1
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Romero-Ben E, Castillejos MC, Rosales-Barrios C, Expósito M, Ruda P, Castillo PM, Nardecchia S, de Vicente J, Khiar N. Divergent approach to nanoscale glycomicelles and photo-responsive supramolecular glycogels. Implications for drug delivery and photoswitching lectin affinity. J Mater Chem B 2023; 11:10189-10205. [PMID: 37853786 DOI: 10.1039/d3tb01713c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
The field of stimuli-responsive supramolecular biomaterials has rapidly advanced in recent years, with potential applications in diverse areas such as cancer theranostics, tissue engineering, and catalysis. However, designing molecular materials that exhibit predetermined hierarchical self-assembly to control the size, morphology, surface chemistry, and responsiveness of the final nanostructures remains a significant challenge. In this study, we present a divergent synthetic approach for the fabrication of spherical micelles and functional 1D-glyconanotube-based photoresponsive gels from structurally related diazobenzene/diacetylene glycolipids. The resulting nanostructures were characterized using NMR, TEM, and SEM, confirming the formation of spherical and tubular nanostructures in both the gel and solution states. Upon UV irradiation, a reversible gel-sol transition was observed, resulting from the photoswitching of the azobenzene unit from the stretched trans form to the compact, metastable cis form. Our gels were shown to enable spatio-temporal control of the adhesion and release of the lectin Concanavalin A, demonstrating potential use as regenerable biomaterials to fight against infections with toxins and pathogens. Additionally, our micelles and gels were evaluated as nanocontainers for loading and controlled release of hydrophobic dyes and antitumoural agents, suggesting their possible use as smart theranostic drug delivery systems.
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Affiliation(s)
- Elena Romero-Ben
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - M Carmen Castillejos
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - Cristian Rosales-Barrios
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - María Expósito
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - Pilar Ruda
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - Paula M Castillo
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
| | - Stefania Nardecchia
- Department of Applied Physics and Excellence Research Unit 'Modeling Nature' (MNat), Faculty of Sciences, University of Granada, C/Fuentenueva s/n, 18071 - Granada, Spain
| | - Juan de Vicente
- Department of Applied Physics and Excellence Research Unit 'Modeling Nature' (MNat), Faculty of Sciences, University of Granada, C/Fuentenueva s/n, 18071 - Granada, Spain
| | - Noureddine Khiar
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Seville, Spain.
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Xu X, Cheng J, Zhao H, He W, Zhang L, Cheng Z. Second-Generation Soft Actuators Driven by NIR Light Based on Croconaine Dye-Doped Vitrimers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41916-41926. [PMID: 37610709 DOI: 10.1021/acsami.3c08973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Soft actuators with photo-response can be selectively driven by the light source, but it is challenging to achieve a selective response of multiple components under a uniform light field, which is actually of great importance for the development of soft robots. In this work, a series of near-infrared light (NIR)-responsive vitrimers (CR-vitrimers) are synthesized by carboxylate transesterification using carboxyl-bearing croconaine dye (CR-800) as a photothermal agent (PTA). NIR-responsive liquid crystalline elastomers (CR-vitrimer-LCEs) under NIR laser (λmax = 808 nm) without the template can be further prepared. More importantly, the dynamic covalent bonding properties of vitrimer allow for the fabrication of a hand-shaped actuator by hot pressing, consisting of "fingers" with different NIR-response threshold values. After programming as needed, the hand-shaped actuator successfully achieves local and sequential control under a uniform NIR light field.
