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Статті в журналах з теми "Photo-responsive polymer"

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Автор: Grafiati

Опубліковано: 14 березня 2023

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1

Marturano, Valentina, Pierfrancesco Cerruti, Cosimo Carfagna, Marta Giamberini, Bartosz Tylkowski, and Veronica Ambrogi. "Photo-responsive polymer nanocapsules." Polymer 70 (July 2015): 222–30. http://dx.doi.org/10.1016/j.polymer.2015.05.059.

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2

Yu, Jong-Su, Seong-Yun Lee, Hee-Yeong Na, Tae-Jung Ahn, and Hyun-Kyoung Kim. "Photo-responsive Smart Polymer Materials." Elastomers and Composites 47, no. 4 (December 31, 2012): 282–91. http://dx.doi.org/10.7473/ec.2012.47.4.282.

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3

Romano, Angelo, Ignazio Roppolo, Elisabeth Rossegger, Sandra Schlögl, and Marco Sangermano. "Recent Trends in Applying Ortho-Nitrobenzyl Esters for the Design of Photo-Responsive Polymer Networks." Materials 13, no. 12 (June 19, 2020): 2777. http://dx.doi.org/10.3390/ma13122777.

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Анотація:

Polymers with light-responsive groups have gained increased attention in the design of functional materials, as they allow changes in polymers properties, on demand, and simply by light exposure. For the synthesis of polymers and polymer networks with photolabile properties, the introduction o-nitrobenzyl alcohol (o-NB) derivatives as light-responsive chromophores has become a convenient and powerful route. Although o-NB groups were successfully exploited in numerous applications, this review pays particular attention to the studies in which they were included as photo-responsive moieties in thin polymer films and functional polymer coatings. The review is divided into four different sections according to the chemical structure of the polymer networks: (i) acrylate and methacrylate; (ii) thiol-click; (iii) epoxy; and (iv) polydimethylsiloxane. We conclude with an outlook of the present challenges and future perspectives of the versatile and unique features of o-NB chemistry.

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4

Hao, Yuwei, Jingxin Meng, and Shutao Wang. "Photo-responsive polymer materials for biological applications." Chinese Chemical Letters 28, no. 11 (November 2017): 2085–91. http://dx.doi.org/10.1016/j.cclet.2017.10.019.

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5

Anastasiadis, Spiros H., Maria I. Lygeraki, Athanassia Athanassiou, Maria Farsari, and Dario Pisignano. "Reversibly Photo-Responsive Polymer Surfaces for Controlled Wettability." Journal of Adhesion Science and Technology 22, no. 15 (January 2008): 1853–68. http://dx.doi.org/10.1163/156856108x320014.

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6

Bin, Jonghoon, William S. Oates, and M. Yousuff Hussaini. "Fluid–structure interactions of photo-responsive polymer cantilevers." Journal of Fluids and Structures 37 (February 2013): 34–61. http://dx.doi.org/10.1016/j.jfluidstructs.2012.10.008.

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7

Sinha Roy, Pallabi, Matthieu M. Mention, Matthew A. P. Turner, Fanny Brunissen, Vasilios G. Stavros, Gil Garnier, Florent Allais, and Kei Saito. "Bio-based photo-reversible self-healing polymer designed from lignin." Green Chemistry 23, no. 24 (2021): 10050–61. http://dx.doi.org/10.1039/d1gc02957f.

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Through structure–activity relationship study and density functional theory, this research designs novel lignin-based photo-responsive crosslinkable polymer with engineerable self-healing properties by utilizing a green photo-polymerization method.

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8

Li, Qiangjun, Yongjie Yuan, Lifang He, Shenglan Liu, and Hailiang Zhang. "Preparation and characterization of a multistimuli-responsive photoluminescent monomer and its corresponding polymer." Polymer Chemistry 9, no. 46 (2018): 5521–30. http://dx.doi.org/10.1039/c8py01372a.

