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Liao J, Wang W, Xu X, Jian H, Yang S. Interfacial Behavior of Giant Amphiphiles Composed of Azobenzene and Polyhedral Oligomeric Silsesquioxane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1611-1620. [PMID: 35068145 DOI: 10.1021/acs.langmuir.1c03111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Giant amphiphiles containing azobenzene and polyhedral oligomeric silsesquioxane (POSS) units are synthesized by linking 4,4'-azodianiline (ADA) and POSS derivatives by stepwise amidation and further modification. The synthesized giant amphiphiles are photoresponsive and show trans-cis isomerization under ultraviolet (UV) irradiation. These giant amphiphiles are spread on the air-water interface and compressed by the barrier without and under UV irradiation. By compression, the giant amphiphiles undergo a phase transition from gas (G), liquid expanded (LE), liquid condensed (LC), and solid (S) to a final collapse on the water surface. The giant amphiphiles are cis-isomer-rich under UV irradiation and are trans-isomer-rich without UV irradiation. The trans-isomers are straight-shaped, while the cis-isomers are bent, and hence, their phase transition behaviors on the water surface exhibit a distinct difference.
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Affiliation(s)
- Jianwen Liao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Weijie Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Xian Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Hanxin Jian
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Shuguang Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
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Giles LW, Marlow JB, Butler CSG, Turpin GA, de Campo L, Mudie ST, Faul CFJ, Tabor RF. Structural relationships for the design of responsive azobenzene-based lyotropic liquid crystals. Phys Chem Chem Phys 2020; 22:4086-4095. [PMID: 32031185 DOI: 10.1039/c9cp05463d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Light-responsive binary (azobenzene + solvent) lyotropic liquid crystals (LCs) were investigated by structural modification of simple azobenzene molecules. Three benzoic acid-containing azobenzene molecules 4-(4-(hydroxyphenyl)diazenyl)benzoic acid (AZO1), 3-(4-(hydroxyphenyl)diazenyl)benzoic acid (AZO2) and 5-(4-(hydroxyphenyl)diazenyl)isophthalic acid (AZO3) were produced with various amide substitutions to produce tectons with a variety of hydrophobicity, size and branching. The LC mesophases formed by binary (azobenzene + solvent) systems with low volatility solvents dimethylsulfoxide (DMSO) and N,N-dimethylformamide (DMF) as well as the protic ionic liquids ethylammonium formate (EAF) and propylammonium formate (PAF), were investigated using a combination of small-angle X-ray and neutron scattering (SAXS and SANS) as well as polarising light microscopy (PLM). Increasing alkyl group length was found to have a strong influence on LC phase spacing, and changes in the position of substitution on the benzene ring influenced the preferred curvature of phases. UV-induced trans to cis isomerization of the samples was shown to influence ordering and optical birefringence, indicating potential applications in optical devices.
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Affiliation(s)
- Luke W Giles
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia.
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Ličen M, Masiero S, Drevenšek-Olenik I. Photoisomerizable Guanosine Derivative as a Probe for DNA Base-Pairing in Langmuir Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6550-6561. [PMID: 31030520 PMCID: PMC6727594 DOI: 10.1021/acs.langmuir.9b00429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Mixtures of azo-functionalized amphiphilic derivatives of guanosine and of amphiphilic derivatives of other DNA nucleobases were deposited at an air-water interface and repeatedly irradiated with light of 340 and 440 nm wavelengths. The consequent switching between cis and trans configurations of the azobenzene moiety caused changes in the surface pressure of the film, which were analyzed using a model based on the two-dimensional Van der Waals equation of state. For mixed films of guanosine and cytidine derivatives, the analysis revealed a significant modification of the strength of intermolecular interaction caused by the optical irradiation, while no such modifications were identified in mixed films involving other nucleobases. The difference is attributed to light-induced breaking of the hydrogen bonding that is established only between specific nucleobases. The results demonstrate that photosensitive nucleoside derivatives can be used as an efficient probe for base-pairing in Langmuir monolayers.
