Realizing the flexible and transparent highly-hydrophobic film through siloxane functionalized polyurethane-acrylate micro-pattern

Nguyen, Bui Quoc Huy; Shanmugasundaram, Arunkumar; Hou, Tianfeng; Park, Jong Sung

doi:10.1016/j.cej.2019.04.197

Cited by 30 publications

(7 citation statements)

References 57 publications

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“…The active functional groups play an important role during surface functionalization with low surface energy materials such as siloxane. In addition, the active functional groups improve the chemical bonding between the PUA and low surface energy siloxane [18]. The fabricated film was characterized in detail by field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FTIR) for its morphological and chemical analysis, respectively.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Hou

Shanmugasundaram

Nguyen

2019

Micro and Nano Syst Lett

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Herein, we present a facile fabrication method to prepare the optically transparent, flexible and self-cleanable poly(urethane acrylate) (PUA) superhydrophobic film. The low surface energy siloxane functionalization on the thermally activated µ-patterned PUA/graphene oxide composite (S-PG) was found to be a successful strategy to modify the PUA intrinsic hydrophilicity into superhydrophobic nature. The S-PG film (with GO content of 0.1 wt%) repeatedly showed the water contact angle (WCA) of 149.82 ± 1° with excellent self-cleaning property. Further, the fabricated film exhibited high optical transparency (80%) in the 400-800 nm wavelength region. Finally, the practical applicability of the fabricated S-PG film was demonstrated by using the film as a protective layer for solar panel module. The power conversion efficiency (PCE) of the solar module with and without S-PG superhydrophobic film was found to be 5.98% and 5.82%, respectively. The enhancement in the PCE performance of the solar module is attributed to the excellent optical transparent and less light reflecting nature of the proposed film. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Publisher's NoteSpringer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Section: Introductionmentioning

confidence: 99%

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Hou

Shanmugasundaram

Nguyen

2019

Micro and Nano Syst Lett

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“…The siloxane side chain attached far from the conjugated framework has unique solubilization due to the considerable steric hindrance that can endow the material with satisfactory solubility. At the same time, siloxane derivatives have the advantages of hydrophobicity, flexibility, and high transparency . Bao et al discovered that inserting siloxane-capped side chains into the functional conjugated polymers can diminish π–π stacking distances and formulate favorable molecular packing and preferable charge transfer capabilities .…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, siloxane derivatives have the advantages of hydrophobicity, flexibility, and high transparency. 34 Bao et al discovered that inserting siloxane-capped side chains into the functional conjugated polymers can diminish π−π stacking distances and formulate favorable molecular packing and preferable charge transfer capabilities. 35 Chen et al synthesized a series of PFBT-4T copolymers and N2200 analogues with different siloxane side chains.…”

Section: Introductionmentioning

confidence: 99%

Small-Molecule Electron Transport Layer with Siloxane-Functionalized Side Chains for Nonfullerene Organic Solar Cells

Zhou

Quan

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Active layer materials with silicone side chains have been broadly reported to have excellent long-term stability in harsh environments. However, the application of conjugated materials with silicone side chains in electron transport layers (ETLs) has rarely been reported. In this research, we synthesized for the first time a siloxane-modified perylene-diimide derivative (PDI-OSi) consisting of a side-chain substituent of siloxane and a conjugated group of perylene-diimide (PDI). The inserted siloxane functional groups not only can strengthen the light transmittance of PDI-OSi but also can remarkably expand its solubility and improve the filmforming ability and air stability of the material. Second, introducing siloxane-containing side chains can dramatically lower the work function and interfacial barrier of the electrode, thereby achieving a favorable ohmic contact. In addition, the moderate surface energy of siloxane functional groups makes PDI-OSi hydrophobic, which is conducive to forming excellent miscibility with hydrophobic active layers to promote charge transfer. When PDI-OSi is used as an ETL in organic solar cells (OSCs), operative exciton dissociation and more favorable surface morphology enable OSCs to realize a power conversion efficiency (PCE) of 13.99%. These results indicate that side-chain engineering with siloxane pendants is a facile strategy for constructing efficient OSCs.

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“…In the literature, polysiloxanes in the context of solar cell protection are used mainly as hydrophobizing and coupling agents in complex solutions [31][32][33] or as passivating layers to reduce the charge carrier recombination in silicon-PEDOT:PSS (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)). 34 To the best of our knowledge, no reports have been published on the use of polysiloxane as the sole component of the hydrophobic layer for solar cells.…”

Section: Introductionmentioning

confidence: 99%

Siloxane resins as hydrophobic self-cleaning layers for silicon and dye-sensitized solar cells: material and application aspects

et al. 2022

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Realizing the flexible and transparent highly-hydrophobic film through siloxane functionalized polyurethane-acrylate micro-pattern

Cited by 30 publications

References 57 publications

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity

Small-Molecule Electron Transport Layer with Siloxane-Functionalized Side Chains for Nonfullerene Organic Solar Cells

Siloxane resins as hydrophobic self-cleaning layers for silicon and dye-sensitized solar cells: material and application aspects

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