1
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Panja S. Dosimetric gelator probes and their application as sensors. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Sudhakaran Jayabhavan S, Ghosh D, Damodaran KK. Making and Breaking of Gels: Stimuli-Responsive Properties of Bis(Pyridyl- N-oxide Urea) Gelators. Molecules 2021; 26:molecules26216420. [PMID: 34770831 PMCID: PMC8587056 DOI: 10.3390/molecules26216420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/27/2022] Open
Abstract
The structural modification of existing supramolecular architecture is an efficient strategy to design and synthesize supramolecular gels with tunable and predictable properties. In this work, we have modified bis(pyridyl urea) compounds with different linkers, namely hexylene and butylene, to their corresponding bis(pyridyl-N-oxide urea). The gelation properties of both the parent and the modified compounds were studied, and the results indicated that modification of the 3-pyridyl moieties to the corresponding 3-pyridyl-N-oxides induced hydrogelation. The stability of the parent and modified compounds were evaluated by sol-gel transition temperature (Tgel) and rheological measurements, and single-crystal X-ray diffraction was used to analyze the solid-state interactions of the gelators. The morphologies of the dried gels were analyzed by scanning electron microscopy (SEM), which revealed that the structural modification did not induce any prominent effect on the gel morphology. The stimuli-responsive behavior of these gels in the presence of salts in DMSO/water was evaluated by rheological experiments, which indicated that the modified compounds displayed enhanced gel strength in most cases. However, the gel network collapsed in the presence of the chloride salts of aluminum(III), zinc(II), copper(II), and cadmium(II). The mechanical strength of the parent gels decreased in the presence of salts, indicating that the structural modification resulted in robust gels in most cases. The modified compounds formed gels below minimum gel concentration in the presence of various salts, indicating salt-induced gelation. These results show the making and breaking ability of the gel network in the presence of external stimuli (salts), which explains the potential of using LMWGs based on N-oxide moieties as stimuli-responsive materials.
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Zhao B, Hammond GB, Xu B. Aromatic Ketone-Catalyzed Photochemical Synthesis of Imidazo-isoquinolinone Derivatives. J Org Chem 2021; 86:12851-12861. [PMID: 34436893 DOI: 10.1021/acs.joc.1c01486] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have developed an efficient photocatalytic decarboxylative radical addition/cyclization strategy to synthesize imidazo-isoquinolinone derivatives using inexpensive aromatic ketone photocatalysts. This method not only tolerates a wide range of functional groups but also works well for both alkyl and aryl radicals.
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Affiliation(s)
- Bin Zhao
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bo Xu
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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Das S, Roy S. 6-acylamino nicotinic acid-based hydrogelators applicable in phase selective gelation, reproducible mat formation and toxic dye removal. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01234-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Ghosh D, Bjornsson R, Damodaran KK. Role of N-Oxide Moieties in Tuning Supramolecular Gel-State Properties. Gels 2020; 6:gels6040041. [PMID: 33233596 PMCID: PMC7709621 DOI: 10.3390/gels6040041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022] Open
Abstract
The role of specific interactions in the self-assembly process of low molecular weight gelators (LMWGs) was studied by altering the nonbonding interactions responsible for gel formation via structural modification of the gelator/nongelator. This was achieved by modifying pyridyl moieties of bis(pyridyl) urea-based hydrogelator (4–BPU) and the isomer (3–BPU) to pyridyl N–oxide compounds (L1 and L2, respectively). The modification of the functional groups resulted in the tuning of the gelation properties of the parent gelator, which induced/enhanced the gelation properties. The modified compounds displayed better mechanical and thermal stabilities and the introduction of the N–oxide moieties had a prominent effect on the morphologies of the gel network, which was evident from the scanning electron microscopy (SEM) images. The effect of various interactions due to the introduction of N–oxide moieties in the gel network formation was analyzed by comparing the solid-state interactions of the compounds using single crystal X-ray diffraction and computational studies, which were correlated with the enhanced gelation properties. This study shows the importance of specific nonbonding interactions and the spatial arrangement of the functional groups in the supramolecular gel network formation.
