Spiropyran-incorporated honeycomb porous films with reversible multistimuli-responsive properties

Xie, Junwen; Zhang, Junming; Han, Yuhang; Ma, Yingyi; Li, Jingfang; Zhu, Min

doi:10.1039/d2tc00749e

Cited by 13 publications

(6 citation statements)

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“…The three presented systems had a specific reaction to moisture: (I) the wrinkling was utterly reversible, (II) wrinkles appear but can be removed only permanently, and III) wrinkles that appear cannot be erased. The patterned surface can be modified with dynamic components to gain newly added functionalities, such as in the report by Xie et al [270]. The porous honeycomb film [271] was enriched with spiropyran, providing photothermal and acidchromic properties.…”

Section: Systems Responsive To Changes In the Chemical Environmentmentioning

confidence: 99%

Adaptive 2D and Pseudo-2D Systems: Molecular, Polymeric, and Colloidal Building Blocks for Tailored Complexity

et al. 2023

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Two-dimensional and pseudo-2D systems come in various forms. Membranes separating protocells from the environment were necessary for life to occur. Later, compartmentalization allowed for the development of more complex cellular structures. Nowadays, 2D materials (e.g., graphene, molybdenum disulfide) are revolutionizing the smart materials industry. Surface engineering allows for novel functionalities, as only a limited number of bulk materials have the desired surface properties. This is realized via physical treatment (e.g., plasma treatment, rubbing), chemical modifications, thin film deposition (using both chemical and physical methods), doping and formulation of composites, or coating. However, artificial systems are usually static. Nature creates dynamic and responsive structures, which facilitates the formation of complex systems. The challenge of nanotechnology, physical chemistry, and materials science is to develop artificial adaptive systems. Dynamic 2D and pseudo-2D designs are needed for future developments of life-like materials and networked chemical systems in which the sequences of the stimuli would control the consecutive stages of the given process. This is crucial to achieving versatility, improved performance, energy efficiency, and sustainability. Here, we review the advancements in studies on adaptive, responsive, dynamic, and out-of-equilibrium 2D and pseudo-2D systems composed of molecules, polymers, and nano/microparticles.

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Section: Systems Responsive To Changes In the Chemical Environmentmentioning

confidence: 99%

Adaptive 2D and Pseudo-2D Systems: Molecular, Polymeric, and Colloidal Building Blocks for Tailored Complexity

et al. 2023

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“…But even in these cases, immersion in water (or previous wetting for prolonged times) of the SP-functionalized polymers was needed for CO 2 detection, as it requires carbonic acid formation. In addition, no proof was given about the sensing selectivity of these materials for CO 2 relative to other gaseous or dissolved acids (e.g., HCl), which are also known to promote the acidochromic response of nitrospiropyrans within polymer matrices ( Nam et al, 2014 ; Genovese et al, 2015 ; Genovese et al, 2017 ; Rad et al, 2020 ; Guo et al, 2021 ; Xie et al, 2022 ). In those cases, the formation of a yellow protonated SP species was instead observed upon acid exposure, which is in better agreement with the well-established behavior of nitrospiropyrans in solution ( Kortekaas et al, 2018 ; Kortekaas and Browne, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Spiropyran-based chromic hydrogels for CO2 absorption and detection

et al. 2023

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By enabling rapid, cost-effective, user-friendly and in situ detection of carbon dioxide, colorimetric CO2 sensors are of relevance for a variety of fields. However, it still remains a challenge the development of optical chemosensors for CO2 that combine high sensitivity, selectivity and reusability with facile integration into solid materials. Herein we pursued this goal by preparing hydrogels functionalized with spiropyrans, a well-known class of molecular switches that undergo different color changes upon application of light and acid stimuli. By varying the nature of the substituents of the spiropyran core, different acidochromic responses are obtained in aqueous media that allow discriminating CO2 from other acid gases (e.g., HCl). Interestingly, this behavior can be transferred to functional solid materials by synthesizing polymerizable spiropyran derivatives, which are used to prepare hydrogels. These materials preserve the acidochromic properties of the incorporated spiropyrans, thus leading to selective, reversible and quantifiable color changes upon exposure to different CO2 amounts. In addition, CO2 desorption and, therefore, recovery of the initial state of the chemosensor is favored by irradiation with visible light. This makes spiropyran-based chromic hydrogels promising systems for the colorimetric monitorization of carbon dioxide in a diversity of applications.

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“…Owing to the flexible design and easy preparation, many phtotoswitchable fluorescent polymeric nanoparticles and films have been developed for the construction of encryption or anti-counterfeiting system. 4,7,[14][15][16][17][18] However, nanoparticles with poor processability and films with low flexibility in the regulation of optical performance still hinder their applicability in anticounterfeiting and information encryption. [19][20][21] Therefore, the development of novel PFPs with excellent processability and the flexibility of optical performance regulation are desired for anticounterfeiting and encryption.…”

Section: Introductionmentioning

confidence: 99%

Dual host–guest interaction-mediated photoswitchable fluorescent supramolecular polymers for anti-counterfeiting and encryption

Wang,

Tang,

Deng

et al. 2023

J. Mater. Chem. C

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Spiropyran-incorporated honeycomb porous films with reversible multistimuli-responsive properties

Abstract: Spiropyran (SP)-incorporated honeycomb-structured porous film which combines the attractive features of honeycomb-patterned porous structure with the excellent stimulus responsiveness of SP was successfully prepared by the simple, low-cost and environmentally...

Cited by 13 publications

References 50 publications

Adaptive 2D and Pseudo-2D Systems: Molecular, Polymeric, and Colloidal Building Blocks for Tailored Complexity

Adaptive 2D and Pseudo-2D Systems: Molecular, Polymeric, and Colloidal Building Blocks for Tailored Complexity

Spiropyran-based chromic hydrogels for CO2 absorption and detection

Dual host–guest interaction-mediated photoswitchable fluorescent supramolecular polymers for anti-counterfeiting and encryption

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