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Radha R, Makhlouf Z, Diab R, Al-Sayah MH. Modifying cellulose fibres with carbon dots: a promising approach for the development of antimicrobial fibres. R Soc Open Sci 2024; 11:231755. [PMID: 38633350 PMCID: PMC11022000 DOI: 10.1098/rsos.231755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/27/2024] [Accepted: 02/27/2024] [Indexed: 04/19/2024]
Abstract
This study focuses on the development of antimicrobial fibres for use in medical and healthcare textile industries. Carbon dots (CDs) were designed with boronic acid groups for the attachment to cellulose fibres found in cotton textiles and to enhance their attachment to glycogens on bacterial surfaces. Boronic acid-based and curcumin-based CDs were prepared and characterized using various techniques, showing a nanoscale size and zeta potential values. The CDs inhibited the growth of both Staphylococcus epidermidis and Escherichia coli bacteria, with UV-activated CDs demonstrating improved antibacterial activity. The antimicrobial activity of the CDs was then tested, revealing strong adherence to cellulose paper fibres with no CD diffusion and potent inhibition of bacterial growth. Cytotoxicity assays on human cell lines showed no toxicity towards cells at concentrations of up to 100 µg ml-1 but exhibited increased toxicity at concentrations exceeding 1000 µg ml-1. However, CD-modified cellulose paper fibres showed no toxicity against human cell lines, highlighting the antimicrobial properties of the CD-modified cellulose fibres are safe for human use. These findings show promising potential for applications in both industrial and clinical settings.
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Affiliation(s)
- Remya Radha
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah26666, United Arab Emirates
| | - Zinb Makhlouf
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah26666, United Arab Emirates
| | - Rasha Diab
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah26666, United Arab Emirates
| | - Mohammad H. Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah26666, United Arab Emirates
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah26666, United Arab Emirates
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2
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Ali AA, Al-Sayah MH, Al-Othman A, Al-Nashash H. A Flexible Conductive Electrode Using Boronic-Acid Modified Carbon Dots. Annu Int Conf IEEE Eng Med Biol Soc 2023; 2023:1-6. [PMID: 38082587 DOI: 10.1109/embc40787.2023.10341162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Flexible electrodes are becoming a topic of interest for a range of applications including implantation. They can be used for neural signal recording and for electrical stimulation of atrophying muscles. Unlike the traditionally used metal electrodes that are harsh to the body's tissues, flexible electrodes conduct electricity while preserving the delicate tissues. Polydimethylsiloxane (PDMS), a non-conductive synthetic polymer characterized by its flexibility, low cost, biocompatibility, and durability during implantation, has been explored as a matrix for flexible electrodes. This study reports the synthesis of composite boronic acid-modified carbon dots (BA-CDs)/PDMS electrode materials. The performance of the composite electrode is evaluated electrochemically (for its conductivity and charge storage capacity) and mechanically (Young's modulus). Furthermore, the effect of increasing the PDMS crosslinking density on the electrode's performance is studied based on the hypothesis that a higher crosslinking will bring the BA-CDs closer together, thereby facilitating the movement of electrons. Results of this study showed that incorporating 10% BA-CDs dispersed with 16% glycerol in 74% PDMS with a higher crosslinking density resulted in a bulk impedance of 47.7 Ω and a conductivity of 2.68×10-3 S/cm, both of which surpassed that of the same composition with lower crosslinking. The synthesized flexible electrode material was capable of charge storage although the charge storage capacity (0.00365 mC/cm2) was lower than the safe limit for some tissue activation. Furthermore, the electrode maintained a modulus of elasticity (0.2322 MPa) that is compatible with biological soft tissues.Clinical Relevance- This study reports a conductive electrode that has a flexibility compatible with that of biological tissues for future purposes such as neural signal recording and tissue electrical stimulation (e.g. atrophying muscles). The reported BA-CD/PDMS electrode overcomes the limitations of the harsh metals previously used as implantable electrodes that harm the biological tissues due to their high rigidity.