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Affiliation(s)
- Dipankar Ghosh
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland;
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max–Planck–Institut für Chemische Energiekonversion, Campus de Stiftstrasse 34–36, 45470 Mülheim an der Ruhr, Germany;
| | - Krishna K. Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland;
- Correspondence: ; Fax: +354-552-8911
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Deng T, Wu S, Wu Y, Hu S, Bao H, Huang XA, Xu Q, Yang Z, Song J, Liu F. An unexpected Griess reaction on the important anti-malarial drug primaquine and its application for drug determination. J Pharm Biomed Anal 2019; 171:8-14. [DOI: 10.1016/j.jpba.2019.03.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 10/27/2022]
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7
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Parveen R, Jayamma B, Dastidar P. Supramolecular Gels Derived from Simple Organic Salts of Flufenamic Acid: Design, Synthesis, Structures, and Plausible Biomedical Application. ACS Biomater Sci Eng 2019; 5:2180-2189. [PMID: 33405770 DOI: 10.1021/acsbiomaterials.9b00153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Following supramolecular synthon rationale in the context of crystal engineering, a nonsteroidal-anti-inflammatory-drug (NSAID), namely flufenamic acid (FA) and its β-alanine monopeptide derivative (FM), were converted to a series of primary ammonium monocarboxylate (PAM) salts. Majority of the PAM salts (∼90%) showed gelation with various solvents including water and methyl salicylate (important solvents in topical gel formulation). Structure-property correlation studies based on single-crystal X-ray diffraction (SXRD) and powder X-ray diffraction (PXRD) data provided intriguing insights into the structure of the gel network. Furthermore, one of the gelator salts (S7) displayed anticancer activity on a highly aggressive human breast cancer cell line (MDA-MB-231) ,as revealed by MTT, PEG2, and cell migration assays.
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Affiliation(s)
- Rumana Parveen
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Kolkata 700032,West Bengal, India
| | - Bandi Jayamma
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Kolkata 700032,West Bengal, India
| | - Parthasarathi Dastidar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Kolkata 700032,West Bengal, India
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8
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Noura S, Ghorbani M, Zolfigol MA, Narimani M, Yarie M, Oftadeh M. Biological based (nano) gelatoric ionic liquids (NGILs): Application as catalysts in the synthesis of a substituted pyrazole via vinylogous anomeric based oxidation. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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9
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Chen F, Wang YM, Guo W, Yin XB. Color-tunable lanthanide metal-organic framework gels. Chem Sci 2018; 10:1644-1650. [PMID: 30842827 PMCID: PMC6369438 DOI: 10.1039/c8sc04732d] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
MOF gels with intrinsic emission color are prepared with 5-boronoisophthalic acid and Eu3+, Tb3+, and/or Dy3+. Single-metal gels exhibit trichromatic fluorescence, so full color emissions are readily obtained by tuning the type and/or ratio of Ln3+ ions to prepare mixed-metal gels. Nano-ribbons form from the precursors and then entangle together to generate the gels.
Fluorescence significantly improves the performance of gels. Various strategies, such as embedment and crosslinking, have been used to integrate extrinsic luminophores into gel systems, but the procedures are usually complex. Herein, for the first time, we report gels with intrinsic and tunable emission color prepared with 5-boronoisophthalic acid (5-bop) and Eu3+, Tb3+, and/or Dy3+ similar to the procedure for the preparation of metal–organic frameworks (MOFs). The single-metal gels exhibit intrinsic trichromatic fluorescence, due to which full-color emissions are readily obtained by tuning the type and/or ratio of Ln3+ ions to prepare mixed-metal gels. The emission is governed by an antenna effect and is thus excited with single-wavelength at 275 nm. The nucleation-growth mechanism reveals that the Ln3+ ions and 5-bop produce separated layers, which then grow anisotropically to form nanoribbons by high coordinated valence of Ln3+ ions and biased carboxyl distribution as well as steric hindrance and hydrogen bonds of the boric acid group in 5-bop. The nanoribbons entangle together to generate chemical-physical hybrid gels. To the best of our knowledge, this is the first example of gels with inherent and tunable emission color. Due to their optical and viscoelastic properties, the gels have numerous potential applications such as tunable emission and multi-target detection.
