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Kumar S, Chatterjee N, Misra SK. Suitably Incorporated Hydrophobic, Redox-Active Drug in Poly Lactic Acid-Graphene Nanoplatelet Composite Generates 3D-Printed Medicinal Patch for Electrostimulatory Therapeutics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11858-11872. [PMID: 38801374 DOI: 10.1021/acs.langmuir.3c03338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Polymer carbon composites have been reported for improved mechanical, thermal and electrical properties to provide reduced side effect by 3D printing personalized biomedical drug delivery devices. But control on homogeneity in loading and release of dopants like carbon allotropes and drugs, respectively, in the bulk and on the surface has always been a challenge. Herein, we are reporting a methodological cascade to achieve a model, customizable, 3D printed, homogeneously layered and electrically stimulatory, PLA-Graphene nanoplatelet (hl-PLGR) based drug delivery device, called 3D-est-MediPatch. The medicinal patch has been prepared by 3D-printing a Nic-hl-PLGR composite obtained by incorporating a redox active model drug, niclosamide (Nic) in hl-PLGR. The composite of Nic-hl-PLGR was characterized in three sequentially complex forms─composite film, hot melt extruded (HME) filament, and 3D printed (3DP) patches to understand the effect of filament extrusion and 3D-printing processes on Nic-hl-PLGR composite and overall drug incorporation efficiency and control. The incorporation of graphene was found to improve the homogeneity of the drug, and the hot melt extrusion improved the dispersion of drug and graphene fillers in the composite. The electroresponsive drug release from the Nic-hl-PLGR composite was found to be controllably accelerated compared to the drug release by diffusion, in simulated buffer condition. The released drug concentration was found to reach within the IC50 range for malignant melanoma cell (A375) and showed in vitro selectively, with reduced effects in noncancerous, fibroblast cells (NIH3T3). Further, the feasibility of application for this system was assessed in generating personalized 3D-est-MediPatch for skin, liver and spleen tissues in ex-vivo scenario. It showed excellent feasibility and efficacy of the 3D-est-MediPatch in controlled and personalized release of drugs during electrostimulation. Thus, a model platform, 3D-est-MediPatch, could be achieved by suitably incorporating a hydrophobic, redox-active drug (niclosamide) in poly lactic acid-graphene nanoplatelet composite for electrostimulatory therapeutics with reduced side effects.
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Affiliation(s)
- Sandarbh Kumar
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India
| | - Niranjan Chatterjee
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India
| | - Santosh Kumar Misra
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India
- Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, 208016, India
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Biswakarma D, Dey N, Bhattacharya S. Hydrogel Nanocomposite Towards Optical Sensing of Spermine in Biomedical and Real-Life Food Samples and Remediation of Toxic Dyes from Wastewater. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11610-11620. [PMID: 37605815 DOI: 10.1021/acs.langmuir.3c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Nanocomposites such as graphene oxide (GO) have been incorporated into hydrogels to enhance conventional hydrogels' properties and develop new functions. Unique and strong molecular interactions between GO and low molecular weight gelators allow the fabrication of various functional hydrogels suitable for different applications. In the present study, we report a stable and soft nanocomposite hydrogel comprising a pyrene-based chiral amphipath having an amino acid (l-phenylalanine) core with pendant oligo-oxyethylene hydrophilic chains and GO. The mechanical and viscoelastic properties of the nanocomposite hydrogel were thoroughly studied using various spectroscopic, microscopic, and mechanical techniques. Even without GO, native hydrogels could form a self-supported thermoreversible and thixotropic hydrogel composed of the fibrillar network. Unlike native hydrogels, the morphological investigation of nanocomposite gels shows the presence of cross-linked nanosheet-like structures. The combined effect of π-π stacking and H-bonding interactions is the driving force for the formation of such composite hydrogels. Moreover, the nanocomposite hydrogels possess significantly superior mechanical stiffness than the native hydrogels. Interestingly, the thixotropic properties observed with the parent gel were retained even in the presence of carbon nanomaterials (GO). The nanocomposite hydrogel could be employed in the optical sensing of a biogenic polyamine, spermine, resulting in a visible gel-to-sol transition. The superior electrostatic interaction between the GOs and spermine molecules might have led to the release of entrapped fluorogenic dyes from the hydrogel network and a turn-on emission response. The sensory system was employed to analyze spermine content in human urine samples and decomposed food items. A gel-coated paper strip was also developed for onsite detection of the spermine. The nanocomposite hydrogel was further utilized to remove toxic organic dyes such as methylene blue (MB) and rhodamine B (RhB) from the aqueous media. The nanocomposite hydrogel thus showed excellent dye removal capabilities and was also found to be recyclable. Calculations of different mechanical parameters suggest that the dye removal efficiency of the nanocomposite hydrogel was better for MB than for RhB.