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3
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Ali AA, Abuwatfa WH, Al-Sayah MH, Husseini GA. Gold-Nanoparticle Hybrid Nanostructures for Multimodal Cancer Therapy. Nanomaterials (Basel) 2022; 12:nano12203706. [PMID: 36296896 PMCID: PMC9608376 DOI: 10.3390/nano12203706] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/12/2022] [Accepted: 10/18/2022] [Indexed: 06/01/2023]
Abstract
With the urgent need for bio-nanomaterials to improve the currently available cancer treatments, gold nanoparticle (GNP) hybrid nanostructures are rapidly rising as promising multimodal candidates for cancer therapy. Gold nanoparticles (GNPs) have been hybridized with several nanocarriers, including liposomes and polymers, to achieve chemotherapy, photothermal therapy, radiotherapy, and imaging using a single composite. The GNP nanohybrids used for targeted chemotherapy can be designed to respond to external stimuli such as heat or internal stimuli such as intratumoral pH. Despite their promise for multimodal cancer therapy, there are currently no reviews summarizing the current status of GNP nanohybrid use for cancer theragnostics. Therefore, this review fulfills this gap in the literature by providing a critical analysis of the data available on the use of GNP nanohybrids for cancer treatment with a specific focus on synergistic approaches (i.e., triggered drug release, photothermal therapy, and radiotherapy). It also highlights some of the challenges that hinder the clinical translation of GNP hybrid nanostructures from bench to bedside. Future studies that could expedite the clinical progress of GNPs, as well as the future possibility of improving GNP nanohybrids for cancer theragnostics, are also summarized.
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Affiliation(s)
- Amaal Abdulraqeb Ali
- Biomedical Engineering Graduate Program, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
| | - Waad H. Abuwatfa
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
| | - Mohammad H. Al-Sayah
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
| | - Ghaleb A. Husseini
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
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4
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Ali AA, Al-Othman A, Al-Sayah MH. Multifunctional stimuli-responsive hybrid nanogels for cancer therapy: Current status and challenges. J Control Release 2022; 351:476-503. [PMID: 36170926 DOI: 10.1016/j.jconrel.2022.09.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/18/2022]
Abstract
With cancer research shifting focus to achieving multifunctionality in cancer treatment strategies, hybrid nanogels are making a rapid rise to the spotlight as novel, multifunctional, stimuli-responsive, and biocompatible cancer therapeutic strategies. They can possess cancer cell-specific cytotoxic effects themselves, carry drugs or enzymes that can produce cytotoxic effects, improve imaging modalities, and target tumor cells over normal cells. Hybrid nanogels bring together a wide range of desirable properties for cancer treatment such as stimuli-responsiveness, efficient loading and protection of molecules such as drugs or enzymes, and effective crossing of cellular barriers among other properties. Despite their promising abilities, hybrid nanogels are still far from being used in the clinic, and their available data remains relatively limited. However, many studies can be done to facilitate this clinical transition. This review is critically summarizing and analyzing the recent information and progress on the use of hybrid nanogels particularly inorganic nanoparticle-based and organic nanoparticle-based hybrid nanogels in the field of oncology and future directions to aid in transferring those results to the clinic. This work concludes that the future of hybrid nanogels is greatly impacted by therapeutic and non-therapeutic factors. Therapeutic factors include the lack of hemocompatibility studies, acute and chronic toxicological studies, and information on agglomeration capability and extent, tumor heterogeneity, interaction with proteins in physiological fluids, endocytosis-exocytosis, and toxicity of the nanogels' breakdown products. Non-therapeutic factors include the lack of clear regulatory guidelines and standardized assays, limitations of animal models, and difficulties associated with good manufacture practices (GMP).
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Affiliation(s)
- Amaal Abdulraqeb Ali
- Biomedical Engineering Graduate Program, American University of Sharjah, Sharjah, P.O. Box 26666, United Arab Emirates
| | - Amani Al-Othman
- Department of Chemical Engineering, American University of Sharjah, Sharjah, P.O. Box 26666, United Arab Emirates.
| | - Mohammad H Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, P.O. Box 26666, United Arab Emirates
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5
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AlSawaftah NM, Awad NS, Paul V, Kawak PS, Al-Sayah MH, Husseini GA. Transferrin-modified liposomes triggered with ultrasound to treat HeLa cells. Sci Rep 2021; 11:11589. [PMID: 34078930 PMCID: PMC8172941 DOI: 10.1038/s41598-021-90349-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 04/22/2021] [Indexed: 01/23/2023] Open
Abstract
Targeted liposomes are designed to target specific receptors overexpressed on the surfaces of cancer cells. This technique ensures site-specific drug delivery to reduce undesirable side effects while enhancing the efficiency of the encapsulated therapeutics. Upon reaching the tumor site, these liposomes can be triggered to release their content in a controlled manner using ultrasound (US). In this study, drug release from pegylated calcein-loaded liposomes modified with transferrin (Tf) and triggered with US was evaluated. Low-frequency ultrasound at 20-kHz using three different power densities (6.2 mW/cm2, 9 mW/cm2 and 10 mW/cm2) was found to increase calcein release. In addition, transferrin-conjugated pegylated liposomes (Tf-PEG liposomes) were found to be more sonosensitive compared to the non-targeted (control) liposomes. Calcein uptake by HeLa cells was found to be significantly higher with the Tf-PEG liposomes compared to the non-targeted control liposomes. This uptake was further enhanced following the exposure to low-frequency ultrasound (at 35 kHz). These findings show that targeted liposomes triggered with US have promising potential as a safe and effective drug delivery platform.
