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Liu X, Tang L, Xu L, Zhou G, Liu Q, Song M, Ma C, Lu Z, Yan Y. A temperature-sensitive modified imprinted Ag-Poly (o-phenylenediamine) photocatalyst synthesized by microwave method for efficient degradation of ciprofloxacin. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-022-02208-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Singh N, Riaz U. Recent trends on synthetic approaches and application studies of conducting polymers and copolymers: a review. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03987-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Facile synthesis of the chemically oxidative grafted copolymer of 2,6-diaminopyridine (DAP) and thiophene (Th) for optoelectronic and antioxidant studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131453] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Singh N, Aazam ES, Riaz U. Experimental and Computational Studies of Azo Dye-Modified Luminol Oligomers: Potential Application in Lithium Ion Sensing. ACS OMEGA 2021; 6:27833-27841. [PMID: 34722983 PMCID: PMC8552318 DOI: 10.1021/acsomega.1c03459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
With a view to design novel conjugated oligomers via a facile technique for its possible application in sensors, the present work reports oligomerization of Bismarck Brown (BB) dye with luminol. The structure was confirmed via IR studies, while the electronic transitions were confirmed by UV-visible studies. Morphological studies were carried out via SEM. Computational studies were carried out using the DFT method with a B3LYP 6-311G(d) basis set to investigate the optimized geometry, band gap, and vibrational and electronic transitions data. The HOMO-LUMO energies showed significant reduction in the band gap upon increasing the content of BB dye. The computational IR and UV spectra were noticed to be in close agreement with the experimental results. Spectrophotometric determination of Li ion was attempted using lithium chloride and a lithium carbonate drug commonly used in the treatment of bipolar disorder. The detection limit was noticed to be as low as 5.1 × 10-6 M, which could be used to design a Li ion sensor.
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Affiliation(s)
- Neetika Singh
- Materials Research Laboratory, Department of Chemistry,Jamia Millia Islamia, New Delhi 110025, India
| | - Elham S Aazam
- Chemistry Department, Faculty of Science, King Abdul Aziz University, Jeddah 23622, Saudia Arabia
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry,Jamia Millia Islamia, New Delhi 110025, India
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Singh N, Aazam ES, Riaz U. Synthesis and characterization of lawsone incorporated singlet oxygen generating conjugated polymers: Experimental and computational studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jadoun S, Riaz U, Yáñez J, Pal Singh Chauhan N. Synthesis, characterization and potential applications of Poly(o-phenylenediamine) based copolymers and Nanocomposites: A comprehensive review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110600] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Jadoun S, Rathore DS, Riaz U, Chauhan NPS. Tailoring of conducting polymers via copolymerization – A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110561] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Khokhar D, Jadoun S, Arif R, Jabin S, Budhiraja V. Copolymerization of o-phenylenediamine and 3-Amino-5-methylthio-1H-1,2,4-triazole for tuned optoelectronic properties and its antioxidant studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Riaz U, Singh N, Kumar P. Ultrasound-assisted synthesis of fluorescent oligomers of triphenylamine modified polyquinones: A comparison of experimental and computational spectral studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Khokhar D, Jadoun S, Arif R, Jabin S. Functionalization of conducting polymers and their applications in optoelectronics. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1819312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Deepali Khokhar
- Department of Chemistry, Lingaya’s Vidyapeeth, Faridabad, India
| | - Sapana Jadoun
- Department of Chemistry, Lingaya’s Vidyapeeth, Faridabad, India
| | - Rizwan Arif
- Department of Chemistry, Lingaya’s Vidyapeeth, Faridabad, India
| | - Shagufta Jabin
- Department of Chemistry, Manav Rachna International Institute of Research & Studies, Faridabad, India
