Plant-derived cis-β-ocimene as a precursor for biocompatible, transparent, thermally-stable dielectric and encapsulating layers for organic electronics

Bazaka, Kateryna, Destefani, Ryan, and Jacob, Mohan V. (2016) Plant-derived cis-β-ocimene as a precursor for biocompatible, transparent, thermally-stable dielectric and encapsulating layers for organic electronics. Scientific Reports, 6. 38571. pp. 1-14.

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This article presents low-temperature, one-step dry synthesis of optically transparent thermally-stable, biocompatible cis-β-ocimene-based thin films for applications as interlayer dielectric and encapsulating layer for flexible electronic devices, e.g. OLEDs. Morphological analysis of thin films shows uniform, very smooth (R q < 1 nm) and defect-free moderately hydrophilic surfaces. The films are optically transparent, with a refractive index of ∼1.58 at 600 nm, an optical band gap of ∼2.85 eV, and dielectric constant of 3.5-3.6 at 1 kHz. Upon heating, thin films are chemically and optically stable up to at least 200 °C, where thermal stability increases for films manufactured at higher RF power as well as for films deposited away from the plasma glow. Heating of the sample increases the dielectric constant, from 3.7 (25 °C) to 4.7 (120 °C) at 1 kHz for polymer fabricated at 25 W. Polymers are biocompatible with non-adherent THP-1 cells and adherent mouse macrophage cells, including LPS-stimulated macrophages, and maintain their material properties after 48 h of immersion into simulated body fluid. The versatile nature of the films fabricated in this study may be exploited in next-generation consumer electronics and energy technologies.

Item ID: 49122
Item Type: Article (Research - C1)
ISSN: 2045-2322
Keywords: chemical biology, plasma physics
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© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit

Date Deposited: 13 Jun 2017 00:03
FoR Codes: 34 CHEMICAL SCIENCES > 3405 Organic chemistry > 340599 Organic chemistry not elsewhere classified @ 50%
51 PHYSICAL SCIENCES > 5106 Nuclear and plasma physics > 510602 Plasma physics; fusion plasmas; electrical discharges @ 50%
SEO Codes: 85 ENERGY > 8598 Environmentally Sustainable Energy Activities > 859899 Environmentally Sustainable Energy Activities not elsewhere classified @ 50%
86 MANUFACTURING > 8606 Industrial Chemicals and Related Products > 860604 Organic Industrial Chemicals (excl. Resins, Rubber and Plastics) @ 50%
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