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Affiliation(s)
- Dipen Biswakarma
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Sciences-Pilani, Hyderabad, Telangana 700078, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Indian Institute of Science Education and Research, Tirupati, Andhra Pradesh 517507, India
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Choudhury P, Dinda S, Kumar Das P. Fabrication of soft-nanocomposites from functional molecules with diversified applications. SOFT MATTER 2020; 16:27-53. [PMID: 31693041 DOI: 10.1039/c9sm01304k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
With the increasing demand for new soft materials having excellent physical and biological characteristics and functionality, the design of hybrid materials offers a simple, yet versatile platform for the development of materials with specific and tunable properties. By definition a "soft-nanocomposite" is the combination of supramolecular self-assemblies with nanomaterials of different origins (inorganic/metallic nanoparticles and carbonaceous allotropes like carbon nanotubes and graphene) through covalent/non-covalent interactions. Dynamic supramolecular self-assemblies can serve as excellent hosts for the incorporation of these dimensionally different nanomaterials. Nanomaterials within the matrix of supramolecular self-assemblies can give rise to new characteristics due to the synergistic contribution of both materials. Although the very initial work intended to use molecular gels as media for the preparation and stabilization of nanoparticles, recent reports have suggested that amalgamation of different supramolecular self-assemblies with nanoparticles is advantageous for both constituents. These newly developed soft-nanocomposites have interesting properties including electrical conductivity, viscoelasticity, thermal robustness, magnetic, phase-selective, redox and near-infrared radiation sensitive properties and so on. This review will focus on some of the most recent advancements in the development of novel soft-nanocomposites. In particular, we intend to correlate various design strategies for synthesis as well as composite preparation from functional molecules with interesting applications in the area of supercapacitors, nanoelectronics, photovoltaic devices, chemical and biosensors, biomedicine and so on. We expect that this article will be a general and conceptual demonstration of various approaches to develop different soft-nanocomposites and will highlight their applications across disciplines.
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Affiliation(s)
- Pritam Choudhury
- School of Biological Sciences, Indian Association for the Cultivation of Science Jadavpur, Kolkata-700 032, India.
| | - Soumik Dinda
- School of Biological Sciences, Indian Association for the Cultivation of Science Jadavpur, Kolkata-700 032, India.
| | - Prasanta Kumar Das
- School of Biological Sciences, Indian Association for the Cultivation of Science Jadavpur, Kolkata-700 032, India.
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4
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Graphene quantum dots nanoparticles changed the rheological properties of hydrophilic gels (carbopol). J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.110949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Kousar A, Feng C. Controlled mechanical properties and supramolecular chirality of hydrogels via pH change. MethodsX 2019; 6:417-423. [PMID: 30899678 PMCID: PMC6406592 DOI: 10.1016/j.mex.2019.02.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 02/17/2019] [Indexed: 12/23/2022] Open
Abstract
In order to widen the use of soft materials in tissue engineering and life sciences, hydrogels with improved mechanical properties and controlled chirality are critical to achieve. A methodology is presented to enhance the mechanical properties and gain the control of chirality of two component hydrogels by merely varying the solution pH. pH change has been used as a way to ionize the specific functionalities into positive and negative charges. These positive and negative charges are crucial to provide a surge of electrostatic interactions to the components, imparting the improvement in stability and regulating their optical activity. Our goal is to throw light on the significance of opposite charges in the hydrogels for achievement of desired properties. •Role of ionisable groups is crucial to control viscoelastic and optical properties of supramolecular hydrogels.•Increasing the pH of the solution increases the number of negative ions by affecting the ionisable moieties, which interact with the positive charges in the solution.•Zeta potential of both materials has been analysed to ensure the presence of charged species.
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Affiliation(s)
- Ayesha Kousar
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, Dongchuan Rd 800, 200240, Shanghai, China
| | - Chuanliang Feng
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, Dongchuan Rd 800, 200240, Shanghai, China
- Henan Univ, Collaborat Innovat Ctr Nano Funct Mat & Applicat, Key Lab Special Funct Mat, Kaifeng 475004, China
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Maiti B, Bhattacharjee S, Bhattacharya S. Palladium-induced transformation of nematic liquid crystals to robust metallogel comprising self-assembled nanowires. Chem Commun (Camb) 2019; 55:12651-12654. [DOI: 10.1039/c9cc05517g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Transformation of nematic liquid crystals to metallogels.