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Affiliation(s)
- Nour M AlSawaftah
- Department of Chemical Engineering, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Nahid S Awad
- Department of Chemical Engineering, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Vinod Paul
- Department of Chemical Engineering, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Paul S Kawak
- Department of Chemical Engineering, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Mohammad H Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Ghaleb A Husseini
- Department of Chemical Engineering, American University of Sharjah, PO. Box 26666, Sharjah, UAE.
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6
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Elamir A, Ajith S, Sawaftah NA, Abuwatfa W, Mukhopadhyay D, Paul V, Al-Sayah MH, Awad N, Husseini GA. Ultrasound-triggered herceptin liposomes for breast cancer therapy. Sci Rep 2021; 11:7545. [PMID: 33824356 PMCID: PMC8024284 DOI: 10.1038/s41598-021-86860-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/22/2021] [Indexed: 02/01/2023] Open
Abstract
The functionalization of liposomes with monoclonal antibodies is a potential strategy to increase the specificity of liposomes and reduce the side-effects associated with chemotherapeutic agents. The active targeting of the Human Epidermal growth factor Receptor 2 (HER2), which is overexpressed in HER2 positive breast cancer cells, can be achieved by coating liposomes with an anti-HER2 monoclonal antibody. In this study, we synthesized calcein and Doxorubicin-loaded immunoliposomes functionalized with the monoclonal antibody Trastuzumab (TRA). Both liposomes were characterized for their size, phospholipid content and antibody conjugation. Exposing the liposomes to low-frequency ultrasound (LFUS) triggered drug release which increased with the increase in power density. Trastuzumab conjugation resulted in enhancing the sensitivity of the liposomes to LFUS. Compared to the control liposomes, TRA-liposomes showed higher cellular toxicity and higher drug uptake by the HER2 + cell line (SKBR3) which was further improved following sonication with LFUS. Combining immunoliposomes with LFUS is a promising technique in the field of targeted drug delivery that can enhance efficiency and reduce the cytotoxicity of antineoplastic drugs.
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Affiliation(s)
- Amal Elamir
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Saniha Ajith
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Nour Al Sawaftah
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Waad Abuwatfa
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Debasmita Mukhopadhyay
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Vinod Paul
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Mohammad H. Al-Sayah
- grid.411365.40000 0001 2218 0143Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, PO. Box 26666, Sharjah, UAE
| | - Nahid Awad
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Ghaleb A. Husseini
- grid.411365.40000 0001 2218 0143Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
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7
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Ahmed SE, Moussa HG, Martins AM, Abbas Y, Al-Sayah MH, Husseini GA. Factors Affecting the Acoustic In Vitro Release of Calcein from PEGylated Liposomes. J Nanosci Nanotechnol 2019; 19:6899-6906. [PMID: 31039841 DOI: 10.1166/jnn.2019.16646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Typical methods used in cancer treatment, including chemotherapy, are debilitating because of the various adverse side effects experienced by cancer patients. The free drug injected into the patient at given doses affects both healthy and cancerous cells. Therefore, novel methods are being researched to ensure the selectivity of the treatment. The purpose of this study is to test the release of a model fluorescent drug, calcein, from echogenic stealth liposomes, triggered by lowfrequency pulsed ultrasound. Several experimental parameters related to the ultrasound (US) and the investigated liposomes were varied in order to examine their effect on the acoustic release. Upon analysis of experimental results, the study concluded that release can be maximized by optimizing the sonication frequency, power density, and US pulse duration. When a non-isothermal chamber is used to conduct the experiments, it is important to have longer 'Off' than 'On' US periods in order to avoid overheating the liposomes. Applying such pulsation pattern can also be utilized to achieve slower release rates, which safely meet the desired drug levels at the end of the session. Our study also concluded that optimizing the liposome concentration is vital to delivering desired drug doses. Additionally, the type of lipids used in the synthesis should be carefully selected to produce stable yet acoustically sensitive liposomes capable of releasing at desired rates.