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Affiliation(s)
- Fei Chen
- State Key Laboratory of Medicinal Chemical Biology , Tianjin Key Laboratory of Biosensing and Molecular Recognition , College of Chemistry , Nankai University , Tianjin , 300071 , China .
| | - Yong-Mei Wang
- State Key Laboratory of Medicinal Chemical Biology , Tianjin Key Laboratory of Biosensing and Molecular Recognition , College of Chemistry , Nankai University , Tianjin , 300071 , China .
| | - Weiwei Guo
- State Key Laboratory of Medicinal Chemical Biology , Tianjin Key Laboratory of Biosensing and Molecular Recognition , College of Chemistry , Nankai University , Tianjin , 300071 , China .
| | - Xue-Bo Yin
- State Key Laboratory of Medicinal Chemical Biology , Tianjin Key Laboratory of Biosensing and Molecular Recognition , College of Chemistry , Nankai University , Tianjin , 300071 , China . .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin , 300071 , China
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10
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Synthesis of albumin capped gold nanoparticles and their direct attachment on glassy carbon electrode for the determination of nitrite ion. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.09.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Nitric Oxide Detection Using Electrochemical Third-generation Biosensors - Based on Heme Proteins and Porphyrins. ELECTROANAL 2018. [DOI: 10.1002/elan.201800421] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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12
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Chakraborty P, Dastidar P. Exploring Orthogonal Hydrogen Bonding towards Designing Organic-Salt-Based Supramolecular Gelators: Synthesis, Structures, and Anticancer Properties. Chem Asian J 2018; 13:1366-1378. [PMID: 29578316 DOI: 10.1002/asia.201800317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Indexed: 12/12/2022]
Abstract
A series of primary ammonium monocarboxylate (PAM) salts derived from β-alanine derivatives of pyrene and naphthalene acetic acid, along with the parent acids, were explored to probe the plausible role of orthogonal hydrogen bonding resulting from amide⋅⋅⋅amide and PAM synthons on gelation. Single-crystal X-ray diffraction (SXRD) studies were performed on two parent acids and five PAM salts in the series. The data revealed that orthogonal hydrogen bonding played an important role in gelation. Structure-property correlation based on SXRD and powder X-ray diffraction data also supported the working hypothesis upon which these gelators were designed. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and cell migration assay on a highly aggressive human breast cancer cell line, MDA-MB-231, revealed that one of the PAM salts in the series, namely, PAA.B2, displayed anticancer properties, and internalization of the gelator salt in the same cell line was confirmed by cell imaging.
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Affiliation(s)
- Poulami Chakraborty
- Department of Organic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S.C. Mullick Road, Jadavpur, Kolkata-, 700032, West Bengal, India
| | - Parthasarathi Dastidar
- Department of Organic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S.C. Mullick Road, Jadavpur, Kolkata-, 700032, West Bengal, India
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13
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Gahlaut A, Hooda V, Gothwal A, Hooda V. Enzyme-Based Ultrasensitive Electrochemical Biosensors for Rapid Assessment of Nitrite Toxicity: Recent Advances and Perspectives. Crit Rev Anal Chem 2018; 49:32-43. [PMID: 29757672 DOI: 10.1080/10408347.2018.1461551] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In the present era of rapid international globalization and industrialization, intensive use of nitrite as a fertilizing agent in agriculture, preservative, dyeing agent, food additive and as corrosion inhibitor in industrial sectors is adversely effecting environment, natural habitats and human health. The issue of toxicity and carcinogenicity due to excessive ingestion of nitrites via the dietary intake has led to an imminent need for its efficient real-time monitoring in situ. Nitrite detection employing electrochemical biosensors has been gaining high credibility in the field of clinical research. Nitrite biosensors have emerged as an outstanding choice for portable point of care testing of nitrite quantification owing to the excellent properties, such as rapidity, miniaturization, ultra-low limits of detection, multiplexing and enhanced detection sensitivity. The article is enclosed with an interesting outlook on latest emerging trends in the development of nitrite biosensors utilizing nanomaterials, such as metal nanoparticles, carbon nanotubes, metal oxide nanoparticles, nanocomposites, polymers and biomaterials. The present review embarks on the highlights relevant to the nitrite quantification in real samples, then proceeds with a meticulous description of the most pertinent electrochemical nitrite biosensors, which have been proposed by adopting diverse materials and strategies of fabrication and finally end with the achievements and future outlook signifying the application of these nanoengineered biosensors for environmental surveillance and human safety.