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9

Ahroni, Y., N. Dresler, A. Ulanov, D. Ashkenazi, M. Aviv, M. Librus, and A. Stern. "Selected Applications of Stimuli-Responsive Polymers: 4D Printing by the Fused Filament Fabrication Technology." Annals of Dunarea de Jos University of Galati Fascicle XII Welding Equipment and Technology 31 (December 28, 2020): 13–22. http://dx.doi.org/10.35219/awet.2020.02.

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In the past few years four-dimensional (4D) printing technologies have attained worldwide interest and they are now considered the "next big thing". The aim of this research is to provide three selected examples of stimuli-responsive polymer (SRP) applications additively manufactured (AM) by the fused filament fabrication (FFF) technique. To that end, a CCT BLUE filament of thermo-responsive polymer was chosen to produce a water temperature indicator, which changes colour from blue to white when temperature increases; a CCU RED filament of photo-responsive polymer was used to produce a sunlight / UV indicator bracelet; a transparent PLA CLEAR polymer, a CCU RED photo-responsive polymer, and an electrical conductive PLA polymer were selected to produce a smart business card stand. The temperature indicator capability was analysed based on examining colour changes as a function of temperature changes. The sunlight/UV indicator capability was analysed based on the inspection of colour change as a function of absorbed sun/ultraviolet light. The electrical conductivity of the conductive PLA polymer was examined by performing resistance measurements. All three objects were successfully produced and their functionality was demonstrated. We hope that these examples will catalyse the expansion of FFF 4D printed SRP applications, as much work remains to be done in designing the parts and developing FFF printing parameters that take advantage of the stimuli-responsive materials currently being developed for FFF technology.

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10

Li, Zhen, Xiaoyong Zhang, Shiqi Wang, Yang Yang, Benye Qin, Ke Wang, Tao Xie, Yen Wei, and Yan Ji. "Polydopamine coated shape memory polymer: enabling light triggered shape recovery, light controlled shape reprogramming and surface functionalization." Chemical Science 7, no. 7 (2016): 4741–47. http://dx.doi.org/10.1039/c6sc00584e.

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11

Yun, Jung-Hoon, Chenzhe Li, Hayoung Chung, Joonmyung Choi, and Maenghyo Cho. "Multiscale Analysis on Vibration of the Photo Responsive Polymer." Journal of the Computational Structural Engineering Institute of Korea 29, no. 6 (December 31, 2016): 571–75. http://dx.doi.org/10.7734/coseik.2016.29.6.571.

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12

Chang, Wen-Chi, Po-Han Chen, Chih-Ting Lin, An-Bang Wang, and Chih-Kung Lee. "Development of a Photoresponsive and Electrostrictive Material from P(VDF-TrFE-CFE) and TiOPc Composite." MRS Proceedings 1659 (2014): 69–74. http://dx.doi.org/10.1557/opl.2014.54.

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Анотація:

ABSTRACTOptical control is a reversible and convenient technology, able to be measured in real-time, which makes it excellent for application to microfluidic, biomechanical, and electro-mechanical devices. These advantages are especially attractive for photo-responsive materials. In this study, we developed a new photo-responsive, electrostrictive material from a composite material made by mixing a dielectric polymer P(VDF-TrFE-CFE) and an organic photoconductive material TiOPc. The photo-responsibility of the material has been validated by corresponding actuators. We found that under white light illumination, deformation will increase which can be attributed to a decrease in the TiOPc impedance. We identified that the optimal TiOPc concentration for actuator applications is 10% P(VDF-TrFE-CFE)/TiOPc. Moreover, controlling the fluid flow within the capillary tube through light illumination also validated the photo-responsive actuator. Our results show that the mechanism and the photo-responsive material can be used to pursue further study on light controlling microfluidic, and related electro-mechanical devices.

