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Sakshi S, Dey S, Chowdhury S, Ray S. Characterization of a Zeolite-Y-Encapsulated Zn(II)Salmphen Complex with Targeted Anticancer Property. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55518-55532. [PMID: 38010148 DOI: 10.1021/acsami.3c13955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Resistance and severe side effects of classical chemotherapeutic drugs are major challenges to cancer therapy. New therapeutic agents and combination therapy are considered potential solutions that enhance the efficacy of the drug as well as reduce drug resistance. The success of a platinum-based anticancer drug, cisplatin, has paved the way to explore metal-centered anticancer therapeutic agents. Herein, the zeolite-Y-encapsulated Zn(II)Salmphen complex is synthesized using a flexible ligand approach. The Zn(II)Salmphen complex and its encapsulation within the supercage of zeolite-Y were characterized by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, UV-vis, fluorescence, powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), NMR, and high-resolution mass spectrometry (HRMS) techniques. Elemental analysis, PXRD, and SEM, all together confirm the integrity of the zeolite framework after the encapsulation of Zn(II)Salmphen complex in it, and elemental analysis provides the Si/Al ratio and Zn content present. FTIR and XPS studies indicate the successful encapsulation of the complex. NMR and HRMS studies confirm that the Zn(II)Salmphen complex is dimer; however, within the supercage of zeolite-Y, it is expected to exist as a monomer. The extent of structural modification of the encapsulated Zn(II)Salmphen complex is intimated by electronic spectroscopic studies. The free-state Zn(II)Salmphen is a fluorescent complex, and even the encapsulated Zn(II)Salmphen complex, when taken in dimethyl sulfoxide (DMSO), shows fluorescence. In comparison to cisplatin, encapsulated Zn(II)Salmphen complex displays comparable cytotoxicity (IC50 = 2.0 ± 0.5 μg/mL at 48 h) toward breast cancer cell line, whereas free Zn(II)Salmphen has better cytotoxicity (IC50 = 1.5 ± 0.5 μg/mL at 48 h). Importantly, elemental analysis has revealed that the IC50 value, if calculated only in terms of Zn(II)Salmphen within Zn(II)Salmphen-Y, is as low as 54.59 ng/mL, indicating a very high efficacy of the drug. Interestingly, a 48 h treatment with the encapsulated Zn(II)Salmphen complex shows no toxicity toward immortal noncancerous keratinocyte cells (HaCaT), whereas cisplatin has an IC50 value of 1.75 ± 0.5 μg/mL. Internalization studies indicate that zeolite-Y targets cancer cells better than it does noncancerous ones. Hence, cellular uptake of the zeolite-encapsulated Zn(II)Salmphen complex in cancer cells is more than that in HaCaT cells, resulting in the generation of more reactive oxygen species and cell death. Significant upregulation of DNA damage response protein indicates that DNA-damage-induced cellular apoptosis could be the mechanism of drug action. Overall, the zeolite-encapsulated Zn(II)Salmphen complex could be a better alternative to the traditional drug cisplatin with minimal effect on noncancerous HaCaT cells and can also be utilized as a fluorescent probe in exploring the mechanistic pathway of its activity against cancer cells.
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Xu V, Pandey B, Jayawardhena JPID, Krause JA, Guan H. The curious cases of tetrahydrosalen-type ligands interacting with Ni(II): structures and ligand-based oxidation reactions. Dalton Trans 2023; 52:11543-11551. [PMID: 37545404 DOI: 10.1039/d3dt02023a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
This work centers around the nickel complexes derived from two tetrahydrosalen-type proligands: N,N'-bis(2-hydroxybenzyl)-o-phenylenediamine (H2salophan) and N,N'-bis(2-hydroxy-3-methylbenzyl)-o-phenylenediamine (H2salophan_Me). The reaction of H2salophan with Ni(OAc)2·4H2O generates a dinuclear complex Ni2(Hsalophan)2(OAc)2 or Na[Ni2(salophan)2(OAc)] when NaOH is added to assist ligand deprotonation. The reaction of H2salophan_Me with Ni(OAc)2·4H2O, however, yields a mononuclear complex Ni(Hsalophan_Me)2. Unlike the corresponding salen-type nickel complexes, these tetrahydrosalen-type complexes are paramagentic and air sensitive (in solution). Oxidation by O2 or peroxides results in dehydrogenation of the ligand backbone to form the salen-type complexes.
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Affiliation(s)
- Vivian Xu
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.
| | - Bedraj Pandey
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.
| | | | - Jeanette A Krause
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.