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Affiliation(s)
- Anjum Gahlaut
- a Centre for Biotechnology, Maharshi Dayanand University , Rohtak , Haryana , India
| | - Vinita Hooda
- a Centre for Biotechnology, Maharshi Dayanand University , Rohtak , Haryana , India
| | - Ashish Gothwal
- a Centre for Biotechnology, Maharshi Dayanand University , Rohtak , Haryana , India
| | - Vikas Hooda
- a Centre for Biotechnology, Maharshi Dayanand University , Rohtak , Haryana , India
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14
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Zhang XX, Song YZ, Fang F, Wu ZY. Sensitive paper-based analytical device for fast colorimetric detection of nitrite with smartphone. Anal Bioanal Chem 2018; 410:2665-2669. [PMID: 29556736 DOI: 10.1007/s00216-018-0965-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 02/05/2018] [Accepted: 02/14/2018] [Indexed: 01/08/2023]
Abstract
On-site rapid monitoring of nitrite as an assessment indicator of the environment, food, and physiological systems has drawn extensive attention. Here, electrokinetic stacking (ES) was combined with colorimetric reaction on a paper-based device (PAD) to achieve colorless nitrite detection with smartphone. In this paper, nitrite was stacked on the paper fluidic channel as a narrow band by electrokinetic stacking. Then, Griess reagent was introduced to visualize the stacking band. Under optimal conditions, the sensitivity of nitrite was 160-fold increased within 5 min. A linear response in the range of 0.075 to 1.0 μg mL-1 (R2 = 0.99) and a limit of detection (LOD) of 73 ng mL-1 (0.86 μM) were obtained. The LOD was 10 times lower than the reported PAD, and close to that achieved by a desktop spectrophotometer. The applicability was demonstrated by nitrite detection from saliva and water with good selectivity, adding 100 times more concentrated co-ions. High recovery (91.0~108.7%) and reasonable intra-day and inter-day reproducibility (RSD < 9%) were obtained. This work shows that the sensitivity of colorless analyte detection-based colorimetric reaction can be effectively enhanced by integration of ES on a PAD. Graphical abstract Schematic of the experimental setups (left) and the corresponding images (right) of the actual portable device.
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Affiliation(s)
- Xiu-Xiu Zhang
- Research Center for Analytical Sciences, Chemistry Department College of Sciences, Northeastern University, Shenyang, Liaoning, 110819, China
| | - Yi-Zhen Song
- Research Center for Analytical Sciences, Chemistry Department College of Sciences, Northeastern University, Shenyang, Liaoning, 110819, China
| | - Fang Fang
- Research Center for Analytical Sciences, Chemistry Department College of Sciences, Northeastern University, Shenyang, Liaoning, 110819, China
| | - Zhi-Yong Wu
- Research Center for Analytical Sciences, Chemistry Department College of Sciences, Northeastern University, Shenyang, Liaoning, 110819, China.
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15
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Okesola BO, Smith DK. Applying low-molecular weight supramolecular gelators in an environmental setting - self-assembled gels as smart materials for pollutant removal. Chem Soc Rev 2018; 45:4226-51. [PMID: 27241027 DOI: 10.1039/c6cs00124f] [Citation(s) in RCA: 475] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review explores supramolecular gels as materials for environmental remediation. These soft materials are formed by self-assembling low-molecular-weight building blocks, which can be programmed with molecular-scale information by simple organic synthesis. The resulting gels often have nanoscale 'solid-like' networks which are sample-spanning within a 'liquid-like' solvent phase. There is intimate contact between the solvent and the gel nanostructure, which has a very high effective surface area as a result of its dimensions. As such, these materials have the ability to bring a solid-like phase into contact with liquids in an environmental setting. Such materials can therefore remediate unwanted pollutants from the environment including: immobilisation of oil spills, removal of dyes, extraction of heavy metals or toxic anions, and the detection or removal of chemical weapons. Controlling the interactions between the gel nanofibres and pollutants can lead to selective uptake and extraction. Furthermore, if suitably designed, such materials can be recyclable and environmentally benign, while the responsive and tunable nature of the self-assembled network offers significant advantages over other materials solutions to problems caused by pollution in an environmental setting.
