&lt;title&gt;Electrostatic self-assembly processes for noncentrosymmetric thin films and devices&lt;/title&gt;

Lenahan, Kristie M.; Liu, Yanjing; Wang, You-Xiong; Claus, Richard O.

doi:10.1117/12.352783

Cited by 4 publications

(1 citation statement)

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“…With this technique it is possible to tune the composition of the layers at molecular scale, fabricate interesting composite materials in a simple and inexpensive way onto substrates composed by almost any material and with almost any size or shape. This technique has been successfully demonstrated in many applications such as conductive coatings [7], antireflective coatings [8], sensitive coatings [9][10][11][12][13][14], organic light emitting diodes [15], photovoltaic cells [16], and so forth.…”

Section: Introductionmentioning

confidence: 99%

Study and Optimization of Self‐Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications

et al. 2007

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The characterization of nanostructured thin films is critical in the design and fabrication of optical sensors. Particularly, this work is a detailed study of the properties of layer-by-layer electrostatic self-assembled multilayer (LbL) structures fabricated using poly(allylamine hydrochloride) (PAH) and Neutral Red (NR) as cations, and poly(acrylic acid) (PAA) as polyanion. These LbL films, due to the colorimetric properties of the NR, are suitable for sensor applications such as pH sensing in the physiological range. In the (PAH+NR/PAA) LbL structure, it has been observed a very important influence of the pH of the solutions in the properties of the resultant films. Different techniques such as spectroscopy and atomic force microscopy (AFM) are combined to characterize the films, and the results are analyzed showing coherence with previous works. The LbL structure is finally optimized and dramatically improved nanostructured films were fabricated, showing good sensing properties, short response times, and good stability.

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