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Affiliation(s)
- Bappa Maiti
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
- School of Applied & Interdisciplinary Sciences
| | | | - Santanu Bhattacharya
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
- School of Applied & Interdisciplinary Sciences
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7
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Tómasson DA, Ghosh D, Kržišnik Z, Fasolin LH, Vicente AA, Martin AD, Thordarson P, Damodaran KK. Enhanced Mechanical and Thermal Strength in Mixed-Enantiomers-Based Supramolecular Gel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12957-12967. [PMID: 30272986 DOI: 10.1021/acs.langmuir.8b02729] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mixing supramolecular gels based on enantiomers leads to re-arrangement of gel fibers at the molecular level, which results in more favorable packing and tunable properties. Bis(urea) compounds tagged with a phenylalanine methyl ester in racemic and enantiopure forms were synthesized. Both enantiopure and racemate compounds formed gels in a wide range of solvents and the racemate (1-rac) formed a stronger gel network compared with the enantiomers. The gel (1R+1S) obtained by mixing equimolar amount of enantiomers (1R and 1S) showed enhanced mechanical and thermal stability compared to enantiomers and racemate gels. The preservation of chirality in these compounds was analyzed by circular dichroism and optical rotation measurements. Analysis of the scanning electron microscopy (SEM) and atomic force microscopy (AFM) images revealed that the network in the mixed gel is a combination of enantiomers and racemate fibers, which was further supported by solid-state NMR. The analysis of the packing in xerogels by solid-state NMR spectra and the existence of twisted-tape morphology in SEM and AFM images confirmed the presence of both self-sorted and co-assembled fibers in mixed gel. The enhanced thermal and mechanical strength may be attributed to the enhanced intermolecular forces between the racemate and the enantiomer and the combination of both self-sorted and co-assembled enantiomers in the mixed gel.
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Affiliation(s)
- Daníel Arnar Tómasson
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Dipankar Ghosh
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Zala Kržišnik
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Luiz Henrique Fasolin
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - António A Vicente
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - Adam D Martin
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
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8
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Gao Y, Hao J, Yan Q, Du F, Ju Y, Hu J. Natural Triterpenoid-Tailored Phosphate: In Situ Reduction of Heavy Metals Spontaneously to Generate Electrochemical Hybrid Gels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17352-17358. [PMID: 29722960 DOI: 10.1021/acsami.8b03569] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, we reported a biocompatible nature product-based soft material which could convert heavy metals to nanoparticles (NPs) in situ spontaneously in a simple step. We have designed and synthesized a natural triterpenoid-tailored phosphate (methyl glycyrrhetate phosphate (MGP)), and this amphiphilic MGP could form the stable hydrogel and extract gold salt from water, followed by spontaneous in situ AuNP formation without external reductants. Notably, the AuNPs were mainly localized on nanofibers instead of gel cavities, and the resulting MGP-AuNPs hybrid gel exhibited attractive electrocatalytic and conductive properties. In addition, as an efficient leaching extraction agent, MGP hydrogel showed higher affinity toward heavy metals over other common metals on account of the high reduction potential of heavy metals. Our work not only provides a novel yet simple way in generating electrochemical hybrid gels by in situ reduction of heavy metals spontaneously but also expands the application of nature product-based functional materials.
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Affiliation(s)
- Yuxia Gao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , China
| | - Jie Hao
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Qiang Yan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Fengpei Du
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , China
| | - Yong Ju
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Jun Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
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9
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Tukimin N, Abdullah J, Sulaiman Y. Development of a PrGO-Modified Electrode for Uric Acid Determination in the Presence of Ascorbic Acid by an Electrochemical Technique. SENSORS (BASEL, SWITZERLAND) 2017; 17:E1539. [PMID: 28671562 PMCID: PMC5539542 DOI: 10.3390/s17071539] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 11/16/2022]
Abstract
An attractive electrochemical sensor of poly(3,4-ethylenedioxythiophene)/reduced graphene oxide electrode (PrGO) was developed for an electrochemical technique for uric acid (UA) detection in the presence of ascorbic acid (AA). PrGO composite film showed an improved electrocatalytic activity towards UA oxidation in pH 6.0 (0.1 M PBS). The PrGO composite exhibited a high current signal and low charge transfer resistance (Rct) compared to a reduced graphene oxide (rGO) electrode or a bare glassy carbon electrode (GCE). The limit of detection and sensitivity of PrGO for the detection of UA are 0.19 μM (S/N = 3) and 0.01 μA/μM, respectively, in the range of 1-300 μM of UA.
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Affiliation(s)
- Nurulkhalilah Tukimin
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia.
| | - Jaafar Abdullah
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia.
- Institute of Advanced Technology (ITMA), Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia.
| | - Yusran Sulaiman
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia.
- Institute of Advanced Technology (ITMA), Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia.
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10
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Vedhanarayanan B, Babu B, Shaijumon MM, Ajayaghosh A. Exfoliation of Reduced Graphene Oxide with Self-Assembled π-Gelators for Improved Electrochemical Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19417-19426. [PMID: 27726323 DOI: 10.1021/acsami.6b09418] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Among several methodologies to improve the solution processing of graphene-based materials, noncovalent functionalization has been considered as the simplest and nondestructive method. Herein, we show that molecular self-assembly process can be used as a useful tool to exfoliate reduced graphene oxide (RGO), resulting in hybrid materials with improved physical properties. Upon interacting with a π-gelator, the dispersing ability of the RGO increased significantly in most of nonpolar and polar aprotic solvents when compared to the bare one. The amount of RGO dispersed was 1.7-1.8 mg mL-1 in solvents such as toluene, o-dichlorobenzene (ODCB) and tetrahydrofuran (THF). Morphological studies revealed that aggregation of π-gelator over RGO helps to exfoliate graphene layers to remain as individual sheets with higher surface area. Experimental studies revealed enhanced surface area (250 m2 g-1) and better conductivity (3.7 S m-1) of the hybrid materials with 30% of RGO content resulting in excellent electrochemical performance (specific capacitance of 181 F g-1) as electrodes for supercapacitors.