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Li S, Liu M, Liu Q, Pan F, Zhang L, Ma K. Zeolite encapsulated Cu(II)-salen complexes for the catalytic degradation of dyes in a neutral condition. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yang Y, Liu X, Lyu Y, Liu Y, Zhan W, Yu Z, Fan L, Yan Z. Enhanced dispersion of nickel nanoparticles on SAPO-5 for boosting hydroisomerization of n-hexane. J Colloid Interface Sci 2021; 604:727-736. [PMID: 34284176 DOI: 10.1016/j.jcis.2021.07.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/24/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022]
Abstract
The nickel based bifunctional catalyst with enhanced hydroisomerization performance was developed using an in-situ solid synthesis method. It was achieved to stabilize smaller Ni active sites on SAPO-5 using ethylenediaminetetraacetic acid (EDTA) ligands. The role of EDTA ligands was clarified by controlling the molar ratio of EDTA to Ni2+ (EDTA/Ni2+) over Ni/SAPO-5 catalysts. EDTA ligands inhibited the formation of nickel aluminate spinel and aggregation of NiO species during calcination, which dispersed Ni nanoparticles in a mean size of 4.7 nm on SAPO-5. The size of Ni nanoparticles could be controlled by regulating EDTA/Ni2+ ratio in [Ni-EDTA]2- complex. The prepared catalyst exhibited high yield of isomers (54.0%) and di-branched isomers selectivity (18.0%) in the n-hexane hydroisomerization, which was approximately 2 times higher than that of the Ni/SAPO-5 catalyst without EDTA ligands at similar conversion. These results are important to propose a facile approach for the preparation of highly dispersed non-noble metal based bifunctional catalysts at a high loading.
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Affiliation(s)
- Ye Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
| | - Xinmei Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China.
| | - Yuchao Lyu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
| | - Yuxiang Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China; State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266555, China
| | - Weilong Zhan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
| | - Zhumo Yu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
| | - Lei Fan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
| | - Zifeng Yan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
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Ni J, Di J, Ma C, He YC. Valorisation of corncob into furfuryl alcohol and furoic acid via chemoenzymatic cascade catalysis. BIORESOUR BIOPROCESS 2021; 8:113. [PMID: 38650293 PMCID: PMC10991097 DOI: 10.1186/s40643-021-00466-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/06/2021] [Indexed: 12/15/2022] Open
Abstract
Heterogeneous tin-based sulfonated graphite (Sn-GP) catalyst was prepared with graphite as carrier. The physicochemical properties of Sn-GP were captured by FT-IR, XRD, SEM and BET. Organic acids with different pKa values were used to assist Sn-GP for transforming corncob (CC), and a linear equation (Furfural yield = - 7.563 × pKa + 64.383) (R2 = 0.9348) was fitted in acidic condition. Using sugarcane bagasse, reed leaf, chestnut shell, sunflower stalk and CC as feedstocks, co-catalysis of CC (75.0 g/L) with maleic acid (pKa = 1.92) (0.5 wt%) and Sn-GP (3.6 wt%) yielded the highest furfural yield (47.3%) for 0.5 h at 170 °C. An effective furfural synthesis was conducted via co-catalysis with Sn-GP and maleic acid. Subsequently, E. coli CG-19 and TS completely catalyzed the conversion of corncob-derived FAL to furfurylalcohol and furoic acid, respectively. Valorisation of available renewable biomass to furans was successfully developed in tandem chemoenzymatic reaction.
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Affiliation(s)
- Jiacheng Ni
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Pharmacy, Changzhou University, Changzhou, China
| | - Junhua Di
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Pharmacy, Changzhou University, Changzhou, China
| | - Cuiluan Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, China
| | - Yu-Cai He
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Pharmacy, Changzhou University, Changzhou, China.
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, China.
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Kumari S, Ramesh A, Das B, Ray S. Zeolite-Y encapsulated cobalt(ii) Schiff-base complexes employed for photocatalytic dye-degradation and upcycling CO2. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01190h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Planar cobalt(ii) Schiff-base complexes show modified structural and functional properties after encapsulation inside zeolite-Y.
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Affiliation(s)
| | | | - Bidisa Das
- Technical Research Center (TRC) & School of Applied and Interdisciplinary Sciences (SAIS)
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Saumi Ray
- Birla Institute of Technology and Science
- Pilani
- India
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Sain S, Kishore D, Jain S, Sharma V, Srivastava M, Sankararamakrishnan N, Mishra S, Dwivedi J, Wabaidur SM, Sharma S. Zeolite enslaved transition metal complexes as novel heterogeneous catalysts for synthesis of polycyclic heterocycles using suzuki--miyaura cross coupling reaction under greener conditions. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108230] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kumari S, Ray S. Zeolite encapsulated Ni( ii) Schiff-base complexes: improved catalysis and site isolation. NEW J CHEM 2020. [DOI: 10.1039/d0nj01590c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Site isolation and distorted geometry of the zeolite encapsulated complex govern the improved catalysis for phenol hydroxylation reaction.
