Bacterial cellulose membrane as flexible substrate for organic light emitting devices

Legnani, Cristiano; Vilani, Cecília; Calil, Vanessa L.; Barud, Hernane S.; Quirino, Welber G.; Achete, C. A.; Ribeiro, Sidney José Lima; Cremona, M.

doi:10.1016/j.tsf.2008.06.011

Cited by 187 publications

(117 citation statements)

References 17 publications

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“…Pristine BC membrane, Figure 1a (inset), is a semi-transparent material presenting an average transmittance at 550 nm of around 45% [4] . The light transmittance of BC/PCL membrane is 84% at 550 nm (Figure 1b).…”

Section: Resultsmentioning

confidence: 99%

“…The high transmittance is due primarily to the lateral size of the reinforcing elements; the light scattering is avoided by BC nanofibers which are smaller than the wavelength of light [1] . This increase on the transparency in the visible range of the electromagnetic spectrum is an important characteristic for the fabrication of flexible OLEDs [1][2][3][4] . SEM image of the BC membrane surface, Figure 2a, reveals a 3-D fibrilar organization consisting of an ultrafine cellulose nanofibers network named "nanocelluloses".…”

Section: Resultsmentioning

confidence: 99%

“…The main applications of these novel materials include BC membranes as substrates for flexible organic lighting emission (FOLED) [4] , optically transparent BC-composites [5] and matrix for electronic papers [6] . Bacterial cellulose membranes are produced by Gluconacetobacter xylinus strain in carbohydrate rich culture medium.…”

Section: Introductionmentioning

confidence: 99%

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Optically transparent membrane based on bacterial cellulose/polycaprolactone

et al. 2013

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Optically transparent membranes from bacterial cellulose (BC)/polycaprolactone (PCL) have been prepared by impregnation of PCL acetone solution into dried BC membranes. UV-Vis measurements showed an increase on transparency in BC/PCL membrane when compared with pristine BC. The good transparency of the BC/PCL can be related to the presence of BC nanofibers associated with deposit of PCL nano-sized spherulites which are smaller than the wavelength of visible light and practically free of light scattering. XRD results show that cellulose type I structure is preserved inside the BC/PCL membrane, while the mechanical properties suggested indicated that PCL acts as a plasticizer for the BC membrane. The novel BC/PCL membrane could be used for preparation of fully biocompatible flexible display and biodegradable food packaging.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Optically transparent membrane based on bacterial cellulose/polycaprolactone

et al. 2013

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“…Cellulose is the natural polymer (polysaccharide) which is the most abundant material in the world, synthesized by plants, algae and also some species of bacteria (Legnani et al, 2008), thereby, it is a biodegradable material. From the structure of Yanin Hosakun -PhD Thesis 24 Introduction and Problem Statement cellulose, there are the strong hydrogen bonds between cellulose chains, hence, cellulose does not melt or dissolve in ordinary solvents (Wu and Yuan, 2002).…”

Section: -Cellulosementioning

confidence: 99%

“…Bacterial cellulose is produced by Gram-negative bacteria (Gluconacetobacter xylinus), which shows several unique properties when compared to plant cellulose (Legnani et al, 2008). This aerobic Gram-negative bacteria is active when fermented at pH 3-7 and temperature range 25 to 30°C using saccharides as carbon source (Esa et al, 2014).…”

Section: -Bacterial Cellulosementioning

confidence: 99%