1
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Fluorescent sensors and rapid detection films for Fe3+ and Cu2+ based on naphthalene and cholesterol derivative organogels. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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2
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Chen X, Zhou Y, Shan J, Guo C, Wang Y. Selective colorimetric and fluorometric organogel sensors for the detection of F− and ClO− based on chiral glutamic and phenothiazine derivatives. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05050-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Development and characterization of novelly grown fire-resistant fungal fibers. Sci Rep 2022; 12:10836. [PMID: 35760942 PMCID: PMC9237064 DOI: 10.1038/s41598-022-14806-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/09/2022] [Indexed: 11/24/2022] Open
Abstract
This study conducted a comprehensive characterization and analyses on the fire-resistant behaviors of novel fungal fibers grown with substrate containing Silica (Si) source at multiple scales. At micro-scale, the results of SEM showed that silica affected the physiological activities of fungi, with the extent of effects depending upon its concentration. Fourier-transform infrared (FTIR) spectra displayed the existence of Si–O–C chemical bonds in fungal fibers grown with Si source, indicating that Si source becomes a part of the structure of fungal fibers. Thermogravimetric analysis (TGA) and Microscale combustion calorimetry (MCC) of fungal fibers exhibit an early thermal decomposition of non-combustible components, which will potentially help release the thermal stress and mitigation of spalling when used in concrete. Compared with polypropylene (PP) fibers, fungal fibers have a lower thermal degradation rate, a higher residual weight, a lower heat release peak temperature, and less total heat of combustion; all of these indicate improved thermal stability and fire resistance, and a lower rate of function loss in case of a fire. Additionally, the thermal stability and fire resistance of fungal fibers were improved with the increase of Si source concentration in the nutrition medium. For example, addition of 2% Si source in the feeding substrate leads to a 23.21% increase in residual weight in TGA, and a 23.66 W/g decrease in peak heat release rate as well as a 2.44 kJ/g reduction in total heat of combustion in MCC. At laboratory scale, compared with PP fibers, fungal fibers grown with 2% Si source have a higher residual weight of 40.40%, a higher ignition temperature of 200.50 °C, and a declined flame height of 11.64 mm in real fire scenarios. Furthermore, only in the fungal fibers grown with Si source, partial burning occurred. In post-fire conditions, the microstructure of residual char from fungal fibers grown with higher content of Si source became denser, which would lead to a reduction of the fuel vapor release and heat transfer. FTIR spectra of residual char demonstrated that fungal fibers grown with Si source formed more stable chemical bonds with higher heat of chemical bond formation, contributing to improved thermal stability and fire resistance. Therefore, compared with traditional fibers used for fiber reinforced concrete, incorporating the new natural grown fibers will potentially further improve the fire resistance of concrete and mitigate the concrete spalling.
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4
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Rim M, Kang DG, Jung D, Lim SI, Lee KM, Godman NP, McConney ME, De Sio L, Ahn SK, Jeong KU. Remote-controllable and encryptable smart glasses: a photoresponsive azobenzene molecular commander determines the molecular alignments of liquid crystal soldiers. NANOSCALE 2022; 14:8271-8280. [PMID: 35586949 DOI: 10.1039/d2nr01382g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
For the development of optically encryptable smart glass that can control the molecular alignment of liquid crystals (LCs), an azobenzene-based reactive molecule (ARM) capable of trans-cis photoisomerization is newly designed and synthesized. Photo-triggered LC-commandable smart glasses are successfully constructed by the surface functionalization technique using 3-aminopropyltriethoxysilane (APTMS) coupling agent and an ARM. The surface functionalization with the ARM is verified by spectroscopic analysis and various observations including changes in the wettability and surface morphology. Using the ARM-treated substrate, the LC command cell which can effectively switch the molecular orientation of nematic LC (E7) by the irradiation of UV and visible light is demonstrated. The results of optical investigation demonstrate the directional correlation between light and photoisomerization, revealing the tilt mechanism of azobenzene units. The capability to control the molecular orientation of LCs remotely and selectively allows the development of remote-controllable and encryptable smart glasses.
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Affiliation(s)
- Minwoo Rim
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Dong-Gue Kang
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Dayoung Jung
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Seok-In Lim
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
| | - Kyung Min Lee
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Nicholas P Godman
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Michael E McConney
- US Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Luciano De Sio
- Department of Medico-Surgical Science and Biotechnologies, Center for Biophotonics, Sapienza University of Rome, Latina 04100, Italy
| | - Suk-Kyun Ahn
- Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Republic of Korea.