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Affiliation(s)
- Xiang Xu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jiannan Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Haitao Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Weiwei He
- State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences (RADX), Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, China
| | - Lifen Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhenping Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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3
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Manipulating the structures and photoresponsive properties of an azobenzene-containing triblock copolymer by changing solvency and adding salts. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Ma JY, Hsu KL, Mata JP, Wu CM, Lo CT. Solvency and salt addition influence the photoresponsivity and fluorescence in an azobenzene-containing block copolymer. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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5
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Dattler D, Fuks G, Heiser J, Moulin E, Perrot A, Yao X, Giuseppone N. Design of Collective Motions from Synthetic Molecular Switches, Rotors, and Motors. Chem Rev 2019; 120:310-433. [PMID: 31869214 DOI: 10.1021/acs.chemrev.9b00288] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Precise control over molecular movement is of fundamental and practical importance in physics, biology, and chemistry. At nanoscale, the peculiar functioning principles and the synthesis of individual molecular actuators and machines has been the subject of intense investigations and debates over the past 60 years. In this review, we focus on the design of collective motions that are achieved by integrating, in space and time, several or many of these individual mechanical units together. In particular, we provide an in-depth look at the intermolecular couplings used to physically connect a number of artificial mechanically active molecular units such as photochromic molecular switches, nanomachines based on mechanical bonds, molecular rotors, and light-powered rotary motors. We highlight the various functioning principles that can lead to their collective motion at various length scales. We also emphasize how their synchronized, or desynchronized, mechanical behavior can lead to emerging functional properties and to their implementation into new active devices and materials.
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Affiliation(s)
- Damien Dattler
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Gad Fuks
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Joakim Heiser
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Emilie Moulin
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Alexis Perrot
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Xuyang Yao
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
| | - Nicolas Giuseppone
- SAMS Research Group, Institute Charles Sadron, CNRS , University of Strasbourg , 23 rue du Loess , BP 84047, 67034 Strasbourg Cedex 2 , France
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6
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Tai HT, Lin YC, Ma JY, Lo CT. Hydrogen Bonding-Induced Assembled Structures and Photoresponsive Behavior of Azobenzene Molecule/Polyethylene Glycol Complexes. Polymers (Basel) 2019; 11:E1360. [PMID: 31426429 PMCID: PMC6723479 DOI: 10.3390/polym11081360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/15/2019] [Accepted: 08/15/2019] [Indexed: 11/22/2022] Open
Abstract
We investigated the self-assembled structures and photoresponsive and crystallization behaviors of supramolecules composed of 4-methoxy-4'-hydroxyazobenzene (Azo) molecules and polyethylene glycol (PEG) that were formed through hydrogen-bonding interactions. The Azo/PEG complexes exhibited the characteristics of photoresponse and crystallization, which originated from Azo and PEG, respectively. When Azo/PEG complexes were dissolved in solvents, hydrogen-bonding interaction hindered the rotation and inversion of mesogens, causing a reduction in the photoisomerization rate compared with the photoisomerization rate of the neat Azo. The confinement of Azo/PEG complexes in thin films further resulted in a substantial decrease in the photoisomerization rate but an increase in the amounts of H-aggregated and J-aggregated mesogens. Regarding PEG crystallization, ultraviolet irradiation of Azo/PEG complexes increased the quantity of high-polarity cis isomers, which improved the compatibility between mesogens and PEG, subsequently increasing the crystallization temperature of PEG. Moreover, the complexation of Azo and PEG induced microphase separation, forming a lamellar morphology. Within the Azo-rich microphases, mesogens aggregated to form tilted monosmectic layers. By contrast, PEG crystallization within the PEG-rich microphases was hard confined, indicating that the domain size of the lamellar morphology was unchanged during PEG crystallization.