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Affiliation(s)
- Salma E Ahmed
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
| | - Hesham G Moussa
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
| | - Ana M Martins
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
| | - Yassmine Abbas
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
| | - Mohammad H Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
| | - Ghaleb A Husseini
- Department of Chemical Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, UAE
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8
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Baghbanzadeh M, Belding L, Yuan L, Park J, Al-Sayah MH, Bowers CM, Whitesides GM. Dipole-Induced Rectification Across AgTS/SAM//Ga2O3/EGaIn Junctions. J Am Chem Soc 2019; 141:8969-8980. [DOI: 10.1021/jacs.9b02891] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mostafa Baghbanzadeh
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Lee Belding
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Li Yuan
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Junwoo Park
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Mohammad H. Al-Sayah
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, P.O. Box 26666, Sharjah, United Arab Emirates
| | - Carleen M. Bowers
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - George M. Whitesides
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
- Kavli Institute for Bionano Science and Technology, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, United States
- Wyss Institute of Biologically Inspired Engineering, Harvard University, 60 Oxford Street, Cambridge, Massachusetts 02138, United States
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9
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Awad NS, Paul V, Al-Sayah MH, Husseini GA. Ultrasonically controlled albumin-conjugated liposomes for breast cancer therapy. Artificial Cells, Nanomedicine, and Biotechnology 2019; 47:705-714. [DOI: 10.1080/21691401.2019.1573175] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Nahid S. Awad
- Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Vinod Paul
- Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | - Mohammad H. Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
- Biosciences and Bioengineering Research Institute, American University of Sharjah, Sharjah, UAE
| | - Ghaleb A. Husseini
- Department of Chemical Engineering, American University of Sharjah, Sharjah, UAE
- Biosciences and Bioengineering Research Institute, American University of Sharjah, Sharjah, UAE
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10
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El-Kadri OM, Tessema TD, Almotawa RM, Arvapally RK, Al-Sayah MH, Omary MA, El-Kaderi HM. Pyrene Bearing Azo-Functionalized Porous Nanofibers for CO 2 Separation and Toxic Metal Cation Sensing. ACS Omega 2018; 3:15510-15518. [PMID: 31458207 PMCID: PMC6644102 DOI: 10.1021/acsomega.8b01920] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 10/26/2018] [Indexed: 05/05/2023]
Abstract
A novel luminescent azo-linked polymer (ALP) has been constructed from 1,3,6,8-tetra(4-aminophenyl)pyrene using a copper(I)-catalyzed oxidative homocoupling reaction. The polymer displays high porosity with a Brunauer-Emmett-Teller surface area of 1259 m2 g-1 and narrow pore size distribution (1.06 nm) and is able to take up a significant amount of CO2 (2.89 mmol g-1) at 298 K and 1.00 bar with a high isosteric heat of adsorption of 27.5 kJ mol-1. Selectivity studies applying the ideal adsorbed solution theory revealed that the novel polymer has moderately good selectivities for CO2/N2 (55.1) and CO2/CH4 (10.9). Furthermore, the ALP shows fluorescence quenching in the presence of Hg2+, Pb2+, Tl+, and Al3+ ions. Compared with these ions, the ALP showed no sensitivity to light metal ions such as Na+, K+, and Ca2+ in ethanol-water solution, clearly indicating the high selectivity of the ALP toward heavy metal ions. The exceptional physiochemical stability, high porosity, and strong luminescence make this polymer an excellent candidate as a fluorescent chemical sensor for the detection of heavy metal ions.
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Affiliation(s)
- Oussama M. El-Kadri
- Department of Biology, Chemistry,
and Environmental Sciences, and Materials Science
and Engineering Research Institute, American
University of Sharjah, P.O. Box 26666, Sharjah, United Arab Emirates
- E-mail: . Phone +971 6 515-2787. Fax +971 6 515-2450 (O.M.E.-K.)