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13

Zhou, Yaowu, Rongrong Chen, Huiting Yang, Chunyan Bao, Jinyan Fan, Chenxi Wang, Qiuning Lin, and Linyong Zhu. "Light-responsive polymersomes with a charge-switch for targeted drug delivery." Journal of Materials Chemistry B 8, no. 4 (2020): 727–35. http://dx.doi.org/10.1039/c9tb02411e.

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14

Wang, Jing, Qian Jiang, Xingtian Hao, Hongchao Yan, Haiyan Peng, Bijin Xiong, Yonggui Liao, and Xiaolin Xie. "Reversible photo-responsive gel–sol transitions of robust organogels based on an azobenzene-containing main-chain liquid crystalline polymer." RSC Advances 10, no. 7 (2020): 3726–33. http://dx.doi.org/10.1039/c9ra10161f.

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15

Higuchi, Masayoshi. "Stimuli-responsive metallo-supramolecular polymer films: design, synthesis and device fabrication." J. Mater. Chem. C 2, no. 44 (2014): 9331–41. http://dx.doi.org/10.1039/c4tc00689e.

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16

Moriyama, Kousuke, Kimio Sumaru, Toshiyuki Takagi, Taku Satoh, and Toshiyuki Kanamori. "Dynamically controlled construction of microstructures based on photo-induced phase transition of a spirobenzopyran-modified polymer solution." RSC Advances 6, no. 50 (2016): 44212–15. http://dx.doi.org/10.1039/c6ra06281d.

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17

Khandelwal, Hitesh, Ellen P. A. van Heeswijk, Albert P. H. J. Schenning, and Michael G. Debije. "Paintable temperature-responsive cholesteric liquid crystal reflectors encapsulated on a single flexible polymer substrate." Journal of Materials Chemistry C 7, no. 24 (2019): 7395–98. http://dx.doi.org/10.1039/c9tc02011j.

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18

Li, Min-Hui, and Patrick Keller. "Artificial muscles based on liquid crystal elastomers." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 364, no. 1847 (August 21, 2006): 2763–77. http://dx.doi.org/10.1098/rsta.2006.1853.

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Анотація:

This paper presents our results on liquid crystal (LC) elastomers as artificial muscle, based on the ideas proposed by de Gennes. In the theoretical model, the material consists of a repeated series of main-chain nematic LC polymer blocks, N, and conventional rubber blocks, R, based on the lamellar phase of a triblock copolymer RNR. The motor for the contraction is the reversible macromolecular shape change of the chain, from stretched to spherical, that occurs at the nematic-to-isotropic phase transition in the main-chain nematic LC polymers. We first developed a new kind of muscle-like material based on a network of side-on nematic LC homopolymers. Side-on LC polymers were used instead of main-chain LC polymers for synthetic reasons. The first example of these materials was thermo-responsive, with a typical contraction of around 35–45% and a generated force of around 210 kPa. Subsequently, a photo-responsive material was developed, with a fast photochemically induced contraction of around 20%, triggered by UV light. We then succeeded in preparing a thermo-responsive artificial muscle, RNR, with lamellar structure, using a side-on nematic LC polymer as N block. Micrometre-sized artificial muscles were also prepared. This paper illustrates the bottom-up design of stimuli-responsive materials, in which the overall material response reflects the individual macromolecular response, using LC polymer as building block.

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19

Tian, Jia, Baoxuan Huang, Chao Xiao, and Philipp Vana. "Intelligent CO2- and photo-dual-responsive polymer vesicles with tunable wall thickness." Polymer Chemistry 10, no. 13 (2019): 1610–18. http://dx.doi.org/10.1039/c8py01743c.

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20

Shen, Ping, та Liyan Qiu. "Dual-responsive recurrent self-assembly of a supramolecular polymer based on the host–guest complexation interaction between β-cyclodextrin and azobenzene". New Journal of Chemistry 42, № 5 (2018): 3593–601. http://dx.doi.org/10.1039/c7nj05042a.