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Jangid NK, Jadoun S, Yadav A, Srivastava M, Kaur N. Polyaniline-TiO2-based photocatalysts for dyes degradation. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03318-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Synthesis, characterization and dielectric studies of poly(1-naphthylamine)–tungsten disulphide nanocomposites. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2889-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Singh N, Arish M, Kumar P, Rub A, Riaz U. Experimental and Theoretical Studies of Novel Azo Benzene Functionalized Conjugated Polymers: In-vitro Antileishmanial Activity and Bioimaging. Sci Rep 2020; 10:57. [PMID: 31919477 PMCID: PMC6952527 DOI: 10.1038/s41598-019-56975-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 12/12/2019] [Indexed: 12/31/2022] Open
Abstract
To study the effect of insertion of azobenzene moiety on the spectral, morphological and fluorescence properties of conventional conducting polymers, the present work reports ultrasound-assisted polymerization of azobenzene with aniline, 1-naphthylamine, luminol and o-phenylenediamine. The chemical structure and polymerization was established via Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (1H-NMR) spectroscopy, while the electronic properties were explored via ultraviolet-visible (UV-vis) spectroscopy. Theoretical IR and UV spectra were computed using DFT/B3LYP method with 6-311G basis set while theoretical 1H-NMR spectra was obtained by gauge independent atomic orbital (GIAO) method. The theoretically computed spectra were found to be in close agreement with the experimental findings confirming the chemical as well as electronic structure of the synthesized polymers. Morphology was investigated by X-ray diffraction and transmission electron microscopy studies. Fluorescence studies revealed emission ranging between 530-570 nm. The polymers also revealed high singlet oxygen (1O2) generation characteristics. In-vitro antileishmanial efficacy as well as live cell imaging investigations reflected the potential application of these polymers in the treatment of leishmaniasis and its diagnosis.
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Affiliation(s)
- Neetika Singh
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India
| | - Mohd Arish
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India
| | - Prabhat Kumar
- Advance Instrumentation Research Facility, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abdur Rub
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India.
| | - Ufana Riaz
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India.
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Silver nanoparticles-embedded poly(1-naphthylamine) nanospheres for low-cost non-enzymatic electrochemical H2O2 sensor. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-03053-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Singh N, Kumar P, Kumar R, Aazam ES, Riaz U. Development of a near infrared novel bioimaging agent via co-oligomerization of Congo red with aniline and o-phenylenediamine: experimental and theoretical studies. RSC Adv 2019; 9:36479-36491. [PMID: 35540595 PMCID: PMC9075138 DOI: 10.1039/c9ra05814a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 10/29/2019] [Indexed: 01/04/2023] Open
Abstract
With a view to study the effect of insertion of a multifunctional dye moiety on the photo physical properties of conducting polymers, the present paper reports for the first time the homopolymerization and co-oligomerization of Congo red (CR) dye with aniline and o-phenylenediamine. The co-oligomerization was established by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (1H-NMR), and ultraviolet-visible (UV-vis) spectroscopy while the morphology was examined using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The theoretical as well as experimental data of 1H-NMR as well as IR studies confirmed the co-oligomer formation while ultraviolet-visible spectroscopy studies revealed a dynamic change in the optical properties upon variation of co-oligomer composition. X-ray diffraction studies established a crystalline morphology of oligomers. Live cell confocal imaging studies revealed that the co-oligomers could be effectively used in NIR imaging. To study the effect of insertion of a multifunctional dye moiety on the photophysical properties of conducting polymers, the present paper reports for the first time the homopolymerization and co-oligomerization of Congo red (CR) dye with aniline and o-phenylenediamine.![]()
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Affiliation(s)
