Chansri

Wanno

Keawwangchai

et al. 2019

J of Applied Polymer Sci

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A novel polymeric sensor of the poly(sodium-4-styrenesulfonate) (PSS)-modified rhodamine B derivative (Rho) was synthesized using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/N,N 0 -dimethylpyridin-4-amine (DMAP) as coupling reagents to obtain PSS-Rho4 in 21% yield. The characterization and "Off-On" sensing phenomena were established through UV-Vis, fluorescence, NMR, and FTIR techniques. The PSS-Rho4 showed high selectivity and sensitivity for Au 3+ over other metal ions. Upon the addition of Au 3+ , significant color change and "Off-On" fluorescence were observed due to a cation Au 3+ induced spirolactam ring-opening process with detection limit down to micromolar values (1.2 μM). In addition, spray coating thin polymeric sensor films were produced onto the surface of material (PSS-Rho4-ITO and PSS-Rho4-filtered paper) providing a fast, portable, and easy-to-use molecular device for the detection of Au 3+ in the real system. Reversibility was evaluated by rinsing with EDTA solution under basic condition. We believe that, this approach provides a sensitive and accurate method for the detection of Au 3+ in environmental and biological applications.

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Section: Resultsmentioning

confidence: 99%

Spray coating thin polymeric sensor films for Au³⁺

Chansri

Wanno

Keawwangchai

et al. 2019

J of Applied Polymer Sci

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“…When the material surface is rather complex because of the specific 3D geometry, like in case of cardiac prosthesis, the spray coating technique is preferable to be used as in this case rather thin layer of a polymer solution may be deposited with controlled thickness 28 . Unlike conventional coating techniques, a spraying allows relatively fast drying, which prevents the treated surface from collecting dust.…”

Section: Introductionmentioning

confidence: 99%

Enhanced water and oxygen barrier performance of flexible polyurethane membranes for biomedical application

Marcano

Fatyeyeva

Koun

et al. 2021

J Biomedical Materials Res

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In order to improve water and oxygen barrier properties, the surface of two commercial medical grade polyurethane (PU) membranes (Chronoflex® AR‐LT and Bionate® II) was modified by a spray deposited film of poly(ethylene‐co‐vinyl alcohol) (EVOH). The influence of the temperature, the deposited layer thickness and the EVOH ethylene group percentage (27%, 32%, and 44% for EVOH27, EVOH32, and EVOH44, respectively) on the barrier properties of the PU/EVOH multilayered membranes was investigated. The increase of the EVOH layer thickness leads to higher oxygen barrier properties (the highest barrier improvement factor of 412 was obtained). However, in case of the deposited layer thickness higher than 18 μm, microcracks appeared on the treated surface promote a significant loss of the barrier effect. Due to its higher crystallinity degree, EVOH27 provides a higher oxygen barrier effect compared to EVOH32 and EVOH44. On the contrary, an increase of the water barrier properties was observed with the increase of the percentage of ethylene groups. Moreover, the delamination of the EVOH layer was noted after water permeation, especially in case of EVOH44, which is the most hydrophobic layer. Nevertheless, significant decrease of the water and oxygen permeability of the modified PU membranes was achieved, thus showing the benefit of using the EVOH spray deposition for the biomedical application, which requires high performance material with flexible and barrier properties.

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“…Green [5] et al used airbrush spray deposition to fabricate the active layer in ambient conditions, and improve homogeneity of the layer. Bernardin [6] et al developed a universal method for spray-deposition of polymeric semiconductor blends, and adjustable experimental parameters are flow rate, solvent, material concentration, nozzle-substrate distance, and substrate temperature. Girotto [7] et al used internal mixing airbrush Badger 200 NH to spray coating Ag nanoparticle solution, the fabricated cells show performances comparable to those of reference devices with evaporated top-contacts.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Uniformity Analysis and Improvement of Spray Deposition by Mixing Nozzles with Heating Conditions

et al. 2020

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Spray coating is widely used in the manufacture of deposited layers of electronic devices due to its unique advantages of high-speed deposition over a large area. To improve the spray deposition process for further low-cost and uniform production, the uniformity of the spray deposition should be systematically investigated. The current study, however, mainly focuses on the experimental trials with few numerical directions especially for the mixing nozzle sprayers with heating conditions. In the paper, we conduct a theoretical study on the uniformity of the internal and external mixing nozzles. The influencing factors include the initial angle, the total ink flow rate, the transporting gas velocity and the distance from the nozzle to the substrate. Then, the orthogonal test method is adopted to obtain the optimal combination of the parameters. Finally, the effects of different heating modes on the uniformity have been further studied. The results show that these factors influence the uniformity with the two types of nozzles to a different degree. The evaporation of the atomized droplets can effectively improve the uniformity in a certain temperature range. The heating temperature with the highest uniformity is various depending on the heating modes, which should be carefully addressed during the actual production.

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Spray-coating deposition techniques for polymeric semiconductor blends

Cited by 13 publications

References 33 publications

Spray coating thin polymeric sensor films for Au³⁺

Spray coating thin polymeric sensor films for Au³⁺

Enhanced water and oxygen barrier performance of flexible polyurethane membranes for biomedical application

Theoretical Uniformity Analysis and Improvement of Spray Deposition by Mixing Nozzles with Heating Conditions

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Spray-coating deposition techniques for polymeric semiconductor blends

Cited by 13 publications

References 33 publications

Spray coating thin polymeric sensor films for Au3+

Spray coating thin polymeric sensor films for Au3+

Enhanced water and oxygen barrier performance of flexible polyurethane membranes for biomedical application

Theoretical Uniformity Analysis and Improvement of Spray Deposition by Mixing Nozzles with Heating Conditions

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Spray coating thin polymeric sensor films for Au³⁺

Spray coating thin polymeric sensor films for Au³⁺