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Affiliation(s)
- Hsin-Tzu Tai
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Yen-Chun Lin
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Jing-Yao Ma
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Chieh-Tsung Lo
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
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7
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Bujak K, Orlikowska H, Sobolewska A, Schab-Balcerzak E, Janeczek H, Bartkiewicz S, Konieczkowska J. Azobenzene vs azopyridine and matrix molar masses effect on photoinduced phenomena. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Cai F, Huang Z, Zheng F, Lu X, Lu Q. Enhancement of the Photoalignment Stability of Block Copolymer Brushes by Anchor Segments. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Cai
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Zhangjun Huang
- Institute des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; CH-1015 Lausanne Switzerland
| | - Feng Zheng
- School of Chemical Science and Engineering; Tongji University; Shanghai 200092 China
| | - Xuemin Lu
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Qinghua Lu
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; Shanghai 200240 China
- School of Chemical Science and Engineering; Tongji University; Shanghai 200092 China
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9
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Huang PC, Mata JP, Wu CM, Lo CT. Morphology-Mediated Photoresponsive and Fluorescence Behaviors of Azobenzene-Containing Block Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7416-7427. [PMID: 29863876 DOI: 10.1021/acs.langmuir.8b01033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigated the relationship between the self-assembled morphology of poly( tert-butyl acrylate)- block-poly(6-[4-(4'-methoxyphenylazo)phenoxy]hexyl methacrylate) (P tBA- b-PAzoMA) block copolymers and their photoresponsive and fluorescence behaviors. The morphology of P tBA- b-PAzoMA copolymers was manipulated by dissolving them in mixed dimethylformamide (DMF)/hexanol solvents. When P tBA- b-PAzoMA was dissolved in DMF-rich (neutral) solvents, a favorable interaction between the DMF molecules and both blocks resulted in a random-coiled conformation. The unconfined morphology facilitated the formation of both nonassociated and head-to-head organized azobenzene mesogens, which promoted fluorescence emission. When hexanol, a P tBA-selective solvent, was added to DMF, the solvency of P tBA- b-PAzoMA worsened, leading to its assembly into micelles, with PAzoMA in the micelle core. The confinement of azobenzene moieties in the micelle core hindered their trans-to- cis photoisomerization, thereby considerably decreasing the kinetics of photoisomerization and the population of cis isomers. Additionally, a nanoconfined geometry resulted in compactly packed chromophores, causing fluorescence loss. When P tBA- b-PAzoMA was exposed to UV light, the increased number of cis isomers hampered the closely packed mesogens, resulting in a substantial enhancement of fluorescence emission. When the mole fraction of the PAzoMA block was increased, P tBA- b-PAzoMA formed clusters, causing the slow kinetics of photoisomerization and fluorescence quenching.
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Affiliation(s)
- Pin-Chi Huang
- Department of Chemical Engineering , National Cheng Kung University , Tainan City 701 , Taiwan
| | - Jitendra P Mata
- Australian Centre for Neutron Scattering , Australian Nuclear Science and Technology Organization , Lucas Heights , New South Wales 2234 , Australia
| | - Chun-Ming Wu
- National Synchrotron Radiation Research Center , 101 Hsin-Ann Road, Hsinchu Science Park , Hsinchu 30076 , Taiwan
| | - Chieh-Tsung Lo
- Department of Chemical Engineering , National Cheng Kung University , Tainan City 701 , Taiwan
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10
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Lee TL, Lo CT. Photoresponsive and fluorescence behaviors of azobenzene-containing amphiphilic block copolymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24323] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ting-Lei Lee
- Department of Chemical Engineering; National Cheng Kung University; No. 1, University Road Tainan City Taiwan 701
| | - Chieh-Tsung Lo
- Department of Chemical Engineering; National Cheng Kung University; No. 1, University Road Tainan City Taiwan 701
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11
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Cai F, Zheng F, Lu X, Lu Q. Control of the alignment of liquid crystal molecules on a sequence-polymerized film by surface migration and polarized light irradiation. Polym Chem 2017. [DOI: 10.1039/c7py01576c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A terminal azobenzene-containing terpolymer with excellent thermal stability and transparency was developed for the photo-alignment of liquid crystal molecules.