- Neetika Singh
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India
| | - Prabhat Kumar
- Advanced Instrumentation Research Facility, Jawaharlal Nehru University NewDelhi 110067 India
| | - Raj Kumar
- School of Life Sciences, Jawaharlal Nehru University New Delhi 110067 India
| | - Elham S Aazam
- Chemistry Department, Faculty of Science, King Abdul Aziz University Jeddah 23622 Saudia Arabia
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India
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Jadoun S, Riaz U. A review on the chemical and electrochemical copolymerization of conducting monomers: recent advancements and future prospects. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2019.1669647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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Kanjirathamathadathil Saidu F, Joseph A, Thomas GV. Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue. J Appl Polym Sci 2019. [DOI: 10.1002/app.48318] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Femina Kanjirathamathadathil Saidu
- Department of ChemistrySt. Joseph's College Moolamattom 685591 Kerala India
- Department of ChemistryMaharajas College Ernakulam 682011 Kerala India
| | - Alex Joseph
- Department of ChemistryNewman College Thodupuzha 685585 Kerala India
| | - George V. Thomas
- Department of ChemistrySt. Joseph's College Moolamattom 685591 Kerala India
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Singh N, Kumar P, Kumar R, Riaz U. Ultrasound-Assisted Polymerization of Dyes with Phenylenediamines: Facile Method To Design Polymeric Photosensitizers with Enhanced Singlet Oxygen Generation Characteristics and Anticancer Activity. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01275] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neetika Singh
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | | | | | - Ufana Riaz
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
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Spectroscopic and Biophysical Interaction Studies of Water-soluble Dye modified poly(o-phenylenediamine) for its Potential Application in BSA Detection and Bioimaging. Sci Rep 2019; 9:8544. [PMID: 31189977 PMCID: PMC6561923 DOI: 10.1038/s41598-019-44910-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 05/23/2019] [Indexed: 11/25/2022] Open
Abstract
Ultrasound-assisted synthesis of water soluble poly(o-phenylenediamine) (POPD) and its doping with Acid Orange (AO), Fluorescein (Fluo) and Rhodamine-6G (R6G) dyes was carried out with a view to enhance the photophysical properties of POPD. XPS studies confirmed that doping of POPD occured through hydrogen bonding between NH group of POPD and C=O/SO−, S=O groups of the dyes. The presence of strong hydrogen bonding was also confirmed via UV-vis studies by the addition of urea and sodium chloride to the dye modified POPD adducts. Molar extinction coefficient of these adducts was found to bear a close relationship with the molecular structure. Fluorescence life time, (τf,) was found to be lowest (1.8 ns) for AO-POPD and highest (3.2 ns) for Fluo-POPD. The structure of AO-POPD was more strained, while that of Fluo-POPD was least strained. Intrinsic fluorescence decay constant, (k0f) showed increasing values for POPD, AO-POPD, Fluo-POPD, R6G-POPD as 0.071, 0.072, 0.153, and 0.172 (108 s−1), which could be correlated to the increasing strain-free molecular structure of the adducts. Circular dichroism spectra (CD) of BSA in presence of POPD and R6G- POPD revealed that it partially broke its helical structure, while Fluo-POPD and AO-POPD showed enhancement in the helical content. The 3-D fluorescence studies confirmed enhancement in hydrophobicity of POPD and R6G- POPD and increase in hydrophylicity of AO-POP and Fluo-POPD in the microenvironment of tryptophan residue-213 of BSA. Fluo-POPD and R6G-POPD adducts were chosen to find out the lowest detection limit (LOD) of BSA by differential pulse voltammetry (DPV) which was found to be 1.35 nM, and 1.65 nM using Fluo-POPD and R6G -POPD respectively. The binding constant of BSA with Fluo-POPD- and R6G-POPD was obtained as 3.98 × 106 Lmol−1 and 5.27 × 102 Lmol−1. These polymers could therefore, be used for the detection of BSA. Live cell imaging revealed that POPD nanoparticles were bound to the outer membrane of E. coli, while R6G-POPD, showed penetration into the cytoplasm and excellent labeling of E. coli. This facile technique could be used to design tunable biomarkers by tailoring the conjugated polymer with a desired dye molecule.