| | - Tsemre-Dingel Tessema
- Department
of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284-2006, United States
| | - Ruaa M. Almotawa
- Department
of Chemistry and Advanced Materials and Manufacturing Processes Institute
(AMMPI), University of North Texas, 1155 Union Circle #305070, Denton, Texas 76203, United States
| | - Ravi K. Arvapally
- Department
of Chemistry and Advanced Materials and Manufacturing Processes Institute
(AMMPI), University of North Texas, 1155 Union Circle #305070, Denton, Texas 76203, United States
| | - Mohammad H. Al-Sayah
- Department of Biology, Chemistry,
and Environmental Sciences, and Materials Science
and Engineering Research Institute, American
University of Sharjah, P.O. Box 26666, Sharjah, United Arab Emirates
| | - Mohammad A. Omary
- Department
of Chemistry and Advanced Materials and Manufacturing Processes Institute
(AMMPI), University of North Texas, 1155 Union Circle #305070, Denton, Texas 76203, United States
- Institute
of New Energy, Science
Hall, 1003 Shangbu Road, Shenzhen 518031, China
| | - Hani M. El-Kaderi
- Department
of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284-2006, United States
- E-mail: . Phone (804) 828-7505. Fax (804) 828-8599 (H.M.E.-K.)
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11
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Al-Sayah MH, Abdalla AM, Shehab MK. A dansyl-based optical probe for detection of singly and doubly charged anions. Supramol Chem 2016. [DOI: 10.1080/10610278.2015.1091456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Mohammad H. Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
| | - Aya M. Abdalla
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
| | - Mohammad K. Shehab
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
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12
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El-Assaad TH, Shiring SB, Getmanenko YA, Hallal KM, Brédas JL, Marder SR, Al-Sayah MH, Kaafarani BR. Dithieno[3,2-a:2′,3′-c]phenazine-based chemical probe for anions: a spectroscopic study of binding. RSC Adv 2015. [DOI: 10.1039/c5ra01416f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis and binding studies of N,N′-(2,5-bis(4-(tert-butyl)phenyl)dithieno[3,2-a:2′,3′-c]phenazine-9,10-diyl)bis(4-methylbenzenesulfonamide) (1) are reported.
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Affiliation(s)
- Tarek H. El-Assaad
- Department of Chemistry
- American University of Beirut
- Beirut 1107-2020
- Lebanon
| | - Stephen B. Shiring
- School of Chemistry & Biochemistry
- Center for Organic Photonics and Electronics
- Georgia Institute of Technology
- Atlanta
- USA
| | - Yulia A. Getmanenko
- School of Chemistry & Biochemistry
- Center for Organic Photonics and Electronics
- Georgia Institute of Technology
- Atlanta
- USA
| | - Kassem M. Hallal
- Department of Chemistry
- American University of Beirut
- Beirut 1107-2020
- Lebanon
| | - Jean-Luc Brédas
- Solar & Photovoltaics Engineering Research Center
- King Abdullah University of Science & Technology
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Seth R. Marder
- School of Chemistry & Biochemistry
- Center for Organic Photonics and Electronics
- Georgia Institute of Technology
- Atlanta
- USA
| | - Mohammad H. Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences
- American University of Sharjah
- Sharjah
- United Arab Emirates
| | - Bilal R. Kaafarani
- Department of Chemistry
- American University of Beirut
- Beirut 1107-2020
- Lebanon
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13
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Jradi FM, El-Ballouli AO, Al-Sayah MH, Kaafarani BR. Synthesis and binding investigations of novel crown-ether derivatives of phenanthro[4,5-abc]phenazine and quinoxalino[2′,3′:9,10]phenanthro[4,5-abc]phenazine. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.817577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fadi M. Jradi
- Department of Chemistry, American University of Beirut, Beirut, 1107-2020, Lebanon
| | - Ala'a O. El-Ballouli
- Department of Chemistry, American University of Beirut, Beirut, 1107-2020, Lebanon
| | - Mohammad H. Al-Sayah
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, P.O. Box: 26666, Sharjah, United Arab Emirates
| | - Bilal R. Kaafarani
- Department of Chemistry, American University of Beirut, Beirut, 1107-2020, Lebanon
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14
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El-Ballouli AO, Zhang Y, Barlow S, Marder SR, Al-Sayah MH, Kaafarani BR. Fluorescent detection of anions by dibenzophenazine-based sensors. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.121] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Raad FS, El-Ballouli AO, Moustafa RM, Al-Sayah MH, Kaafarani BR. Novel quinoxalinophenanthrophenazine-based molecules as sensors for anions: synthesis and binding investigations. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.02.075] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
[reaction: see text] The protonation of alkylamines in two novel receptors results in intramolecular host-guest associations between the resulting ammonium ions and crown ether macrocycles. These interactions result in conformational changes of the receptors and prevent them from acting as hydrogen bond complements for uracil and carboxylate guest species.
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Affiliation(s)
- Mohammad H Al-Sayah
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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