Photo-switched wettability on an electrostatic self-assembly azobenzene monolayer

Jiang, Wuhui; Wang, Guojie; He, Yaning; Wang, Xiaogong; An, Yi; Song, Yanlin; Jiang, Lei

doi:10.1039/b504479k

Cited by 191 publications

(119 citation statements)

References 27 publications

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“…This results in the surface roughening shown and the microstructure responsible for the changing of the substrate to a hydrophilic condition. It has been shown that the surface roughness can be an effective tool for changing the contact angle [14]. A similar structure here is believed to be created, and that this causes the change to hydrophilicity as it is supported by figure 3 (a) and (b).…”

Section: Discussionsupporting

confidence: 62%

Modification of Aluminium Surface Using Picosecond Laser for Printing Applications

et al. 2009

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Ultrafast picosecond laser pulses of wavelength of 1064nm have allowed the surface modification of anodised aluminium plate for potential industrial application. The interaction of the laser with the substrate created a hydrophilic surface, giving a contact angle of less than 10 degrees. On examination under a Scanning Electron Microscope (SEM), it was observed that these surfaces have an interesting 'lotus-leaf' like structure. It has been found that these laser processed hydrophilic surfaces revert with time. The potential for application in the printing industry is strong due to the reusability and sustainability of the process materials; initial trials confirm this. This technology would offer extra advantages as a non-chemical process without the need for developer, thereby reducing the overall cost and time of printing.

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Section: Discussionsupporting

confidence: 62%

Modification of Aluminium Surface Using Picosecond Laser for Printing Applications

et al. 2009

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“…48,49 After activation of a patterned silicon wafer, azobenzene-containing polymers can be spin or dip coated onto the surface. Isomerisation of trans-azobenzene into the cis-isomer leads to large changes in wettability, depending on the spacing of the pillars.…”

Section: Photoresponsive Wettabilitymentioning

confidence: 99%

Stimuli-responsive photonic polymer coatings

2014

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This feature article focuses on the highlights in the development of photonic polymer coatings that can change their volume or surface topology in a reversible, dynamic fashion when exposed to an external stimulus. Topographic response is established using hydrogels or liquid crystal polymer networks. By changing the surface corrugation in response to light various functional coating properties can be modulated, for instance wettability and/or mechanical friction. The same volume changes in photonic coatings caused by different stimuli lead to changes in light reflection.

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“…Recently an azobenzene copolymer assembled into polyelectrolyte multilayer showed a modest 21 change in contact angle with UV light irradiation. However, when the same copolymer was assembled onto a patterned substrate, the change in contact angle upon irradiation was enhanced to 701 (Jiang et al, 2005). It is well established that surface roughness plays a role in contact angle and many systems can be optimized to give rise to a large change in surface properties.…”

Section: Macroscopic Motionmentioning

confidence: 99%

Azobenzene Polymers for Photonic Applications

Yager¹,

Barrett²

2008

Smart Light‐Responsive Materials

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Photo-switched wettability on an electrostatic self-assembly azobenzene monolayer

Abstract: A simple electrostatic self-assembly technique was used to fabricate a photo-switched azobenzene monolayer, on which superhydrophobicity and a large reversible CA change could be realized.

Cited by 191 publications

References 27 publications

Modification of Aluminium Surface Using Picosecond Laser for Printing Applications

Modification of Aluminium Surface Using Picosecond Laser for Printing Applications

Stimuli-responsive photonic polymer coatings

Azobenzene Polymers for Photonic Applications

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