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21

Yuan, Youyong, Shidang Xu, Chong-Jing Zhang, and Bin Liu. "Light-responsive AIE nanoparticles with cytosolic drug release to overcome drug resistance in cancer cells." Polymer Chemistry 7, no. 21 (2016): 3530–39. http://dx.doi.org/10.1039/c6py00449k.

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Анотація:

A photo-active amphiphilic polymer containing a photosensitizer with aggregation-induced emission (AIE) characteristics was developed for light-responsive cytosolic drug release to overcome drug resistance.

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22

Ding, Bingbing, Hao Gao, Chao Wang, and Xiang Ma. "Reversible room-temperature phosphorescence in response to light stimulation based on a photochromic copolymer." Chemical Communications 57, no. 25 (2021): 3154–57. http://dx.doi.org/10.1039/d1cc00613d.

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Through conjugating benzothiadiazole with a viologen structure and copolymerizing in an acrylamide polymer system, efficient RTP was achieved together with photochromic properties both responsive to photo stimulation.

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23

Romano, A., M. Sangermano, E. Rossegger, I. Mühlbacher, T. Griesser, M. Giebler, G. Palmara, F. Frascella, I. Roppolo, and S. Schlögl. "Hybrid silica micro-particles with light-responsive surface properties and Janus-like character." Polymer Chemistry 12, no. 27 (2021): 3925–38. http://dx.doi.org/10.1039/d1py00459j.

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24

Tanaka, Masako, Shugo Kawai, and Yasuhiko Iwasaki. "Well-defined protein immobilization on photo-responsive phosphorylcholine polymer surfaces." Journal of Biomaterials Science, Polymer Edition 28, no. 17 (August 17, 2017): 2021–33. http://dx.doi.org/10.1080/09205063.2017.1366251.

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25

Liu, Jiansen, Xiaoqing Jiang, Xinghua Huang, Lei Zou, and Qiaochun Wang. "Photo-responsive supramolecular polymer based on a CB[5] analogue." Colloid and Polymer Science 294, no. 7 (May 11, 2016): 1243–49. http://dx.doi.org/10.1007/s00396-016-3876-9.

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26

Kim, Minkyu, and Hoyong Chung. "Photo-responsive bio-inspired adhesives: facile control of adhesion strength via a photocleavable crosslinker." Polym. Chem. 8, no. 40 (2017): 6300–6308. http://dx.doi.org/10.1039/c7py01535f.

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Анотація:

A photo-responsive bio-inspired terpolymer adhesives consisting of a zwitterionic polymer, catechol moiety, and nitrobenzyl crosslinker was synthesized for convenient control of adhesion strength under UV irradiation.

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27

Cao, Anping, Roel J. H. van Raak, and Dirk J. Broer. "Light-regulated molecular diffusion in a liquid crystal network." Soft Matter 15, no. 23 (2019): 4737–42. http://dx.doi.org/10.1039/c9sm00428a.

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Анотація:

Photo-responsive liquid crystal polymer networks offer promising means to generate useful functional devices, but many of them focus on their mechanical response so as to generate surface features or shape change. Here, we present the photomechanical effect of the polymer network for molecular transport purposes.

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28

Shi, Yang, and Zheng Chen. "Function-driven design of stimuli-responsive polymer composites: recent progress and challenges." Journal of Materials Chemistry C 6, no. 44 (2018): 11817–34. http://dx.doi.org/10.1039/c8tc02980f.

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29

junyi, Yin. "Bending Behaviors of Azobenzene-containing Liquid Crystalline Polymers (AZ-LCP): Factors Influencing Bending Direction, Frequency and Degree." E3S Web of Conferences 294 (2021): 05004. http://dx.doi.org/10.1051/e3sconf/202129405004.