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Affiliation(s)
| | - Binson Babu
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram , CET Campus, Sreekaryam, Thiruvananthapuram 695 016, India
| | - Manikoth M Shaijumon
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram , CET Campus, Sreekaryam, Thiruvananthapuram 695 016, India
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Nair VS, Mukhopadhyay RD, Saeki A, Seki S, Ajayaghosh A. A π-gel scaffold for assembling fullerene to photoconducting supramolecular rods. SCIENCE ADVANCES 2016; 2:e1600142. [PMID: 27679815 PMCID: PMC5035126 DOI: 10.1126/sciadv.1600142] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 08/17/2016] [Indexed: 05/11/2023]
Abstract
Nonequilibrium self-assembly of molecules holds a huge prospect as a tool for obtaining new-generation materials for future applications. Crystallization of neutral molecules within a supramolecular gel matrix is one example in which two nonequilibrium processes occur orthogonal to each other. On the other hand, electronically interacting donor-acceptor two-component systems are expected to form phase-miscible hybrid systems. Contrary to the expectation, we report the behavior of a π-gel, derived from oligo(p-phenylenevinylene), OPVA, as a scaffold for the phase separation and crystallization of fullerene (C60) to supramolecular rods with increased transient photoconductivity (φƩμmax = 2.4 × 10-4 cm2 V-1 s-1). The C60 supramolecular rods in the π-gel medium exhibited high photocurrent in comparison to C60 loaded in a non-π-gel medium. This finding provides an opportunity for large-scale preparation of micrometer-sized photoconducting rods of fullerenes for device application.
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Affiliation(s)
- Vishnu Sukumaran Nair
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research–National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India
| | - Rahul Dev Mukhopadhyay
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research–National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ayyappanpillai Ajayaghosh
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research–National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India
- Corresponding author.
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Bhattacharya S, Samanta SK. Soft-Nanocomposites of Nanoparticles and Nanocarbons with Supramolecular and Polymer Gels and Their Applications. Chem Rev 2016; 116:11967-12028. [DOI: 10.1021/acs.chemrev.6b00221] [Citation(s) in RCA: 219] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Santanu Bhattacharya
- Department
of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
- Director’s
Research Unit, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Suman K. Samanta
- Director’s
Research Unit, Indian Association for the Cultivation of Science, Kolkata 700032, India
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13
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Choudhury P, Mandal D, Brahmachari S, Das PK. Hydrophobic End-Modulated Amino-Acid-Based Neutral Hydrogelators: Structure-Specific Inclusion of Carbon Nanomaterials. Chemistry 2016; 22:5160-72. [DOI: 10.1002/chem.201504888] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Pritam Choudhury
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Deep Mandal
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Sayanti Brahmachari
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Prasanta Kumar Das
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
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14
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Mandal SK, Mandal D, Das PK. Synthesis of a Low-Molecular-Weight Fluorescent Ambidextrous Gelator: Development of Graphene- and Graphene-Oxide-Included Gel Nanocomposites. Chempluschem 2015; 81:213-221. [DOI: 10.1002/cplu.201500457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Subhra Kanti Mandal
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Deep Mandal
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
| | - Prasanta Kumar Das
- Department of Biological Chemistry; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700032 India
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15
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Okesola BO, Suravaram SK, Parkin A, Smith DK. Selective Extraction and In Situ Reduction of Precious Metal Salts from Model Waste To Generate Hybrid Gels with Embedded Electrocatalytic Nanoparticles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507684] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Okesola BO, Suravaram SK, Parkin A, Smith DK. Selective Extraction and In Situ Reduction of Precious Metal Salts from Model Waste To Generate Hybrid Gels with Embedded Electrocatalytic Nanoparticles. Angew Chem Int Ed Engl 2015; 55:183-7. [PMID: 26549625 DOI: 10.1002/anie.201507684] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/13/2015] [Indexed: 11/08/2022]
Abstract
A hydrogel based on 1,3:2,4-dibenzylidenesorbitol (DBS), modified with acyl hydrazides which extracts gold/silver salts from model waste is reported, with preferential uptake of precious heavy metals over other common metals. Reduction of gold/silver salts occurs spontaneously in the gel to yield metal nanoparticles located on the gel nanofibers. High nanoparticle loadings can be achieved, endowing the gel with electrochemical activity. These hybrid gels exhibit higher conductances than gels doped with carbon nanotubes, and can be used to modify electrode surfaces, enhancing electrocatalysis. We reason this simple, industrially and environmentally relevant approach to conducting materials is of considerable significance.