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Affiliation(s)
- Feng Cai
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Feng Zheng
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
| | - Xuemin Lu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Qinghua Lu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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12
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Ren JM, McKenzie TG, Fu Q, Wong EHH, Xu J, An Z, Shanmugam S, Davis TP, Boyer C, Qiao GG. Star Polymers. Chem Rev 2016; 116:6743-836. [PMID: 27299693 DOI: 10.1021/acs.chemrev.6b00008] [Citation(s) in RCA: 526] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent advances in controlled/living polymerization techniques and highly efficient coupling chemistries have enabled the facile synthesis of complex polymer architectures with controlled dimensions and functionality. As an example, star polymers consist of many linear polymers fused at a central point with a large number of chain end functionalities. Owing to this exclusive structure, star polymers exhibit some remarkable characteristics and properties unattainable by simple linear polymers. Hence, they constitute a unique class of technologically important nanomaterials that have been utilized or are currently under audition for many applications in life sciences and nanotechnologies. This article first provides a comprehensive summary of synthetic strategies towards star polymers, then reviews the latest developments in the synthesis and characterization methods of star macromolecules, and lastly outlines emerging applications and current commercial use of star-shaped polymers. The aim of this work is to promote star polymer research, generate new avenues of scientific investigation, and provide contemporary perspectives on chemical innovation that may expedite the commercialization of new star nanomaterials. We envision in the not-too-distant future star polymers will play an increasingly important role in materials science and nanotechnology in both academic and industrial settings.
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Affiliation(s)
- Jing M Ren
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Thomas G McKenzie
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Qiang Fu
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Edgar H H Wong
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Zesheng An
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University , Shanghai 2000444, People's Republic of China
| | - Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash Institute of Pharmaceutical Sciences, Monash University , Parkville, Victoria 3052, Australia.,Department of Chemistry, University of Warwick , Coventry CV4 7AL, United Kingdom
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Greg G Qiao
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
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13
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Kaupp M, Hiltebrandt K, Trouillet V, Mueller P, Quick AS, Wegener M, Barner-Kowollik C. Wavelength selective polymer network formation of end-functional star polymers. Chem Commun (Camb) 2016; 52:1975-8. [DOI: 10.1039/c5cc09444e] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A wavelength selective technique for light-induced network formation is introduced, combining RAFT for precursor and DLW for 3D-structure generation.
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Affiliation(s)
- Michael Kaupp
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
| | - Kai Hiltebrandt
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
| | - Vanessa Trouillet
- Institute for Applied Materials (IAM) and Karlsruhe Nano Micro Facility (KMNF)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Patrick Mueller
- Institut für Angewandte Physik
- Institut für Nanotechnologie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Alexander S. Quick
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
| | - Martin Wegener
- Institut für Angewandte Physik
- Institut für Nanotechnologie
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - Christopher Barner-Kowollik
- Preparative Macromolecular Chemistry
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
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15
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De Mitri N, Prampolini G, Monti S, Barone V. Structural, dynamic and photophysical properties of a fluorescent dye incorporated in an amorphous hydrophobic polymer bundle. Phys Chem Chem Phys 2014; 16:16573-87. [PMID: 24988373 PMCID: PMC4618303 DOI: 10.1039/c4cp01828a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The properties of a low molecular weight organic dye, namely 4-naphthyloxy-1-methoxy-2,2,6,6-tetramethylpiperidine, covalently bound to an apolar polyolefin were investigated by means of a multi-level approach, combining classical molecular dynamics simulations, based on purposely parameterized force fields, and quantum mechanical calculations based on density functional theory (DFT) and its time-dependent extension (TD-DFT). The structure and dynamics of the dye in its embedding medium were analyzed and discussed taking the entangling effect of the surrounding polymer into account, and also by comparing the results to those obtained for a different environment, i.e. toluene solution. Finally, the influence was investigated of long lived cages found in the polymeric embedding on photophysical properties, in terms of the slow and fast dye's internal dynamics, by comparing computed IR and UV spectra with their experimental counterparts.
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Affiliation(s)
- N De Mitri
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
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16
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Tsao SC, Lo CT. Photoresponsive behavior and self-organization of azobenzene-containing block copolymers. RSC Adv 2014. [DOI: 10.1039/c4ra03724c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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