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Affiliation(s)
- Babatunde O Okesola
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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Li D, Ma Y, Duan H, Deng W, Li D. Griess reaction-based paper strip for colorimetric/fluorescent/SERS triple sensing of nitrite. Biosens Bioelectron 2018; 99:389-398. [DOI: 10.1016/j.bios.2017.08.008] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/01/2017] [Accepted: 08/07/2017] [Indexed: 11/28/2022]
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17
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Singh N, Patel K, Nayak JM, Yadav J, Sahoo SK, Kumar R. A New Methodology for Detection and Assessment of Nitric Oxide in Biological Samples. ChemistrySelect 2017. [DOI: 10.1002/slct.201701720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nimisha Singh
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
| | - Khushbu Patel
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
| | - Jyotsna M. Nayak
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
| | - Jyoti Yadav
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
| | - Suban K. Sahoo
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
| | - Rajender Kumar
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat 395007 India
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Hashemnejad SM, Kundu S. Probing Gelation and Rheological Behavior of a Self-Assembled Molecular Gel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7769-7779. [PMID: 28715639 DOI: 10.1021/acs.langmuir.7b01531] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Molecular gels have been investigated over the last few decades; however, mechanical behavior of these self-assembled gels is not well understood, particularly how these materials fail at large strain. Here, we report the gelation and rheological behavior of a molecular gel formed by self-assembly of a low molecular weight gelator (LMWG), di-Fmoc-l-lysine, in 1-propanol/water mixture. Gels were prepared by solvent-triggered technique, and gelation was tracked using Fourier transform infrared (FTIR) spectroscopy and shear rheology. FTIR spectroscopy captures the formation of hydrogen bonding between the gelator molecules, and the change in IR spectra during the gelation process correlates with the gelation kinetics results captured by rheology. Self-assembly of gelator molecules leads to a fiber-like structure, and these long fibers topologically interact to form a gel-like material. Stretched-exponential function can capture the stress-relaxation data. Stress-relaxation time for these gels have been found to be long owing to long fiber dimensions, and the stretching exponent value of 1/3 indicates polydispersity in fiber dimensions. Cavitation rheology captures fracture-like behavior of these gels, and critical energy release rate has been estimated to be of the order 0.1 J/m2. Our results provide new understanding of the rheological behavior of molecular gels and their structural origin.
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Affiliation(s)
- Seyed Meysam Hashemnejad
- Dave C. Swalm School of Chemical Engineering, Mississippi State University , Mississippi State, Mississippi 39762, United States
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, Mississippi State University , Mississippi State, Mississippi 39762, United States
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Xiao T, Zhang X, Wu J, Yang J, Yang Y. Aliphatic-Alcohol-Induced Opaque-to-Transparent Transformation and Application of Solubility Theory in a Bis-Dipeptide-Based Supramolecular Gel. Chempluschem 2017; 82:879-887. [PMID: 31961561 DOI: 10.1002/cplu.201700206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 12/20/2022]
Abstract
A bis-dipeptide supramolecular gelator (DMPV) is prepared, based on l-valine moieties having a pyridinyl group and a long fatty diamine. It is found that the gelator can immobilize organic/water binary mixed solvents, and gel-to-gel transitions with unprecedented opaque-to-transparent transformations are observed upon using aliphatic alcohols such as methanol, ethanol, 1-propyl alcohol, and isopropanol as the organic components. Morphological investigations indicate that a reassembly process occurs, and microstructure evolutions from agglomerates to nanofibers are observed. Opaque and transparent assemblies can interconvert, and respond and restore under mechanical force and pH stimuli. Moreover, Hansen and Flory-Huggins parameters are used to investigate the effect of the solvent on the gelation performance of DMPV. This may facilitate the structure and solvent optimizations and aid the development of advanced gel systems.