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Affiliation(s)
- Babatunde O Okesola
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK)
| | - Sindhu K Suravaram
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK)
| | - Alison Parkin
- 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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Datta S, Bhattacharya S. Multifarious facets of sugar-derived molecular gels: molecular features, mechanisms of self-assembly and emerging applications. Chem Soc Rev 2015; 44:5596-637. [PMID: 26023922 DOI: 10.1039/c5cs00093a] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The remarkable capability of nature to design and create excellent self-assembled nano-structures, especially in the biological world, has motivated chemists to mimic such systems with synthetic molecular and supramolecular systems. The hierarchically organized self-assembly of low molecular weight gelators (LMWGs) based on non-covalent interactions has been proven to be a useful tool in the development of well-defined nanostructures. Among these, the self-assembly of sugar-derived LMWGs has received immense attention because of their propensity to furnish biocompatible, hierarchical, supramolecular architectures that are macroscopically expressed in gel formation. This review sheds light on various aspects of sugar-derived LMWGs, uncovering their mechanisms of gelation, structural analysis, and tailorable properties, and their diverse applications such as stimuli-responsiveness, sensing, self-healing, environmental problems, and nano and biomaterials synthesis.
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Affiliation(s)
- Sougata Datta
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India.
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18
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Cayuela A, Kennedy SR, Soriano ML, Jones CD, Valcárcel M, Steed JW. Fluorescent carbon dot-molecular salt hydrogels. Chem Sci 2015; 6:6139-6146. [PMID: 30090229 PMCID: PMC6055089 DOI: 10.1039/c5sc01859e] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 07/29/2015] [Indexed: 11/21/2022] Open
Abstract
We report the incorporation of functionalised carbon nanodots within a low molecular weight salt hydrogel enhancing the gelation and fluorescence properties of both the gel and carbon nanomaterial.
The incorporation of functionalised carbon nanodots within a novel low molecular weight salt hydrogel derived from 5-aminosalicylic acid is reported. The carbon dots result in markedly enhanced gelation properties, while inclusion within the hydrophobic gel results in a dramatic fluorescence enhancement for the carbon nanomaterials. The resulting hybrid CD gels exhibit a useful sensor response for heavy metal ions, particularly Pb2+.
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Affiliation(s)
- Angelina Cayuela
- Department of Analytical Chemistry , Marie Curie Building , Campus de Rabanales , University of Córdoba , E-14071 Córdoba , Spain . ; Tel: +34 957 218616
| | - Stuart R Kennedy
- Department of Chemistry , University of Durham , South Road , DH1 3LE , UK . ; ; Tel: +44 (0)191 334 2085
| | - M Laura Soriano
- Department of Analytical Chemistry , Marie Curie Building , Campus de Rabanales , University of Córdoba , E-14071 Córdoba , Spain . ; Tel: +34 957 218616
| | - Christopher D Jones
- Department of Chemistry , University of Durham , South Road , DH1 3LE , UK . ; ; Tel: +44 (0)191 334 2085
| | - Miguel Valcárcel
- Department of Analytical Chemistry , Marie Curie Building , Campus de Rabanales , University of Córdoba , E-14071 Córdoba , Spain . ; Tel: +34 957 218616
| | - Jonathan W Steed
- Department of Chemistry , University of Durham , South Road , DH1 3LE , UK . ; ; Tel: +44 (0)191 334 2085
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19
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Biswas A, Banerjee A. Sunlight induced unique morphological transformation in graphene based nanohybrids: appearance of a new tetra-nanohybrid and tuning of functional property of these nanohybrids. SOFT MATTER 2015; 11:4226-4234. [PMID: 25892272 DOI: 10.1039/c5sm00359h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, sunlight was used for in situ preparation of gel-based various nanohybrid systems. A naturally occurring amino acid, l-phenylalanine derivative formed a hydrogel with graphene oxide (GO)/reduced graphene oxide (rGO) at physiological pH. This hydrogel was then used in the presence of silver ions and diffuse sunlight to form initially a tri-nanohybrid system consisting of six atom silver nanoclusters, nanosheets, and nanofibers. Interestingly, a time-dependent morphological transformation occurs in this nanohybrid system to form one tri-nanohybrid to another tri-nanohybrid with the appearance of a novel, nanoscopic intermediate tetra-nanohybrid system consisting of four distinctly different nanomaterials (nanofibers, nanosheets, nanospheres, and nanoparticles). UV-Vis and fluorescence spectroscopic analyses, transmission electron microscopic, X-ray photo electron spectroscopic and MALDI-TOF mass spectral analyses with time were applied to characterise these morphological transformations in gel based nanohybrids. Time-dependent X-ray photo electron spectroscopic (XPS) analysis was used to uncover the mechanism for the transformation of silver nanoclusters to silver nanoparticles in the hydrogel matrix. Sunlight was used to trigger time-dependent structural transformation in the nanohybrid systems. Interestingly, one of these tri-nanohybrid systems (silver nanoparticles containing rGO based hydrogel) shows a catalytic property of reducing nitroarenes to aminoarenes and the catalytic efficiency can be modulated by changing the size of the silver nanoparticles with time in diffuse sunlight. The mechanism for different catalytic activities for different hybrids with varying size of silver nanoparticles has also been deciphered.