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Анотація:

Liquid crystal polymers (LCP) containing azobenzene and its derivatives are fascinating and topics of intense scientific curiosities. As the addition of photo-responsive azobenzene, the LCP is exerted with the photochemical response, which shows fascinating and useful photo-induced motions and consequently enables a variety of applications in a lot of fields. In this review, we detail the macroscale mechanical motion of azobenzene containing liquid crystalline polymer (AZ-LCP) materials upon irradiation, with emphasis on the external and internal factors of bending behaviors of AZ-LCP, including bending direction, frequency and degree. We end with an outlook of challenging and competitive application as soft actuators.

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30

Qin, Chengqun, Yiyu Feng, Wen Luo, Chen Cao, Wenping Hu, and Wei Feng. "A supramolecular assembly of cross-linked azobenzene/polymers for a high-performance light-driven actuator." Journal of Materials Chemistry A 3, no. 32 (2015): 16453–60. http://dx.doi.org/10.1039/c5ta01543j.

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31

Mountaki, Stella Afroditi, Maria Kaliva, Konstantinos Loukelis, Maria Chatzinikolaidou, and Maria Vamvakaki. "Responsive Polyesters with Alkene and Carboxylic Acid Side-Groups for Tissue Engineering Applications." Polymers 13, no. 10 (May 18, 2021): 1636. http://dx.doi.org/10.3390/polym13101636.

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Main chain polyesters have been extensively used in the biomedical field. Despite their many advantages, including biocompatibility, biodegradability, and others, these materials are rather inert and lack specific functionalities which will endow them with additional biological and responsive properties. In this work, novel pH-responsive main chain polyesters have been prepared by a conventional condensation polymerization of a vinyl functionalized diol with a diacid chloride, followed by a photo-induced thiol-ene click reaction to attach functional carboxylic acid side-groups along the polymer chains. Two different mercaptocarboxylic acids were employed, allowing to vary the alkyl chain length of the polymer pendant groups. Moreover, the degree of modification, and as a result, the carboxylic acid content of the polymers, was easily tuned by varying the irradiation time during the click reaction. Both these parameters, were shown to strongly influence the responsive behavior of the polyesters, which presented adjustable pKα values and water solubilities. Finally, the difunctional polyesters bearing the alkene and carboxylic acid functionalities enabled the preparation of cross-linked polyester films by chemically linking the pendant vinyl bonds on the polymer side groups. The biocompatibility of the cross-linked polymers films was assessed in L929 fibroblast cultures and showed that the cell viability, proliferation, and attachment were greatly promoted on the polyester surface, bearing the shorter alkyl chain length side groups and the higher fraction of carboxylic acid functionalities.

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32

Wu, Shuangshuang, Wei Li, Yuqiong Sun, Xiaoliang Pang, Xuejie Zhang, Jianle Zhuang, Haoran Zhang, Chaofan Hu, Bingfu Lei, and Yingliang Liu. "Facile fabrication of a CD/PVA composite polymer to access light-responsive shape-memory effects." Journal of Materials Chemistry C 8, no. 26 (2020): 8935–41. http://dx.doi.org/10.1039/d0tc00910e.

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33

Wang, Lili, Zhe Sun, Miaomiao Ye, Yu Shao, Lei Fang, and Xiaowei Liu. "Fabrication of a cross-linked supramolecular polymer on the basis of cucurbit[8]uril-based host–guest recognition with tunable AIE behaviors." Polymer Chemistry 7, no. 22 (2016): 3669–73. http://dx.doi.org/10.1039/c6py00500d.

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Анотація:

A photo-responsive cross-linked supramolecular polymer was prepared based on a ternary host–guest molecular recognition motif between cucurbit[8]uril and 1,1-dimethyl-4,4-bipyridinium dication and azobenzene derivative, and its AIE behavior was also investigated.

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34

Marturano, Valentina, Valentina Bizzarro, Veronica Ambrogi, Adele Cutignano, Giuseppina Tommonaro, Gennaro Roberto Abbamondi, Marta Giamberini, Bartosz Tylkowski, Cosimo Carfagna, and Pierfrancesco Cerruti. "Light-Responsive Nanocapsule-Coated Polymer Films for Antimicrobial Active Packaging." Polymers 11, no. 1 (January 5, 2019): 68. http://dx.doi.org/10.3390/polym11010068.