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Affiliation(s)
- Tingting Xiao
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Xiaoyang Zhang
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Jingyu Wu
- NARI Group Corporation, State Grid electric Power Research Institute, Nanjing, 211106, P. R. China
| | - Jiazhi Yang
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Yong Yang
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
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Parveen R, Sravanthi B, Dastidar P. Rationally Developed Organic Salts of Tolfenamic Acid and Its β-Alanine Derivatives for Dual Purposes as an Anti-Inflammatory Topical Gel and Anticancer Agent. Chem Asian J 2017; 12:792-803. [PMID: 28150904 DOI: 10.1002/asia.201700049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 01/31/2017] [Indexed: 12/15/2022]
Abstract
A new series of primary ammonium monocarboxylate (PAM) salts of a nonsteroidal anti-inflammatory drug (NSAID), namely, tolfenamic acid (TA), and its β-alanine derivatives were generated. Nearly 67 % of the salts in the series showed gelling abilities with various solvents, including water (biogenic solvent) and methyl salicylate (typically used for topical gel formulations). Gels were characterized by rheology, electron microscopy, and so forth. Structure-property correlations based on single-crystal and powder XRD data of several gelator and nongelator salts revealed intriguing insights. Studies (in vitro) on an aggressive human breast cancer cell line (MDA-MB-231) with the l-tyrosine methyl ester salt of TA (S7) revealed that the hydrogelator salt was more effective at killing cancer cells than the mother drug TA (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay); displayed better anti-inflammatory activity compared with that of TA (prostaglandin E2 assay); could be internalized within the cancer cells, as revealed by fluorescence microscopy; and inhibited effectively migration of the cancer cells. Thus, the easily accessible ambidextrous gelator salt S7 can be used for two purposes: as an anti-inflammatory topical gel and as an anticancer agent.
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Affiliation(s)
- Rumana Parveen
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India), Fax: (+91) 33-2473-2805
| | - Bommagani Sravanthi
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India), Fax: (+91) 33-2473-2805
| | - Parthasarathi Dastidar
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India), Fax: (+91) 33-2473-2805
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21
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Fabregat V, Burguete MI, Galindo F, Luis SV. Influence of polymer composition on the sensitivity towards nitrite and nitric oxide of colorimetric disposable test strips. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3448-3455. [PMID: 27873112 DOI: 10.1007/s11356-016-8068-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 11/07/2016] [Indexed: 06/06/2023]
Abstract
The influence of polymer composition on the sensitivity towards nitrite (NO2-) and nitric oxide (NO) of a series of 19 polymeric hydrogel films has been studied. The polymers, based on the hydrophilic monomer 2-hydroxyethylmethacrylate (HEMA), are able to encapsulate the colorimetric indicator 1,2-diaminoanthraquinone (DAQ) and to respond to NO2- and NO by visual changes. In the case of nitrite, the calculated limits of detection (LOD) for two of the polymeric sensors (10 μM) are very close to the sensitivity estimated for free DAQ in solution (LOD 5 μM), but with the advantage of a solid supported sensor with the format of a disposable test-strip made with affordable starting chemicals. The results are interpreted taking into account the nature and proportions of monomers and cross-linkers used for the synthesis of polymers. Key factors for obtaining sensitive materials are the hydrophilic character of the film along with the utilization of low levels of cross-linker and the use of an acidic monomer, like acrylic acid, as a building block.
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Affiliation(s)
- Víctor Fabregat
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat, s/n, E-12071, Castellón, Spain
| | - M Isabel Burguete
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat, s/n, E-12071, Castellón, Spain
| | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat, s/n, E-12071, Castellón, Spain.
| | - Santiago V Luis
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Av. Sos Baynat, s/n, E-12071, Castellón, Spain.