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Affiliation(s)
- Abhijit Biswas
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
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20
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Kuwahara RY, Yamagishi H, Hashimoto K, Tamesue S, Yamauchi T, Tsubokawa N. Easy preparation and characterization of conducting polymer-low molecular weight organogel system. POLYMER 2015. [DOI: 10.1016/j.polymer.2014.12.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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21
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Bhattacharjee S, Samanta SK, Moitra P, Pramoda K, Kumar R, Bhattacharya S, Rao CNR. Nanocomposite Made of an Oligo(p-phenylenevinylene)-Based Trihybrid Thixotropic Metallo(organo)gel Comprising Nanoscale Metal-Organic Particles, Carbon Nanohorns, and Silver Nanoparticles. Chemistry 2015; 21:5467-76. [DOI: 10.1002/chem.201405522] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Indexed: 01/23/2023]
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22
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Yadav P, Ballabh A. Odd–even effect in a thiazole based organogelator: understanding the interplay of non-covalent interactions on property and applications. NEW J CHEM 2015. [DOI: 10.1039/c4nj01247j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effects of systematic change in the alkyl chain appended to the thiazole moiety on supramolecular gelation and nanoparticle synthesis were investigated.
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Affiliation(s)
- Priyanka Yadav
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadodara 390002
- India
| | - Amar Ballabh
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadodara 390002
- India
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23
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Dallavalle M, Leonzio M, Calvaresi M, Zerbetto F. Explaining Fullerene Dispersion by using Micellar Solutions. Chemphyschem 2014; 15:2998-3005. [DOI: 10.1002/cphc.201402282] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Indexed: 11/11/2022]
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24
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Maji B, Samanta SK, Bhattacharya S. Role of pH controlled DNA secondary structures in the reversible dispersion/precipitation and separation of metallic and semiconducting single-walled carbon nanotubes. NANOSCALE 2014; 6:3721-3730. [PMID: 24569668 DOI: 10.1039/c3nr05045a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Single-stranded DNA (ss-DNA) oligomers (dA20, d[(C3TA2)3C3] or dT20) are able to disperse single-walled carbon nanotubes (SWNTs) in water at pH 7 through non-covalent wrapping on the nanotube surface. At lower pH, an alteration of the DNA secondary structure leads to precipitation of the SWNTs from the dispersion. The structural change of dA20 takes place from the single-stranded to the A-motif form at pH 3.5 while in case of d[(C3TA2)3C3] the change occurs from the single-stranded to the i-motif form at pH 5. Due to this structural change, the DNA is no longer able to bind the nanotube and hence the SWNT precipitates from its well-dispersed state. However, this could be reversed on restoring the pH to 7, where the DNA again relaxes in the single-stranded form. In this way the dispersion and precipitation process could be repeated over and over again. Variable temperature UV-Vis-NIR and CD spectroscopy studies showed that the DNA-SWNT complexes were thermally stable even at ∼90 °C at pH 7. Broadband NIR laser (1064 nm) irradiation also demonstrated the stability of the DNA-SWNT complex against local heating introduced through excitation of the carbon nanotubes. Electrophoretic mobility shift assay confirmed the formation of a stable DNA-SWNT complex at pH 7 and also the generation of DNA secondary structures (A/i-motif) upon acidification. The interactions of ss-DNA with SWNTs cause debundling of the nanotubes from its assembly. Selective affinity of the semiconducting SWNTs towards DNA than the metallic ones enables separation of the two as evident from spectroscopic as well as electrical conductivity studies.