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Affiliation(s)
- M. Ličen
- Department
of Complex Matter, Jožef Stefan Institute, Jamova 39, SI 1000 Ljubljana, Slovenia
| | - S. Masiero
- Dipartimento
di Chimica “G. Ciamician”, Alma Mater Studiorum—Università di Bologna, Via San Giacomo 11, I-40126 Bologna, Italy
| | - I. Drevenšek-Olenik
- Department
of Complex Matter, Jožef Stefan Institute, Jamova 39, SI 1000 Ljubljana, Slovenia
- Faculty
of Mathematics and Physics, University of
Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
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McElhinny KM, Park J, Ahn Y, Huang P, Joo Y, Lakkham A, Pateras A, Wen H, Gopalan P, Evans PG. Photoisomerization Dynamics in a Densely Packed Optically Transformable Azobenzene Monolayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10828-10836. [PMID: 30145906 DOI: 10.1021/acs.langmuir.8b01524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molecular monolayers that can be reconfigured through the use of external stimuli promise to enable the creation of interfaces with precisely selected dynamically adjustable physical and electronic properties with potential impact ranging from electronics to energy storage. Azobenzene-containing molecular monolayers have multiple stable molecular conformations but face a challenging nanoscale problem associated with understanding the basic mechanisms of reconfiguration. Time-resolved X-ray reflectivity studies show that the reconfiguration of a densely packed rhenium-azobenzene monolayer occurs in a period of many seconds. The degree of reconfiguration from trans to cis forms depends on the integrated UV fluence and has kinetics that are consistent with a mechanism in which the transformation occurs through the nucleation and growth of nanoscale two-dimensional regions of the cis isomer.
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Affiliation(s)
- Kyle M McElhinny
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Joonkyu Park
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Youngjun Ahn
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Peishen Huang
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Yongho Joo
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Arunee Lakkham
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Anastasios Pateras
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Haidan Wen
- Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Padma Gopalan
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Paul G Evans
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
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Rytel K, Widelicka M, Łukawski D, Lisiecki F, Kędzierski K, Wróbel D. Ultrasonication-induced sp 3 hybridization defects in Langmuir-Schaefer layers of turbostratic graphene. Phys Chem Chem Phys 2018; 20:12777-12784. [PMID: 29697725 DOI: 10.1039/c8cp01363b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ultrasonic homogenization is the method of choice for producing and dispersing graphene. In this paper, we show that sp3 hybridization defects introduced by long high-power sonication cause a significant decrease in electrical conductivity. In order to show this, two turbostratic graphene (TG) dispersions were sonicated at two power settings of the tip sonifier at 20 W and 60 W, and for different periods varying from 1 min to 180 min. Afterwards, TG thin films were prepared by the Langmuir technique and transferred onto a quartz substrate by the Langmuir-Schaefer method. The thin films were investigated by electrical conductivity measurement, UV-VIS, Raman spectroscopy and scanning electron microscopy. We found that the relative performance of the TG thin films in terms of transparency and sheet resistance was higher than that for similarly prepared pristine graphene flakes, reported in our previous work. Moreover, despite the increase in transmittance, the electrical conductance significantly decreases with the time of sonication, especially for the 60 W sonication power. The results of Raman spectroscopy indicate that this particular behavior can be explained by the introduction of sp3 hybridization defects into the TG flakes during high power sonication.
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Affiliation(s)
- K Rytel
- Faculty of Technical Physics, Institute of Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznań, Poland.
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Hu C, Ma N, Li F, Fang Y, Liu Y, Zhao L, Qiao S, Li X, Jiang X, Li T, Shen F, Huang Y, Luo Q, Liu J. Cucurbit[8]uril-Based Giant Supramolecular Vesicles: Highly Stable, Versatile Carriers for Photoresponsive and Targeted Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4603-4613. [PMID: 29333854 DOI: 10.1021/acsami.8b00297] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly stable giant supramolecular vesicles were constructed by hierarchical self-assembly of cucurbit[8]uril (CB[8])-based supra-amphiphiles for photoresponsive and targeted intracellular drug delivery. These smart vesicles can encapsulate the model drugs with high loading efficiencies and then release them by manipulating photoswitchable CB[8] heteroternary complexation to regulate the formation and dissociation of supra-amphiphiles that cause dramatic morphological changes of the assemblies to achieve remote optically controlled drug delivery. More importantly, the confocal microscopy analysis, cellular uptake experiment, and cell viability assay have shown that the giant vesicles are able to maintain the structural integrity and stability within actual cellular environments and exhibit obvious advantages for intracellular drug delivery such as low toxicity, easy surface modification for tumor-targeting selectivity, and rapid internalization into different human cancer cell lines. A synergistic mechanism that integrates multiple pathways including energy-dependent endocytosis, macropinocytosis, cholesterol-dependent endocytosis, and microtubule-related endocytosis was determined to facilitate the internalization process. Moreover, cytotoxicity experiments and flow cytometric analysis have demonstrated that the doxorubicin hydrochloride-loaded vesicles exhibited a significant therapeutic effect for tumor cells upon UV light irradiation, which makes the photoresponsive system more promising for potential applications in pharmaceutically relevant fields.
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Affiliation(s)
- Cuihua Hu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Ningning Ma
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Fei Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Yu Fang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Yao Liu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Linlu Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Shanpeng Qiao
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Xiumei Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Xiaojia Jiang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Tiezhu Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Fangzhong Shen
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Yibing Huang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Quan Luo
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
| | - Junqiu Liu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, and ‡Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Sciences, Jilin University , 2699 Qianjin Road, Changchun 130012, China
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