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The development of antimicrobial active packaging constitutes a powerful tool to reduce waste and increase quality standards of perishable goods. Among numerous available antimicrobial agents, essential oils stand out for their renowned efficiency, and their use is beneficial due to their sustainability compared to other oil-based antimicrobials. In this work, we report on the use of photo-responsive nanocapsules containing thyme essential oil as functional coatings for polyethylene and polylactic acid films to obtain antimicrobial active packaging. Polymer surface activation treatment enhanced compatibility with nanocapsules solution. The films were analyzed to assess the structural and functional properties of the coating, evaluate morphological changes due to their photo-responsive behavior, and monitor the light-induced release of volatile thyme oil. It was found that 24 h after a 15-min UV exposure of the coated films, the concentration of thyme oil in the headspace was eight times higher with respect to un-irradiated films, thus confirming the efficiency of the light-triggered release system. Therefore, the manufactured films are proposed as on-demand release devices for application in non-contact antimicrobial active packaging.

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35

Podevyn, Annelore, Sandra Van Vlierberghe, Peter Dubruel, and Richard Hoogenboom. "Design and Synthesis of Hybrid Thermo-Responsive Hydrogels Based on Poly(2-oxazoline) and Gelatin Derivatives." Gels 8, no. 2 (January 18, 2022): 64. http://dx.doi.org/10.3390/gels8020064.

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Анотація:

The combination of natural and synthetic polymers to form hybrid hydrogels offers the potential of fabricating new materials that possess a combination of properties resulting from both types of polymer classes. Within this work, two alkene-functionalized poly(2-alkyl/aryl–2-oxazoline) (PAOx) copolymers and one gelatin derivative, thiolated gelatin (gel-SH), are synthesized as precursors for hybrid hydrogels through a photo-induced radical thiol-ene crosslinking process. In-situ photo-rheology revealed an increased mechanical stability for hydrogels that possess an excess amount of PAOx precursor. A final qualitative investigation of the thermo-responsive properties of a P(EtOx270–norbornenOx30):gel-SH (2:1) hydrogel film revealed a cloud point temperature (Tcp) in the same range as the Tcp of the P(EtOx270–norbornenOx30) polymer precursor, which is around 30 °C. This promising result demonstrates that thermo-responsive hybrid poly(2-oxazoline)-gelatin hydrogels could be prepared with predictable Tcps and that further investigation into this appealing feature might be of interest. Ultimately, this work shows a proof-of-concept of using PAOx as potential hybrid hydrogel precursor in combination with cell-interactive gelatin derivatives to potentially improve the mechanical stability of the final scaffolds and introduce additional features such as thermo-responsiveness for the purpose of drug delivery.

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36

Iqbal, Danish, and Muhammad Samiullah. "Photo-Responsive Shape-Memory and Shape-Changing Liquid-Crystal Polymer Networks." Materials 6, no. 1 (January 2, 2013): 116–42. http://dx.doi.org/10.3390/ma6010116.

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37

Sivaranjini, B., K. Mohana, S. Esakkimuthu, V. Ganesh, and S. Umadevi. "Photo-responsive azo-functionalised flexible polymer substrate for liquid crystal alignment." Liquid Crystals 47, no. 9 (January 29, 2020): 1354–65. http://dx.doi.org/10.1080/02678292.2020.1716276.

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38

Marturano, Valentina, Francesco Abate, Veronica Ambrogi, Valeria Califano, Pierfrancesco Cerruti, Giovanni Piero Pepe, Luciano R. M. Vicari, and Giovanni Ausanio. "Smart Coatings Prepared via MAPLE Deposition of Polymer Nanocapsules for Light-Induced Release." Molecules 26, no. 9 (May 6, 2021): 2736. http://dx.doi.org/10.3390/molecules26092736.