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea.
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5
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Altoom NG. Synthesis and characterization of novel fluoroterphenyls: self-assembly of low-molecular-weight fluorescent organogel. LUMINESCENCE 2021; 36:1285-1299. [PMID: 33855788 DOI: 10.1002/bio.4055] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/10/2021] [Accepted: 04/11/2021] [Indexed: 12/11/2022]
Abstract
Nucleophilic aromatic substitution has been highly para selective on a range of functionalized pentafluorobenzenes. Here, we demonstrate the utility of nucleophilic aromatic substitution chemistry for the preparation of fluorinated fluorescent low-molecular-weight organogels. The molecular design, synthesis and photophysical performance of a new class of thermoreversible and fluorescent low-molecular-weight organogels from para-alkoxy-functionalized fluorinated terphenyls are described. Both CuI-catalyzed decarboxylative cross-coupling and nucleophilic aromatic substitution chemistry were used for the preparation of those highly fluorinated gelators in high yields and excellent purity via simple filtration, from the corresponding potassium fluorobenzoate salts and aryl iodides. Various fluorinated symmetrical and asymmetrical para terphenyls were prepared with various para terminal alkoxy tails. Those fluorinated terphenyls were characterized using X-ray crystallography, differential scanning calorimetry, Fourier-transform infrared spectroscopy, as well as 1 H, 13 C, and 19 F nuclear magnetic resonance. UV-visible light absorbance and emission spectra of those new materials displayed a solvatochromic and solvatofluorochromic behaviour, respectively. Self-assembly of the produced fluorinated terphenyls occurred via cooperative π-π stacking and van der Waals interactions, which resulted in gelating various organic solvents. Scanning electron microscopy displayed the formation of fibre-like nanostructures. The cytotoxicity of some selected fluorinated symmetrical and asymmetrical para terphenyls was explored.
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Affiliation(s)
- Naif Ghazi Altoom
- Department of Biology, King Khalid Military Academy, P.O. Box 22140, Riyadh, Saudi Arabia
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6
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Saito N, Itoyama S, Takahashi R, Takahashi Y, Kondo Y. Synthesis and surface activity of photoresponsive hybrid surfactants containing both fluorocarbon and hydrocarbon chains. J Colloid Interface Sci 2021; 582:638-646. [PMID: 32911411 DOI: 10.1016/j.jcis.2020.08.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS Hybrid surfactants containing both alkyl and fluoroalkyl chains within the same molecule where modification of the azobenzene group will enable us to switch the superhydrophobic nature with an external light source, and the optical behavior will vary depending on the structure of the hydrophobic chains. EXPERIMENTS Surface activity and its optically-induced variation of the azobenzene-modified hybrid surfactants were characterized using the surface tensiometry, UV-vis and NMR spectroscopy and theoretical calculation. FINDINGS The hybrid surfactants are superhydrophobic in nature reducing the surface tension of water to near 20 mN/m. Photo-isomerization of the azobenzene group induces a drastic surface tension variation (Δγ), and particularly the compositions containing the octyl-fluorocarbon chain exhibit remarkable Δγ as much as 30 mN/m which is even higher than that of the conventional surfactants (Δγ ≈ 14-20 mN/m). Theoretical calculation suggests significantly higher hydrophilicity of the cis isomer, causing the drastic switch in the surface activity. These results indicate the promise of the hybrid surfactants as efficient surface/interface manipulators.