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22
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Zhao Y, Xu H, Mu B, Xu L, Yang Y. Biodegradable soy protein films with controllable water solubility and enhanced mechanical properties via graft polymerization. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Veits GK, Carter KK, Cox SJ, McNeil AJ. Developing a Gel-Based Sensor Using Crystal Morphology Prediction. J Am Chem Soc 2016; 138:12228-33. [DOI: 10.1021/jacs.6b06269] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gesine K. Veits
- Department of Chemistry and
Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Kelsey K. Carter
- Department of Chemistry and
Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Sarah J. Cox
- Department of Chemistry and
Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Anne J. McNeil
- Department of Chemistry and
Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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24
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Peroxynitrous-acid-induced chemiluminescence detection of nitrite based on Microfluidic chip. Talanta 2016; 154:73-9. [DOI: 10.1016/j.talanta.2016.03.062] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/14/2016] [Accepted: 03/19/2016] [Indexed: 01/09/2023]
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25
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Parveen R, Dastidar P. Supramolecular Gels by Design: Towards the Development of Topical Gels for Self-Delivery Application. Chemistry 2016; 22:9257-66. [PMID: 27226393 DOI: 10.1002/chem.201600105] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Indexed: 01/18/2023]
Abstract
Following a supramolecular synthon approach, simple salt formation has been employed to gain access to a series of supramolecular gelators derived from the well-known non-steroidal anti-inflammatory drug (NSAID) ibuprofen. A well-studied gel-inducing supramolecular synthon, namely primary ammonium monocarboxylate (PAM), has been exploited to generate a series of PAM salts by reacting ibuprofen with various primary amines. Remarkably, all of the salts (S1-S7) thus synthesized proved to be good to moderate gelators of various polar and nonpolar solvents. Single-crystal and powder X-ray diffraction studies established the existence of the PAM synthons in the gel network, confirming the efficacy of the supramolecular synthon approach employed. Most importantly, the majority of the salts (S2, S3, S6, and S7) were capable of gelling methyl salicylate (MS), an important ingredient found in many commercial topical gels. In vitro experiments (MTT and PGE2 assays) revealed that all of the salts (except S3 and S7) were biocompatible (up to 0.5 mm concentration), and the most suited one, S6, displayed anti-inflammatory ability as good as that of the parent drug ibuprofen. A topical gel of S6 with methyl salicylate and menthol was found to be suitable for delivering the gelator drug in a self-delivery fashion in treating skin inflammation in mice. Histological studies, including immunohistology, were performed to further probe the role of the gelator drug S6 in treating inflammation. Cell imaging studies supported cellular uptake of the gelator drug in such biomedical application.
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Affiliation(s)
- Rumana Parveen
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Parthasarathi Dastidar
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India.
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26
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McNeil AJ. My maize and blue brick road to physical organic chemistry in materials. Beilstein J Org Chem 2016; 12:229-38. [PMID: 26977181 PMCID: PMC4778497 DOI: 10.3762/bjoc.12.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/01/2016] [Indexed: 11/23/2022] Open
Abstract
Similar to Dorothy’s journey along the yellow brick road in The Wizard of Oz, this perspective carves out the path I took from my early childhood fascinations with science through my independent career at the University of Michigan (maize and blue). The influential research projects and mentors are highlighted, including some fortuitous experimental results that drew me into the field of supramolecular chemistry, specifically, and organic materials, broadly. My research group’s efforts toward designing new sensors based on small molecule gelators are described. In particular, I highlight how our design strategy has evolved as we learn more about molecular gelators. This perspective concludes with some predictions about where molecular gels, as well as my personal and professional life, are headed.