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Affiliation(s)
- Basudeb Maji
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
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25
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Babu SS, Praveen VK, Ajayaghosh A. Functional π-gelators and their applications. Chem Rev 2014; 114:1973-2129. [PMID: 24400783 DOI: 10.1021/cr400195e] [Citation(s) in RCA: 1251] [Impact Index Per Article: 125.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sukumaran Santhosh Babu
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Trivandrum 695019, India
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Foster JA, Edkins RM, Cameron GJ, Colgin N, Fucke K, Ridgeway S, Crawford AG, Marder TB, Beeby A, Cobb SL, Steed JW. Blending gelators to tune gel structure and probe anion-induced disassembly. Chemistry 2014; 20:279-91. [PMID: 24302604 PMCID: PMC3994942 DOI: 10.1002/chem.201303153] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Indexed: 11/08/2022]
Abstract
Blending different low molecular weight gelators (LMWGs) provides a convenient route to tune the properties of a gel and incorporate functionalities such as fluorescence. Blending a series of gelators having a common bis-urea motif, and functionalised with different amino acid-derived end-groups and differing length alkylene spacers is reported. Fluorescent gelators incorporating 1- and 2-pyrenyl moieties provide a probe of the mixed systems alongside structural and morphological data from powder diffraction and electron microscopy. Characterisation of the individual gelators reveals that although the expected α-urea tape motif is preserved, there is considerable variation in the gelation properties, molecular packing, fibre morphology and rheological behaviour. Mixing of the gelators revealed examples in which: 1) the gels formed separate, orthogonal networks maintaining their own packing and morphology, 2) the gels blended together into a single network, either adopting the packing and morphology of one gelator, or 3) a new structure not seen for either of the gelators individually was created. The strong binding of the urea functionalities to anions was exploited as a means of breaking down the gel structure, and the use of fluorescent gel blends provides new insights into anion-mediated gel dissolution.
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Affiliation(s)
- Jonathan A Foster
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Robert M Edkins
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Gary J Cameron
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Neil Colgin
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Katharina Fucke
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Sam Ridgeway
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Andrew G Crawford
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Todd B Marder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg97074 Würzburg (Germany)
| | - Andrew Beeby
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Steven L Cobb
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
| | - Jonathan W Steed
- Department of Chemistry, University of DurhamSouth Road, Durham, DH1 3LE (UK)
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Roy S, Maiti DK, Panigrahi S, Basak D, Banerjee A. A bolaamphiphilic amino acid appended photo-switching supramolecular gel and tuning of photo-switching behaviour. Phys Chem Chem Phys 2014; 16:6041-9. [DOI: 10.1039/c3cp55108c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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28
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Kar T, Mukherjee S, Das PK. Organogelation through self-assembly of low-molecular-mass amphiphilic peptide. NEW J CHEM 2014. [DOI: 10.1039/c3nj01437a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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29
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Wang Q, Xiao X, Hu Y, Wang H, Yang Y. Reinforcement of phenylalanine-based supramolecular hydrogels by hybridizing poly(N-isopropylacrylamide) nanogels. RSC Adv 2014. [DOI: 10.1039/c4ra03357d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
TEAB self-assembled into a 3D network structure and nanogels were hybridized within the system, resulting in reinforced hybridized hydrogels.
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Affiliation(s)
- Qin Wang
- Key Laboratory for Large-format Battery Materials and Systems
- Ministry of Education
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Xiao Xiao
- Key Laboratory for Large-format Battery Materials and Systems
- Ministry of Education
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Yuandu Hu
- Key Laboratory for Large-format Battery Materials and Systems
- Ministry of Education
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Hong Wang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Yajiang Yang
- Key Laboratory for Large-format Battery Materials and Systems
- Ministry of Education
- Huazhong University of Science and Technology
- Wuhan 430074, China
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30
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Mandal D, Kar T, Das PK. Pyrene-Based Fluorescent Ambidextrous Gelators: Scaffolds for Mechanically Robust SWNT-Gel Nanocomposites. Chemistry 2013; 20:1349-58. [DOI: 10.1002/chem.201303401] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 11/07/2013] [Indexed: 12/23/2022]
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31
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Zhang W, Du D, Gunaratne D, Colby R, Lin Y, Laskin J. Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid. ELECTROANAL 2013. [DOI: 10.1002/elan.201300343] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Bhattacharjee S, Datta S, Bhattacharya S. Remarkable Regioisomer Control in the Hydrogel Formation from a Two‐Component Mixture of Pyridine‐End Oligo(
p
‐phenylenevinylene)s and
N
‐Decanoyl‐
L
‐alanine. Chemistry 2013; 19:16672-81. [DOI: 10.1002/chem.201302100] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/09/2013] [Indexed: 12/24/2022]
Affiliation(s)
- Subham Bhattacharjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560012 (India), Fax: (+91) 80‐23600529
| | - Sougata Datta
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560012 (India), Fax: (+91) 80‐23600529
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560012 (India), Fax: (+91) 80‐23600529
- Honorary Professor, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, Jakkur 560064 (India)
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33
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Roy S, Baral A, Banerjee A. An Amino-Acid-Based Self-Healing Hydrogel: Modulation of the Self-Healing Properties by Incorporating Carbon-Based Nanomaterials. Chemistry 2013; 19:14950-7. [DOI: 10.1002/chem.201301655] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Indexed: 12/22/2022]
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Efficient management of fruit pests by pheromone nanogels. Sci Rep 2013; 3:1294. [PMID: 23416455 PMCID: PMC3575019 DOI: 10.1038/srep01294] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 01/25/2013] [Indexed: 11/09/2022] Open
Abstract
Environment-friendly management of fruit flies involving pheromones is useful in reducing the undesirable pest populations responsible for decreasing the yield and the crop quality. A nanogel has been prepared from a pheromone, methyl eugenol (ME) using a low-molecular mass gelator. This was very stable at open ambient conditions and slowed down the evaporation of pheromone significantly. This enabled its easy handling and transportation without refrigeration, and reduction in the frequency of pheromone recharging in the orchard. Notably the involvement of the nano-gelled pheromone brought about an effective management of Bactrocera dorsalis, a prevalent harmful pest for a number of fruits including guava. Thus a simple, practical and low cost green chemical approach is developed that has a significant potential for crop protection, long lasting residual activity, excellent efficacy and favorable safety profiles. This makes the present invention well-suited for pest management in a variety of crops.