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Affiliation(s)
- Norio Saito
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
| | - Sekito Itoyama
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Rieko Takahashi
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Yutaka Takahashi
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Yukishige Kondo
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
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7
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Saito N, Itoyama S, Kondo Y. Multi-responsive organo- and hydrogelation based on the supramolecular assembly of fluorocarbon- and hydrocarbon-containing hybrid surfactants. J Colloid Interface Sci 2020; 588:418-426. [PMID: 33429338 DOI: 10.1016/j.jcis.2020.12.103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/14/2020] [Accepted: 12/27/2020] [Indexed: 01/10/2023]
Abstract
HYPOTHESIS Novel photoresponsive hybrid surfactants, in which a combination of perfluoroalkyl and alkyl chains and cationic head groups are connected via azobenzene moieties, are excellent candidates for assembling low-molecular-weight organogels (LMOGs) with reversibly switchable viscoelasticities triggered by external stimuli. EXPERIMENTS The structure-composition-property relationships of gels assembled with the hybrid surfactants were investigated by UV-vis and NMR spectroscopy, SEM, XRD, and rheology. FINDINGS Hybrid surfactants containing perfluorohexyl chains with more than six carbons gelled in a variety of organic solvents at concentrations of less than a few percent. In particular, compositions with the perfluorooctyl and somewhat shorter hydrocarbon chains (C1-C4) gelled in both organic solvents and water. The gellable solvent species can be well grouped according to their solubility parameters, suggesting that gelation properties can be predicted from the chemical structure of the surfactant. Mechanical and structural investigations revealed that gel viscoelasticity can be reversibly altered by applying photo, shear, and heat stimuli, which is achieved through the formation and deformation of lamella-like molecular aggregates. The multi-responsive gelation and facile molecular design of the present hybrid surfactants will expand the fields in which fluorinated LMOGs can be applied.
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Affiliation(s)
- Norio Saito
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
| | - Sekito Itoyama
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Yukishige Kondo
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
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8
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Perera MM, Chimala P, Elhusain-Elnegres A, Heaton P, Ayres N. Reversibly Softening and Stiffening Organogels Using a Wavelength-Controlled Disulfide-Diselenide Exchange. ACS Macro Lett 2020; 9:1552-1557. [PMID: 35617082 DOI: 10.1021/acsmacrolett.0c00718] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Wavelength-dependent light-responsive seleno-sulfide dynamic covalent bonds were used to prepare organogels with reversible changes in stiffness. The disulfide cross-link organogels prepared from norbornene-terminated poly(ethylene glycol) (PEG-diNB) and poly(2-hydroxypropyl methacrylate-stat-mercaptoethyl acrylate) (PEG-diNB-poly(HPMA-stat-MEMA)) polymers underwent exchange reactions with 5,5'-diselenide-bis(2-aminobenzoic acid) upon irradiation with UV light. Following irradiation with visible light, the seleno-sulfide bonds were cleaved, reforming disulfide cross-links and the 5,5'-diselenide-bis(2-aminobenzoic acid). Reduction in G' with disulfide-diselenide exchange was consistent with that observed following a thiol-disulfide exchange reaction. Recovery of G' upon disulfide bond formation was 85-95% of the initial value in the as-prepared gel over five cycles of bond cleaving and reformation. This initial study shows the potential of the wavelength-controlled disulfide-diselenide chemistry to develop light-responsive reversible organogels. These organogels have the potential to be used in functional materials such as polymeric actuators or biomimetic soft robotics.
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Affiliation(s)
- M. Mario Perera
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Prathyusha Chimala
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Abdul Elhusain-Elnegres
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Paul Heaton
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
| | - Neil Ayres
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221, United States
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9
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Zhang T, Chen F, Zhang C, Che X, Li W, Bai B, Wang H, Li M. Multistimuli-Responsive Fluorescent Organogelator Based on Triphenylamine-Substituted Acylhydrazone Derivative. ACS OMEGA 2020; 5:5675-5683. [PMID: 32226844 PMCID: PMC7097906 DOI: 10.1021/acsomega.9b03534] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
A new triphenylamine-based acylhydrazone derivative (TPAH-B8) was synthesized. TPAH-B8 could form organogels in cyclohexane through ultrasonic treatment. A typical gelation-induced fluorescence enhancement property was observed, which was attributed to the formation of J-aggregate in the gel state. More interestingly, TPAH-B8 exhibited multistimuli responsive behaviors. First, TPAH-B8 showed a solvatochromic effect, with the emission color changing from blue to cyan with the change in solvent from nonpolar cyclohexane to polar dimethyl sulfoxide (DMSO). Second, TPAH-B8 showed a reversible mechanofluorochromism. The xerogel of TPAH-B8 emitted a blue fluorescence, while the fluorescence color changed to cyan after grinding. The cyan and blue colors could be repeated with the treatment of grinding and annealing, which was explored and ascribed to the transformation between crystalline and amorphous states. Third, TPAH-B8 revealed acidochromic property. The fluorescence color of TPAH-B8 in organogel and solid states could be switched by trifluoroacetic acid (TFA)/triethylamine (TEA). This work not only demonstrated the multistimuli-responsive fluorescent properties of TPAH-B8 but also offered an easy way to develop new kinds of multistimuli-responsive fluorescent materials.