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Affiliation(s)
- Anne J McNeil
- Department of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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27
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Du X, Zhou J, Shi J, Xu B. Supramolecular Hydrogelators and Hydrogels: From Soft Matter to Molecular Biomaterials. Chem Rev 2015; 115:13165-307. [PMID: 26646318 PMCID: PMC4936198 DOI: 10.1021/acs.chemrev.5b00299] [Citation(s) in RCA: 1258] [Impact Index Per Article: 139.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 12/19/2022]
Abstract
In this review we intend to provide a relatively comprehensive summary of the work of supramolecular hydrogelators after 2004 and to put emphasis particularly on the applications of supramolecular hydrogels/hydrogelators as molecular biomaterials. After a brief introduction of methods for generating supramolecular hydrogels, we discuss supramolecular hydrogelators on the basis of their categories, such as small organic molecules, coordination complexes, peptides, nucleobases, and saccharides. Following molecular design, we focus on various potential applications of supramolecular hydrogels as molecular biomaterials, classified by their applications in cell cultures, tissue engineering, cell behavior, imaging, and unique applications of hydrogelators. Particularly, we discuss the applications of supramolecular hydrogelators after they form supramolecular assemblies but prior to reaching the critical gelation concentration because this subject is less explored but may hold equally great promise for helping address fundamental questions about the mechanisms or the consequences of the self-assembly of molecules, including low molecular weight ones. Finally, we provide a perspective on supramolecular hydrogelators. We hope that this review will serve as an updated introduction and reference for researchers who are interested in exploring supramolecular hydrogelators as molecular biomaterials for addressing the societal needs at various frontiers.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
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28
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Xue P, Yao B, Wang P, Gong P, Zhang Z, Lu R. Strong Fluorescent Smart Organogel as a Dual Sensing Material for Volatile Acid and Organic Amine Vapors. Chemistry 2015; 21:17508-15. [DOI: 10.1002/chem.201502401] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Indexed: 12/22/2022]
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30
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Parveen R, Dastidar P. Easy Access to Supramolecular Gels of the Nonsteroidal Anti-inflammatory Drug Diflunisal: Synthesis, Characterization, and Plausible Biomedical Applications. Chem Asian J 2015; 10:2427-36. [DOI: 10.1002/asia.201500732] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Indexed: 01/16/2023]
Affiliation(s)
- Rumana Parveen
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 2A & 2B Raja S.C. Mullick Road Kolkata- 700032 West Bengal India
| | - Parthasarathi Dastidar
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 2A & 2B Raja S.C. Mullick Road Kolkata- 700032 West Bengal India
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31
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Abstract
Small molecule gelators are serendipitously discovered more often than they are designed. As a consequence, it has been challenging to develop applications based on the limited set of known materials. This synopsis highlights recent strategies to streamline the process of gelator discovery, with a focus on the role of unidirectional intermolecular interactions and solvation. We present these strategies as a series of tools that can be employed to help identify gelator scaffolds and solvents for gel formation. Overall, we suggest that this guided approach is more efficient than random derivatization and screening.
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Affiliation(s)
- Danielle M Zurcher
- Department of Chemistry and Macromolecular Science and Engineering Program, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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32
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Chen G, Chen J, Liu Q, Ou C, Gao J. Enzymatic formation of a meta-stable supramolecular hydrogel for 3D cell culture. RSC Adv 2015. [DOI: 10.1039/c5ra02449h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A meta-stable supramolecular hydrogel triggered by phosphatase allows separation of cells post culture by simply pipetting and centrifugation.
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Affiliation(s)
- Guoqin Chen
- Cardiovascular Medicine Department of Central Hospital of Panyu District and Cardiovascular Institute of Panyu District
- Guangzhou 511400
- P. R. China
| | - Jiaxin Chen
- Experimental Medical Research Center
- Guangzhou Medical University
- Guangzhou 510182
- P. R. China
| | - Qicai Liu
- Experimental Medical Research Center
- Guangzhou Medical University
- Guangzhou 510182
- P. R. China
| | - Caiwen Ou
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou 510280
- P. R. China
| | - Jie Gao
- State Key Laboratory of Medicinal Chemical Biology
- Nankai University
- Tianjin 300071
- P. R. China
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33
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Wang S, Xue P, Wang P, Yao B. Emission enhanced two-component gels for the detection of organic amine vapors. NEW J CHEM 2015. [DOI: 10.1039/c5nj01168j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-component gelator with enhanced emission could be used to quantitatively detect and discriminate between aliphatic and aromatic organic amine vapors.
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Affiliation(s)
- Sisi Wang
- College of Chemistry
- Jilin University
- Changchun
- China
- Institute of Translational Medicine
| | | | - Panpan Wang
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Boqi Yao
- College of Chemistry
- Jilin University
- Changchun
- China
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34
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Paul M, Sarkar K, Dastidar P. Metallogels Derived from Silver Coordination Polymers ofC3-Symmetric Tris(pyridylamide) Tripodal Ligands: Synthesis of Ag Nanoparticles and Catalysis. Chemistry 2014; 21:255-68. [DOI: 10.1002/chem.201404959] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 11/09/2022]
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