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Анотація:

Herein, smart coatings based on photo-responsive polymer nanocapsules (NC) and deposited by laser evaporation are presented. These systems combine remotely controllable release and high encapsulation efficiency of nanoparticles with the easy handling and safety of macroscopic substrates. In particular, azobenzene-based NC loaded with active molecules (thyme oil and coumarin 6) were deposited through Matrix-Assisted Pulsed Laser Evaporation (MAPLE) on flat inorganic (KBr) and organic (polyethylene, PE) and 3D (acrylate-based micro-needle array) substrates. SEM analyses highlighted the versatility and performance of MAPLE in the fabrication of the designed smart coatings. DLS analyses, performed on both MAPLE- and drop casting-deposited NC, demonstrated the remarkable adhesion achieved with MAPLE. Finally, thyme oil and coumarin 6 release experiments further demonstrated that MAPLE is a promising technique for the realization of photo-responsive coatings on various substrates.

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39

Qi, Shengbei, Chaoyong Liu, Meng Qin, Cheng Tao, Jie Liu, Yuan Le, Jiexin Wang, Jianjun Zhang, and Yunfeng Lu. "An efficient photo-chemo combination therapeutic platform based on targeted reduction-responsive self-crosslinked polymer nanocapsules." Materials Advances 2, no. 9 (2021): 3020–30. http://dx.doi.org/10.1039/d1ma00097g.

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Анотація:

An efficient photo-chemo combination therapeutic platform based on targeted reduction-responsive self-crosslinked four-arm PEG-PPS-cRGD nanocapsules was developed for treatment of squamous cell carcinoma.

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40

Radl, S. V., C. Schipfer, S. Kaiser, A. Moser, B. Kaynak, W. Kern, and S. Schlögl. "Photo-responsive thiol–ene networks for the design of switchable polymer patterns." Polymer Chemistry 8, no. 9 (2017): 1562–72. http://dx.doi.org/10.1039/c7py00055c.

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41

Li, Shuangwen, Yiyu Feng, Peng Long, Chengqun Qin, and Wei Feng. "The light-switching conductance of an anisotropic azobenzene-based polymer close-packed on horizontally aligned carbon nanotubes." Journal of Materials Chemistry C 5, no. 21 (2017): 5068–75. http://dx.doi.org/10.1039/c7tc00142h.

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Анотація:

We present an anisotropic photo-responsive film of azobenzene–poly(methyl methacrylate) (Azo–PMMA) close-packed on the sidewalls of horizontally aligned carbon nanotubes (HACNTs), showing anisotropic conductance and light-switching properties.

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42

Chen, Minjun, Guido Bolognesi, and Goran T. Vladisavljević. "Crosslinking Strategies for the Microfluidic Production of Microgels." Molecules 26, no. 12 (June 20, 2021): 3752. http://dx.doi.org/10.3390/molecules26123752.

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Анотація:

This article provides a systematic review of the crosslinking strategies used to produce microgel particles in microfluidic chips. Various ionic crosslinking methods for the gelation of charged polymers are discussed, including external gelation via crosslinkers dissolved or dispersed in the oil phase; internal gelation methods using crosslinkers added to the dispersed phase in their non-active forms, such as chelating agents, photo-acid generators, sparingly soluble or slowly hydrolyzing compounds, and methods involving competitive ligand exchange; rapid mixing of polymer and crosslinking streams; and merging polymer and crosslinker droplets. Covalent crosslinking methods using enzymatic oxidation of modified biopolymers, photo-polymerization of crosslinkable monomers or polymers, and thiol-ene “click” reactions are also discussed, as well as methods based on the sol−gel transitions of stimuli responsive polymers triggered by pH or temperature change. In addition to homogeneous microgel particles, the production of structurally heterogeneous particles such as composite hydrogel particles entrapping droplet interface bilayers, core−shell particles, organoids, and Janus particles are also discussed. Microfluidics offers the ability to precisely tune the chemical composition, size, shape, surface morphology, and internal structure of microgels by bringing multiple fluid streams in contact in a highly controlled fashion using versatile channel geometries and flow configurations, and allowing for controlled crosslinking.