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Jadoun S, Verma A, Riaz U. Luminol modified polycarbazole and poly(o-anisidine): Theoretical insights compared with experimental data. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 204:64-72. [PMID: 29902772 DOI: 10.1016/j.saa.2018.06.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/02/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
With the aim to explore the effect of luminol as a multifunctional dopant for conjugated polymers, the present study reports the ultrasound-assisted doping of polycarbazole (PCz) and poly(o-anisidine) (PAnis) with luminol in basic, acidic and neutral media. The synthesized homopolymers and luminol doped polymers were characterized using FT-IR, UV-visible and XRD studies while the photo-physical properties were investigated via fluorescence spectroscopy. Density functional theory (DFT) calculations were performed to get insights into the structural, optical, and electronic properties of homopolymers of polycarbazole (PCz) and poly(o-anisidine) (PAnis). Vibrational bands B3LYP/6-311G (d,p) level, UV-vis spectral bands and electronic properties such as ionization potentials (IP), electron affinities (EA) and HOMO-LUMO band gap energies of the homopolymers and doped polymers were calculated and compared. Results revealed that luminol doped polymers showed different photo-physical characteristics in acidic, basic and neutral media which could be tuned to obtain near infrared (NIR) emitting polymers.
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Affiliation(s)
- Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Anurakshee Verma
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
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Riaz U, Jadoun S, Kumar P, Kumar R, Yadav N. Microwave-assisted facile synthesis of poly(luminol- co-phenylenediamine) copolymers and their potential application in biomedical imaging. RSC Adv 2018; 8:37165-37175. [PMID: 35557797 PMCID: PMC9089407 DOI: 10.1039/c8ra08373h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 10/29/2018] [Indexed: 11/21/2022] Open
Abstract
Conjugated copolymers have attracted much attention because of their outstanding photo-physical properties. The present work reports for the first time, microwave-assisted copolymerization of o-phenylenediamine with luminol using different weight ratios of the two monomers. The composition of the copolymers was confirmed by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (1H-NMR) while monomer reactivity ratios were determined using the Fineman–Ross method. Ultraviolet-visible spectroscopy revealed the variation in polaronic states upon copolymerization while X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses showed the morphology of the copolymers to be intermediate between that of the homopolymers. Confocal analysis and fluorescence studies revealed that the copolymers showed composition based blue as well as red emission which could be utilized for in vivo imaging of cancer cells. Development of bioimaging agents based on poly(o-phenylendiamine and luminol).![]()
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Affiliation(s)
- Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia New Delhi-110025 India
| | - Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia New Delhi-110025 India
| | - Prabhat Kumar
- Advanced Instrumentation Research Facility, Jawaharlal Nehru University New Delhi-110067 India
| | - Raj Kumar
- Cancer and Radiation Therapeutics Laboratory, School of Life Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Nitin Yadav
- Department of Chemistry, Indian Institute of Technology Delhi-110016 India
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Singh N, Madhav H, Yadav S, Jaiswar G. Impact of vanadium‐, sulfur‐, and dysprosium‐doped zinc oxide nanoparticles on various properties of PVDF/functionalized‐PMMA blend nanocomposites: Structural, optical, and morphological studies. J Appl Polym Sci 2018. [DOI: 10.1002/app.47116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- N. Singh
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
- Materials Research Laboratory, Department of ChemistryJamia Millia Islamia (A Central University) New Delhi India
| | - H. Madhav
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
- Drug Design and Synthesis Laboratory, Department of ChemistryJamia Millia Islamia (A Central University) New Delhi India
| | - S. Yadav
- Department of ChemistryAgra College Agra India
| | - G. Jaiswar
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
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Verma A, Riaz U. Spectral, thermal and morphological characteristics of ultrasonically synthesized poly(anisidine- co -phenylenediamine)/bentonite nanocomposites: A potential anti-diabetic drug carrier. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Jadoun S, Biswal L, Riaz U. Tuning the optical properties of poly(o-phenylenediamine-co-pyrrole) via template mediated copolymerization. Des Monomers Polym 2018; 21:75-81. [PMID: 29760604 PMCID: PMC5944376 DOI: 10.1080/15685551.2018.1459078] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/19/2018] [Indexed: 10/26/2022] Open
Abstract
Tailoring of conjugated monomers via copolymerization is a facile method to obtain tunable spectral, morphological and optical properties. To investigate the effect of copolymerization of pyrrole with o-phenylenediamine on the optoelectronic properties of the synthesized copolymers, the present work reports the synthesis of copolymers of o-phenylenediamine with pyrrole with varying mol ratios via chemical polymerization in methylene blue (MB) medium. Copolymerization was confirmed by Fourier transform infrared spectroscopy and ultraviolet-visible studies. Ultraviolet-visible spectroscopy revealed variation in the optical properties with the change in the monomer ratio. Fluorescence studies showed that the copolymer containing 80% poly(o-phenylenediamine) revealed highest quantum yield among all the copolymers. The emission color could therefore be tuned by careful selection of narrow band co-monomers, which could help in designing tunable fluorescence emitting materials for potential application in OLED devices.
