Dual light and temperature responsive cotton fabric functionalized with a surface-grafted spiropyran–NIPAAm-hydrogel

Schiphorst, Jeroen ter; Broek, Marloes van den; Koning, T. de; Murphy, Jeffrey J.; Schenning, Albertus P. H. J.; Esteves, A. Catarina C.

doi:10.1039/c6ta00161k

Cited by 84 publications

(50 citation statements)

References 41 publications

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“…Despite their chemical nature, distinguishing features of sur faces are their physical properties, such as roughness, porosity or topology. [119] Without light, the spi ropyran (Sp) moiety isomerizes to the protonated, hydrophilic merocyanine, leading to water uptake from humid air and swelling of the hydrogel coating. Broer and coworkers have reported the dynamic surface of a pNIPAAm hydrogel with lightabsorbing CrO 2 .…”

Section: Adaptive Surfacesmentioning

confidence: 99%

Design and Applications of Photoresponsive Hydrogels

2019

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materials with diverse applications in var ious fields due to their tunable chemistry structure and physical properties as well as excellent biocompatibility. [2][3][4][5] Hydrogel research has evolved from static mate rials to smart ones, whose structures and property show responsiveness to external stimuli, including temperature, pH, light, electric or magnetic fields, and the pres ence of enzymes or ion concentrations. [6][7][8][9][10][11] This unprecedented level of control over material properties has driven both med ical and industrial fields into the realm of possibility: controlled drug delivery, [12] chemical sensors, [13] soft actuators or robotics, [14][15][16] or scaffolds for dynamic 3D cell culture. [17] Photoresponsiveness is attractive due to the inherent advan tages of light as stimulus. Light is non invasive and allows remote manipulation of materials without requiring additional reagents, thus, with limited byproducts. Modulation of irradiation parameters, such as light intensity and irradiation time, permits the pre cise control of irradiation dosage, thereby, the degree of photo reactions. Spatial control can be achieved in both 2D and 3D, and temporal control is possible by simply turning the respec tive light source on or off. Wavelengthselective photo chemical reactions can be used for orthogonal photomediation of hydrogel properties. [18] Photoresponsive hydrogels, as externally tunable materials, strongly contribute to the field of soft smart materials in regard to the abovementioned applications. [19] In this review, we elaborate on the design and the emerging appli cations of photoresponsive hydrogels. A comprehensive review about utilizing light for the formation of hydrogels is given by Mi and coworkers. [20] First, we discuss responsive modes and photochemical mechanisms of photoresponsive hydrogels. Fol lowing this, we highlight their applications for dynamic cell environments, smart biointerfaces, controlled drug delivery, photodriven actuators, and lighthealing materials. The review concludes with an outlook on the challenges and potential future approaches for photo responsive hydrogels. Light as Stimulus for Hydrogels Macroscopic Hydrogel PhotoresponsesThe interaction of light with photoresponsive hydrogels can result in different responses, some of which are observable with the bare eye. Those include hydrogel formation or degradation, network contraction or expansion, and chemical modifications in the network, which then have an immediate consequence on Hydrogels are the most relevant biochemical scaffold due to their tunable properties, inherent biocompatibility, and similarity with tissue and cell environments. Over the past decade, hydrogels have developed from static materials to "smart" responsive materials adapting to various stimuli, such as pH, temperature, chemical, electrical, or light. Light stimulation is particularly interesting for many applications because of the capability of contact-free remote manipulation of biomaterial properties and inherent spatial and t...

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Section: Adaptive Surfacesmentioning

confidence: 99%

Design and Applications of Photoresponsive Hydrogels

2019

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“…Responsive micromixers that change shape using light as a stimulus would be appealing, as it allows to control mixing, in a noninvasive, noncontact fashion . Hydrogels such as poly‐ N ‐isopropylacrylamide (pNIPAAM) have received a lot of attention, as the shape can be changed from a swollen to a collapsed state with temperature . This shape change can also be achieved using light by incorporation of a photochromic dye in the polymer hydrogel .…”

Section: Introductionmentioning

confidence: 99%

Photoresponsive Passive Micromixers Based on Spiropyran Size‐Tunable Hydrogels

Schiphorst

Melpignano

Amirabadi

et al. 2017

Macromol. Rapid Commun.

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Microfluidic devices allow the manipulation of fluids down to the micrometer scale and are receiving a lot of attention for applications where low volumes and high throughputs are required. In these micro channels, laminar flow usually dominates, which requires long residence times of the fluids, limiting the flow speed and throughput. Here a switchable passive mixer has been developed to control mixing and to easily clean microchannels. The mixer is based on a photoresponsive spiropyran based hydrogel of which the dimensions can be tuned by changing the intensity of the light. The size-tunable gels have been used to fabricate a passive slanted groove mixer that can be switched off by light allowing to change mixing of microfluidics to non-mixed flows. These findings open new possibilities for multi-purpose microfluidic devices where mixers and valves can be tuned by light.

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“…More recently, Schiphorst et al reported a novel thermal/light dual-responsive cotton fabric functionalized with a surface-grafted spiropyran-NIPAAm hydrogel. This dual-responsive fabric was shown to be capable of dimensional changes upon irradiation with visible light or a temperature stimulus and may find application in breathable textiles and agricultural purposes with moisture collection capacity [136].…”

Section: Hydrogel Technology Application Of Hydrogel In Functional Tementioning

confidence: 99%

“…Textiles functionalized with hydrogel have been extensively exploited over the past few decades [135,136]. Hydrogel can endow textiles, including cotton, polyester, silk, and hemp, with novel functionalities such as aesthetic appeal, healthcare, and smart wetting properties [135].…”

Section: Hydrogel Technology Application Of Hydrogel In Functional Tementioning

confidence: 99%

Functionalized Textile Based Therapy for the Treatment of Atopic Dermatitis

2017

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Atopic dermatitis (AD) is a common chronic inflammatory skin condition characterized by intense puritus and skin dryness. The pathogenesis for AD has not been fully understood to date. Complementary therapies are very popular as effective treatment for AD among clinical practitioners. This study presents a comprehensive review of published works associated with textiles-based complementary therapies for AD treatment such as wet-wrap dressing, functionalized textiles, and the application of hydrogel techniques in the textile industry to provide a better understanding of the development and design of new textiles-based transdermal therapies.

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Dual light and temperature responsive cotton fabric functionalized with a surface-grafted spiropyran–NIPAAm-hydrogel

Abstract: A dual-responsive cotton fabric functionalized with a spiropyran–NIPAAm hydrogel, capable of dimensional changes upon irradiation with visible light or upon a temperature stimulus is reported.

Cited by 84 publications

References 41 publications

Design and Applications of Photoresponsive Hydrogels

Design and Applications of Photoresponsive Hydrogels

Photoresponsive Passive Micromixers Based on Spiropyran Size‐Tunable Hydrogels

Functionalized Textile Based Therapy for the Treatment of Atopic Dermatitis

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