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35
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Malicka JM, Sandeep A, Monti F, Bandini E, Gazzano M, Ranjith C, Praveen VK, Ajayaghosh A, Armaroli N. Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures. Chemistry 2013; 19:12991-3001. [DOI: 10.1002/chem.201301539] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Indexed: 01/01/2023]
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36
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Datta S, Samanta SK, Bhattacharya S. Induction of Supramolecular Chirality in the Self-Assemblies of Lipophilic Pyrimidine Derivatives by Choice of the Amino Acid-Based Chiral Spacer. Chemistry 2013; 19:11364-73. [DOI: 10.1002/chem.201300605] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Indexed: 11/11/2022]
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37
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Brunetti FG, Isla H, Aragó J, Ortí E, Pérez EM, Martín N. Exploiting Multivalent Nanoparticles for the Supramolecular Functionalization of Graphene with a Nonplanar Recognition Motif. Chemistry 2013; 19:9843-8. [DOI: 10.1002/chem.201301102] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Indexed: 11/11/2022]
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38
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Nanda J, Biswas A, Adhikari B, Banerjee A. A Gel‐Based Trihybrid System Containing Nanofibers, Nanosheets, and Nanoparticles: Modulation of the Rheological Property and Catalysis. Angew Chem Int Ed Engl 2013; 52:5041-5. [DOI: 10.1002/anie.201301128] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Jayanta Nanda
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
| | - Abhijit Biswas
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
| | - Bimalendu Adhikari
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
| | - Arindam Banerjee
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
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Nanda J, Biswas A, Adhikari B, Banerjee A. A Gel-Based Trihybrid System Containing Nanofibers, Nanosheets, and Nanoparticles: Modulation of the Rheological Property and Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301128] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Rodríguez-Pérez L, Herranz MÁ, Martín N. The chemistry of pristine graphene. Chem Commun (Camb) 2013; 49:3721-35. [PMID: 23539514 DOI: 10.1039/c3cc38950b] [Citation(s) in RCA: 199] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Graphene is a unique material with outstanding mechanical and electronic properties. For solution processes graphene layers have to be stabilized by means of molecular or supramolecular chemical derivatization, prior to their transfer to solid substrates. The most common chemical methodology for the preparation of graphene involves the formation of graphene oxide under highly oxidizing conditions, which even after reduction, lacks the electronic quality of pristine graphene. Presently, there is increasing concern in the chemical community about the starting material quality, and recent efforts are directed to wet chemical approaches toward high-quality graphene flakes which encompass the use of graphite as initial material. In addition, epitaxial growth of graphene on metallic surfaces is becoming a powerful technique for the production of pristine graphene with a control on its electronic properties, somehow due to the supramolecular interaction with the metallic surface. Current approaches for the preparation of modified pristine graphene are the aim of this review.
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Affiliation(s)
- Laura Rodríguez-Pérez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
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41
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Samanta SK, Bhattacharya S. Excellent chirality transcription in two-component photochromic organogels assembled through J-aggregation. Chem Commun (Camb) 2013; 49:1425-7. [DOI: 10.1039/c2cc38221k] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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43
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Bhattacharya S, Samanta SK. Unusual Salt-Induced Color Modulation through Aggregation-Induced Emission Switching of a Bis-cationic Phenylenedivinylene-Based π Hydrogelator. Chemistry 2012. [DOI: 10.1002/chem.201201940] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Samanta SK, Bhattacharya S. Wide-Range Light-Harvesting Donor-Acceptor Assemblies through Specific Intergelator Interactions via Self-Assembly. Chemistry 2012; 18:15875-85. [DOI: 10.1002/chem.201103855] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 07/13/2012] [Indexed: 11/10/2022]
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45
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Samanta SK, Bhattacharya S. Aggregation induced emission switching and electrical properties of chain length dependent π-gels derived from phenylenedivinylene bis-pyridinium salts in alcohol–water mixtures. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35012b] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Matte HSSR, Jain A, George SJ. A covalently linked graphene-oligo(phenylenevinylene) adduct: self-organization and photo-physical properties. RSC Adv 2012. [DOI: 10.1039/c2ra20455j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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