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Affiliation(s)
- Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Liza Biswal
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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Jadoun S, Ashraf S, Riaz U. Microwave-assisted synthesis of copolymers of luminol with anisidine: Effect on spectral, thermal and fluorescence characteristics. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4212] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry; Jamia Millia Islamia; New Delhi 110025 India
| | - S.M. Ashraf
- Materials Research Laboratory, Department of Chemistry; Jamia Millia Islamia; New Delhi 110025 India
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry; Jamia Millia Islamia; New Delhi 110025 India
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Riaz U, Ashraf SM, Jadoun S, Iqbal A, Ahmad S. Silver ferrite and cobalt ferrite dispersed castor oil polyurethane nanocomposites: Quenching studies of bovine serum albumin. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1393683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - S. M. Ashraf
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Arshi Iqbal
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Shakeel Ahmad
- Government Degree College Mendhar (University of Jammu), Jammu and Kashmir
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Soldatkina OV, Kucherenko IS, Pyeshkova VM, Alekseev SA, Soldatkin OO, Dzyadevych SV. Improvement of amperometric transducer selectivity using nanosized phenylenediamine films. NANOSCALE RESEARCH LETTERS 2017; 12:594. [PMID: 29138950 PMCID: PMC5686037 DOI: 10.1186/s11671-017-2353-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 10/25/2017] [Indexed: 05/30/2023]
Abstract
In this work, we studied the conditions of deposition of a semipermeable polyphenylenediamine (PPD)-based membrane on amperometric disk platinum electrodes. Restricting an access of interfering substances to the electrode surface, the membrane prevents their impact on the sensor operation. Two methods of membrane deposition by electropolymerization were compared-at varying potential (cyclic voltammetry) and at constant potential. The cyclic voltammetry was shown to be easier in performing and providing better properties of the membrane. The dependence of PPD membrane effectiveness on the number of cyclic voltammograms and phenylenediamine concentration was analyzed. It was shown that the impact of interfering substances (ascorbic acid, dopamine, cysteine, uric acid) on sensor operation could be completely avoided using three cyclic voltammograms in 30 mM phenylenediamine. On the other hand, when working with diluted samples, i.e., at lower concentrations of electroactive substances, it is reasonable to decrease the phenylenediamine concentration to 5 mM, which would result in a higher sensitivity of transducers to hydrogen peroxide due to a thinner PPD layer. The PPD membrane was tested during continuous operation and at 8-day storage and turned out to be efficient in sensor and biosensors.