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Affiliation(s)
- Tianren Zhang
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Fangyi Chen
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Chunxue Zhang
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Xiangyang Che
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Wei Li
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Binglian Bai
- College
of Physics, Jilin University, Changchun 130012, China
| | - Haitao Wang
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
| | - Min Li
- Key
Laboratory of Automobile Materials, Ministry of Education, College
of Materials Science and Engineering, Jilin
University, Changchun 130012, China
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10
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Dubey M, Dixit MK, Kumar Y, Shukla J, Chinthakuntla M. Bis(Acylhydrazone)‐Based Bolaamphiphiles: Effect of Spacer Length on Metalloorganogel Formation, Fluorescence and Conductance Properties. Chempluschem 2019. [DOI: 10.1002/cplu.201900589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mrigendra Dubey
- Indian Institute of Technology IndoreDiscipilne of metallurgy engineering and materials science Discipline of metallurgy engineering and material science (MEMS)Indian Institute of Technology Indore,, Khandwa Road, Simrol 453552 INDORE INDIA
| | | | - Yeeshu Kumar
- Indian Institute of Technology IndoreMetallugy Engineering and Materials Science INDIA
| | - Jay Shukla
- Indian Institute of Technology IndoreMetallurgy Engineering and materials Science INDIA
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11
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Ren X, Xie Z, Wu H, Shi W, Zhang Y. Multiple-responsive organogels with self-colorimetric chemo sensing responsiveness towards Hg2+ ions. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.124003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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12
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Zhang T, Zhang C, Che X, Bai B, Li M, Wang H. Benzohydrazide Derivatives: Gelation and Application in Oil Spill Recovery. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-9089-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Fang H, Zhao X, Lin Y, Yang S, Hu J. A Natural Glycyrrhizic Acid-Tailored Light-Responsive Gelator. Chem Asian J 2018; 13:1192-1198. [PMID: 29504718 DOI: 10.1002/asia.201800180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 12/17/2022]
Abstract
The construction of stimuli-responsive materials by using naturally occurring molecules as building blocks has received increasing attention owing to their bioavailability, biocompatibility, and biodegradability. Herein, a symmetrical azobenzene-functionalized natural glycyrrhizic acid (trans-GAG) was synthesized and could form stable supramolecular gels in DMSO/H2 O and MeOH/H2 O. Owing to trans-cis isomerization, this gel exhibited typical light-responsive behavior that led to a reversible gel-sol transition accompanied by a variation in morphology and rheology. Additionally, this trans-GAG gel displayed a distinct injectable self-healing property and outstanding biocompatibility. This work provides a simple yet rational strategy to fabricate stimuli-responsive materials from naturally occurring, eco-friendly molecules.
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Affiliation(s)
- Heshu Fang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Centre for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China.,State Key Lab of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Xia Zhao
- State Key Lab of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Yuan Lin
- State Key Lab of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Centre for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Jun Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.,State Key Lab of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
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14
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Synthesis and studies on gelation ability of phenol based maleate amphiphile and its application in nutraceutical release. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.08.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Chen S, An Z, Tong X, Chen Y, Ma M, Shi Y, Wang X. Stronger Intermolecular Forces or Closer Molecular Spacing? Key Impact Factor Research of Gelator Self-Assembly Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14389-14395. [PMID: 29172526 DOI: 10.1021/acs.langmuir.7b03873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The benzene ring of low-molecular-weight gelators provides strong intermolecular forces but increases molecular spacing during self-assembly. To explore both of the above influences on the gel properties, we synthesize two gelators (Glu-CBZ and Glu-DPA) consisting of the same terminal long side chain but different aliphatic functional groups. The aliphatic functional groups are carbobenzoxy group and diphenyl phosphate group. The self-assembly driving forces, self-organization patterns, network morphologies, rheological properties, and the influences of solvents are researched through 1H NMR spectra, Fourier transform infrared spectra, field-emission scanning electron microscopy images, rheological characterizations curves, tube-inversion experiment, and calculation of van't Hoff plots. The results show that the carbobenzoxy group of Glu-CBZ makes molecules pack more tightly such that it improves the gel properties during static equilibrium. Whereas the diphenyl phosphate group of Glu-DPA provides stronger intermolecular forces, performing outstandingly during dynamic equilibrium. It is advantageous to further investigate the competitive relationship in gel system between the increased number of functional groups and the consequent steric effect.