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43

Yuan, Tingting, Jie Dong, Guoxiang Han, and Guojie Wang. "Polymer nanoparticles self-assembled from photo-, pH- and thermo-responsive azobenzene-functionalized PDMAEMA." RSC Advances 6, no. 13 (2016): 10904–11. http://dx.doi.org/10.1039/c5ra26894j.

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Анотація:

Polymer nanoparticles self-assembled from an amphiphilic azobenzene-functionalized PDMAEMA have been constructed, the morphological changes of which under stimulation of UV light, temperature and pH changes are demonstrated.

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44

Wang, Guojie, Guoxiang Han, Yongqiang Wen, and Yudong Zheng. "Photo- and pH-responsive Electrospun Polymer Films: Wettability and Protein Adsorption Characteristics." Chemistry Letters 44, no. 10 (October 5, 2015): 1368–70. http://dx.doi.org/10.1246/cl.150606.

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45

Li, Bowen, Peiran Wei, Al de Leon, Taylor Frey, and Emily Pentzer. "Polymer composites with photo-responsive phthalocyanine for patterning in color and fluorescence." European Polymer Journal 89 (April 2017): 399–405. http://dx.doi.org/10.1016/j.eurpolymj.2017.02.042.

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46

Achilleos, Demetra S., T. Alan Hatton, and Maria Vamvakaki. "Photo-Controlled Synthesis of Responsive Polymer Capsules from Hybrid Core-Shell Nanoparticles." Macromolecular Symposia 331-332, no. 1 (October 2013): 129–36. http://dx.doi.org/10.1002/masy.201300079.

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47

Yu, Liangliang, Yuxuan Zhang, Xiaocong Dai, Qin Xu, Li Zhang, and Jianbo Tan. "Open-air preparation of cross-linked CO2-responsive polymer vesicles by enzyme-assisted photoinitiated polymerization-induced self-assembly." Chemical Communications 55, no. 79 (2019): 11920–23. http://dx.doi.org/10.1039/c9cc05812e.

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Анотація:

An open-air strategy via enzyme-assisted photoinitiated polymerization-induced self-assembly (photo-PISA) in water is developed for preparing cross-linked CO₂-responsive vesicles at high solids contents.

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48

Ren, Hao, Peng Yang, and Françoise M. Winnik. "Azopyridine: a smart photo- and chemo-responsive substituent for polymers and supramolecular assemblies." Polymer Chemistry 11, no. 37 (2020): 5955–61. http://dx.doi.org/10.1039/d0py01093f.

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Анотація:

This mini-review summarizes key features of the photoisomerization of polymer-tethered azopyridine in aqueous media and describes recent accomplishments on the fast thermal cis-to-trans relaxation of azopyridinium or H-bonded azopyridine.

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49

Suzuki, T., T. Moriya, R. Endo, and N. Iwasaki. "A photo-responsive polymeric azopyridine ligand with metal-complexation sensitivity: application to coordination equilibrium studies on the polymer complexes of a cobalt(ii) Schiff base." Polymer Chemistry 8, no. 4 (2017): 761–68. http://dx.doi.org/10.1039/c6py02036d.

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50

Gupta, Mukesh K., Daniel A. Balikov, Yunki Lee, Edward Ko, Christopher Yu, Young Wook Chun, Douglas B. Sawyer, Won Shik Kim, and Hak-Joon Sung. "Gradient release of cardiac morphogens by photo-responsive polymer micelles for gradient-mediated variation of embryoid body differentiation." Journal of Materials Chemistry B 5, no. 26 (2017): 5206–17. http://dx.doi.org/10.1039/c7tb00880e.

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