Functionally Engineered Egg Albumen Gel for Quasi-Solid Dye Sensitized Solar Cells

Kelkar, Sarika; Pandey, Komal; Agarkar, Shruti; Saikhedkar, Nidhi; Tathavadekar, Mukta; Agrawal, Ishita; Rathna, G. V. N.; Ogale, Satishchandra

doi:10.1021/sc5004488

Cited by 26 publications

(20 citation statements)

References 33 publications

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“…Albumen, also called egg white, consists primarily of ~90% water and ~10% proteins (including predominantly of albumins and a small fraction of mucoproteins and globumins). Water solubility, emulsifying ability and ionic conductivity of chicken albumen are remarkably good ascribed to various hydrophilic functional groups such as -COOH, -NH 2 , -SH and -OH 21 . The ionic conductivity was mainly due to the presence of water, which facilitated proton transport, as demonstrated by Darvishi et al .…”

Section: Resultsmentioning

confidence: 99%

Artificial Synaptic Devices Based on Natural Chicken Albumen Coupled Electric-Double-Layer Transistors

Feng

Wan

et al. 2016

Sci Rep

112

100

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Recent progress in using biomaterials to fabricate functional electronics has got growing attention for the new generation of environmentally friendly and biocompatible electronic devices. As a kind of biological material with rich source, proteins are essential natural component of all organisms. At the same time, artificial synaptic devices are of great significance for neuromorphic systems because they can emulate the signal process and memory behaviors of biological synapses. In this report, natural chicken albumen with high proton conductivity was used as the coupling electrolyte film for organic/inorganic hybrid synaptic devices fabrication. Some important synaptic functions including paired-pulse facilitation, dynamic filtering, short-term to long-term memory transition and spatial summation and shunting inhibition were successfully mimicked. Our results are very interesting for biological friendly artificial neuron networks and neuromorphic systems.

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Section: Resultsmentioning

confidence: 99%

Artificial Synaptic Devices Based on Natural Chicken Albumen Coupled Electric-Double-Layer Transistors

Feng

Wan

et al. 2016

Sci Rep

112

100

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“…The exploration of controlled (dis)assembly of proteins by photo/electron irradiation for positive and negative lithography potentially could be a general principle to design novel bioresists at submicron resolution. In the context of wide use of egg white as functional key block in a variety of high‐tech fields, successful micro/nanolithography on this material with high precision is anticipated to have profound implication in advanced biomimetics, electronic, optical and sensor applications, where a spatial definable property on a substrate is highly demanding and challenging …”

Section: Resultsmentioning

confidence: 99%

“…Fifth, by converting liquid egg white to denatured aggregate, the resultant material could have a good dielectrics constant and smooth surface morphology, which make it a good candidate for dielectrics interlayer . Due to the above features, egg white has been flexibly explored as a functional key block or template in the fields of varnish for painting protection, bionic electronic and proton devices, gel electrolyte in a solar cell, light‐absorbing material, and biomineralization …”

Section: Introductionmentioning

confidence: 99%

Water‐Based Photo‐ and Electron‐Beam Lithography Using Egg White as a Resist

Jiang

Yang

et al. 2017

Adv Materials Inter

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human life. [1][2][3] To achieve such a dream, choosing natural biomaterials such as nucleic acids, [4][5][6] peptides, [7] proteins, [8,9] and polysaccharides [10] as the substitutes of fossil source-based synthetic chemicals is a promising way. Correspondingly, micro/ nanoscale fabrication on natural biomaterials receives great of importance, [11] and a spatially definable property with high precision to exactly position biomaterials on a surface is highly desirable [12][13][14][15][16][17][18] toward biodegradable and biocompatible green electronic, [19][20][21][22] optical, [23][24][25][26][27][28][29] sensor, [30] energy, [31] and environmental devices. [32] Typical examples down this road include silk fibroin, [12][13][14] polysaccharides, [10] and DNA origami-mediated lithography. [5] These approaches are part of great efforts to develop "green" lithographic processing in semiconductor industry that is eligible to lessen the exposure of workers and environment toward noxious chemical and reduce waste. [13] The adoption of these strategies allows the replacement of organic solvent with water to cast and develop a resist, accompanied with the exclusion of environmentally harmful components from material processing and fabrication. However, so far the lithographic processes based on existing natural biomaterials are difficult to be exploited in scale-up industrial application, because their limited quantities, high material, and processing cost as well as small deposition area impede the practical engineering of these biomaterials. [9] Moreover, the less-controlled variation on polymorph and polydispersity of biomaterials often influences the repeatability of results. [33] Recently, our group reported the use of phase-transited lysozyme nanofilm as the resist for photolithography and electron-beam lithography (EBL), with the cost being decreased and practical applicability being potentially demonstrated. [17] Continuous efforts along this way further require much cheaper material and simpler fabrication process for large-scale industrial uses. In this respect, we pay attention to egg white due to the following reasons. First, egg white is a very common natural biomaterial just taken from egg as our daily food, which makes it has great natural abundance with a low cost. Second, in contrast to other natural competitors usually requiring strict demands on the purity, polydispersity, and polymorph stability, egg white is a combination of multiple functional nutrients, [34] which could be directly utilized without further purification and Complex lithographic steps and the use of toxic chemicals in these processes are in conflict with a sustainable human society. Development of new inexpensive and green resist, simple alternative procedures, and nontoxic solvents is the key to move recyclable micro/nanofabrication from laboratory level to industrial application in large scale. Herein, precise control on protein fragmentation/aggregation upon photo/electron irradiation is conceived into egg white-based green resist...

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“…This specic peptide sequence contains functional groups, including -OH, -COOH, -NH 2 , and -SH, which are known to be hydrophilic and to exhibit good ionic conductivity. 12,13 There are few amino acids that take critical role in proton conduction in biological systems. Especially, amino acids with phenol groups, for example tyrosine, are known to be an important constituents that construct proton-coupled electron transfer observable in ribonucleotide reductase 14 and photosystem II 15 in association with inorganic clusters.…”

Section: Introductionmentioning

confidence: 99%