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Affiliation(s)
- Si Chen
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Zhihang An
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Xiaoqian Tong
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Yining Chen
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Meng Ma
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Yanqin Shi
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Xu Wang
- College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, China
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16
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Saito N, Kondo Y, Sawato T, Shigeno M, Amemiya R, Yamaguchi M. Pendant-Type Helicene Oligomers with p-Phenylene Ethynylene Main Chains: Synthesis, Reversible Formation of Ladderlike Bimolecular Aggregates, and Control of Intramolecular and Intermolecular Aggregation. J Org Chem 2017; 82:8389-8406. [PMID: 28686027 DOI: 10.1021/acs.joc.7b00824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pendant-type (P)-helicene oligomers with p-phenylene ethynylene main chains up to a tetramer were synthesized by a building block method. The (P)-tetramer reversibly formed a ladderlike bimolecular aggregate upon cooling and disaggregated upon heating in (trifluoromethyl)benzene. Two bis(tetramer)s, in which two (P)-tetramers were connected by hexadecamethylene linkers, were also synthesized. The head-to-tail bis(tetramer) formed an intramolecular aggregate, and the head-to-head bis(tetramer) formed an intermolecular aggregate in toluene. The results suggest the antiparallel aggregation structure of the pendant-type (P)-tetramers. The structure of the linker was proven to be effective in controlling intramolecular and intermolecular aggregations.
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Affiliation(s)
- Nozomi Saito
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
| | - Yutaro Kondo
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
| | - Tsukasa Sawato
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
| | - Masanori Shigeno
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
| | - Ryo Amemiya
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba, Sendai 980-8578, Japan
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17
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Shen J, Ding P, Gao L, Gao Y, Zhang Q, Yuan S, Xin X. Formation of organogels with aggregation-induced emission characteristics triggered by thermal and ultrasound. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4150-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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18
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Ran X, Gao Q, Zhang Y, Guo L. Colorimetry and phase transition characteristics in sensing fluoride anion based on hydrazide organogelators. RSC Adv 2017. [DOI: 10.1039/c7ra11650k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Colorimetry and phase transition characteristics in sensing fluoride anions have been achieved based on hydrazide organogelators.
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Affiliation(s)
- Xia Ran
- Institute of Micro/Nano Photonic Materials and Applications
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Qiongqiong Gao
- Institute of Micro/Nano Photonic Materials and Applications
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Yu Zhang
- Institute of Plant Stress Biology
- Henan University
- Kaifeng 475004
- People's Republic of China
| | - Lijun Guo
- Institute of Micro/Nano Photonic Materials and Applications
- Henan University
- Kaifeng 475004
- People's Republic of China
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Kuo SY, Liu CY, Balamurugan R, Zhang YS, Fitriyani S, Liu JH. Dual-responsive ALS-type organogelators based on azobenzene–cholesteryl conjugates and their self-assemblies. NEW J CHEM 2017. [DOI: 10.1039/c7nj03059b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Azobenzene and cholesteryl based derivatives (N2 and N4) were designed as gelators and their aggregation mechanism is proposed. These gelators are thermally reversible, however optically irreversible.
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Affiliation(s)
- Sheng-Yang Kuo
- Department of Chemical Engineering
- National Cheng Kung University
- Tainan 70101
- Republic of China
| | - Chun-Yen Liu
- School of Optometry and Vision Science Program
- UC Berkeley
- Berkeley
- USA
| | - Rathinam Balamurugan
- Department of Chemical Engineering
- National Cheng Kung University
- Tainan 70101
- Republic of China
| | - Yan-Song Zhang
- Department of Chemical Engineering
- National Cheng Kung University
- Tainan 70101
- Republic of China
| | - Sri Fitriyani
- Department of Chemical Engineering
- National Cheng Kung University
- Tainan 70101
- Republic of China
| | - Jui Hsiang Liu
- Department of Chemical Engineering
- National Cheng Kung University
- Tainan 70101
- Republic of China
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