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Affiliation(s)
- O. V. Soldatkina
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601 Ukraine
| | - I. S. Kucherenko
- Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Zabolotnogo Street 150, Kyiv, 03148 Ukraine
| | - V. M. Pyeshkova
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601 Ukraine
- Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Zabolotnogo Street 150, Kyiv, 03148 Ukraine
| | - S. A. Alekseev
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601 Ukraine
| | - O. O. Soldatkin
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601 Ukraine
- Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Zabolotnogo Street 150, Kyiv, 03148 Ukraine
| | - S. V. Dzyadevych
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601 Ukraine
- Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Zabolotnogo Street 150, Kyiv, 03148 Ukraine
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Riaz U, Jadoun S, Kumar P, Arish M, Rub A, Ashraf SM. Influence of Luminol Doping of Poly(o-phenylenediamine) on the Spectral, Morphological, and Fluorescent properties: A Potential Fluorescent Marker for Early detection and Diagnosis of Leishmania donovani. ACS APPLIED MATERIALS & INTERFACES 2017; 9:33159-33168. [PMID: 28875693 DOI: 10.1021/acsami.7b10325] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
There has been a steady progress in the development of doped conjugated polymers to remarkably improve their photo physical properties for their application as biomarkers. With a view to enhance the spectral, morphological, and photo physical properties of poly(o-phenylenediamine) (POPD), the present work reports the synthesis of poly(o-phenylenediamine) and doping of this polymer using luminol. The formation of luminol-doped POPD was confirmed by infrared and ultraviolet-visible spectroscopies and X-ray diffraction studies. The energy band gap values and oscillator strength of luminol in acidic, basic, and neutral media were computed by density functional theory calculations using the B3LYP/6-31G (d) basis set and were compared with experimental data. The luminol doped POPDs show significant in vitro anti-leishmanial activity. Live cell imaging also proved that these molecules bind with the organelle of Leishmania also. These luminol doped POPDs were found non-toxic at the used concentrations on THP-1 derived human macrophage cells through methyl tetrazolium (MTT) assay. The results revealed that luminol doped POPDs were potentially non-toxic to human cells though exhibited immense potential to be used as a fluorescent marker to label Leishmania donovani for diagnostic and other studies.
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Affiliation(s)
| | | | - Prabhat Kumar
- Advanced Instrumentation Research Facility, Jawaharlal Nehru University , New Delhi 110067, India
| | | | - Abdur Rub
- Department of Medical Laboratory Sciences, College of Applied Medical Science, Majmaah University , Al Majmaah 15341, Kingdom of Saudia Arabia (KSA)
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Verma A, Riaz U. Mechanochemically synthesized poly(o-toluidine)-intercalated montmorillonite nanocomposites as antituberculosis drug carriers. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1320658] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Anurakshee Verma
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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Jadoun S, Sharma V, Ashraf SM, Riaz U. Sonolytic doping of poly(1-naphthylamine) with luminol: influence on spectral, morphological and fluorescent characteristics. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4055-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Riaz U, Ashraf SM, Fatima T, Jadoun S. Tuning the spectral, morphological and photophysical properties of sonochemically synthesized poly(carbazole) using acid Orange, fluorescein and rhodamine 6G. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:986-993. [PMID: 27852518 DOI: 10.1016/j.saa.2016.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 10/10/2016] [Accepted: 11/04/2016] [Indexed: 06/06/2023]
Abstract
The lifetimes and quantum yields of organic dyes are widely investigated due to their potential application in organic light emitting diodes (OLEDs). With a view to explore the possibility of enhancing the fluorescent properties of organic conjugated polymers such as polycarbazole, the present preliminary study reports for the first time, dye modification of polycarbazole using as acid orange (AO), fluorescein (Fluo) and Rhodamine 6G (R6G) for improving its fluorescence properties. The modification of PCz via doping was confirmed by FTIR, UV-visible, XRD and TEM analyses. The fluorescence studies and confocal microscopy were carried out both in solution and solid states to investigate the behavior of the dye modified PCz. Doping was found to be governed by the chemical structure of the dye. PCz-AO revealed intense doping which was confirmed by FTIR and UV-visible studies. PCz-Fluo and PCz-R6G exhibited the highest quantum yield and fluorescence emission in the solid state. Hence, by tailoring the structure of these conjugated polymers, stable fluorescence emitting materials can be designed for their potential application in OLEDs.
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Affiliation(s)
- Ufana Riaz
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
| | - S M Ashraf
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Talat Fatima
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Sapana Jadoun
- Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
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Jadoun S, Ashraf SM, Riaz U. Tuning the spectral, thermal and fluorescent properties of conjugated polymers via random copolymerization of hole transporting monomers. RSC Adv 2017. [DOI: 10.1039/c7ra04662f] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effect of copolymerization on the fluorescent properties of polycarbazole and poly(o-phenylenediamine).
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Affiliation(s)
- Sapana Jadoun
- Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Syed Marghoob Ashraf
- Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Ufana Riaz
- Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
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