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Affiliation(s)
| | - Saumi Ray
- Birla Institute of Technology and Science
- Pilani
- India
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Kumari S, Das B, Ray S. An insight into the catalytic activity of palladium Schiff-base complexes towards the Heck coupling reaction: routes via encapsulation in zeolite-Y. Dalton Trans 2019; 48:15942-15954. [PMID: 31589228 DOI: 10.1039/c9dt03341f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A small set of palladium Schiff-base complexes were synthesized and entrapped in the supercage of zeolite-Y. All these novel complexes in both states were systematically characterized with the help of different characterization tools like XRD, SEM-EDS, thermal analysis, XPS, IR, electronic spectroscopic and theoretical studies. These systems were thoroughly studied for their catalytic activities towards the Heck coupling reaction between bromobenzene and styrene. The aim was to meticulously compare the performance of the homogeneous catalysts, i.e., neat palladium Schiff-base complexes with that of their heterogeneous encapsulated analogs. The experimental as well as theoretical electronic structure studies suggested significant structural modification of the guest Pd(ii)-Schiff-base complexes after encapsulation in zeolite Y. These complexes manifested modified catalytic activities towards the Heck coupling reaction. The theoretical studies reinforced the correlation between the modified catalytic properties and structural alteration of these complexes on encapsulation. These heterogeneous catalysts essentially demonstrated the benefits of easy separation and reusability as compared to the homogeneous analogues.
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Affiliation(s)
- Susheela Kumari
- Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Bidisa Das
- Technical Research Center, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Saumi Ray
- Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
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Kumari S, Choudhary A, Ray S. The functionality of the hybrid systems driven by molecular dimension of the guest copper Schiff-base complexes entrapped in Zeolite-Y. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Susheela Kumari
- Birla Institute of Technology and Science; Pilani Rajasthan 333031 India
| | - Archana Choudhary
- Birla Institute of Technology and Science; Pilani Rajasthan 333031 India
| | - Saumi Ray
- Birla Institute of Technology and Science; Pilani Rajasthan 333031 India
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Kumari S, Maddipoti K, Das B, Ray S. Palladium-Schiff Base Complexes Encapsulated in Zeolite-Y Host: Functionality Controlled by the Structure of a Guest Complex. Inorg Chem 2019; 58:1527-1540. [PMID: 30629414 DOI: 10.1021/acs.inorgchem.8b03031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of palladium complexes of tetradendate Schiff base ligands L1 ( N,N'-bis(salicylidene)phenylene-1,3-diamine) and its derivatives L2 and L3 have been synthesized by using the "flexible ligand method" within the supercage of zeolite-Y. These complexes in both their free and encapsulated states have been thoroughly characterized with the help of different characterization tools such as XRD, SEM-EDS, BET, thermal analysis, XPS, IR, and UV-vis spectroscopic studies. All these encapsulated complexes are identified with a dramatic red shift of the d-d transition in their electronic spectra when compared with their free states. Theoretical as well as experimental studies together suggest a substantial modification of the structural parameters of square planar Pd(II)-Schiff base complexes upon encapsulation within the supercage of zeolite-Y. Encapsulated complexes are also subject to show modified catalytic activities toward the Heck reaction. These heterogeneous catalysts can easily be separated from the reaction mixture and reused.
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Affiliation(s)
- Susheela Kumari
- Birla Institute of Technology and Science , Pilani , Rajasthan 333031 , India
| | - Karthik Maddipoti
- Birla Institute of Technology and Science , Pilani , Rajasthan 333031 , India
| | - Bidisa Das
- Technical Research Center , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
| | - Saumi Ray
- Birla Institute of Technology and Science , Pilani , Rajasthan 333031 , India
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Fast and reversible redox reaction of polyNi(salphen)@reduced graphene oxide/multiwall carbon nanotubes composite for supercapacitors. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Dixit MK, Dubey M. Li+-Induced fluorescent metallogel: a case of ESIPT-CHEF and ICT phenomenon. Phys Chem Chem Phys 2018; 20:23762-23772. [DOI: 10.1039/c8cp04579h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A fluorescent metallogel has been synthesized from non-fluorescent ingredients viz. the smallest possible LMW aromatic symmetrical gelator 1 and LiOH, whereas KOH produces a non-fluorescent solution, and regioisomer 2 with LiOH shows an ICT assisted fluorescent precipitate rather than a metallogel.
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Affiliation(s)
- Manish Kumar Dixit
- Department of Chemistry
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi – 221005
- India
| | - Mrigendra Dubey
- Soft Materials Research Laboratory
- Discipline of Metallurgy Engineering and Materials Science
- Indian Institute of Technology Indore
- Indore 453552
- India
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Choudhary A, Kumari S, Ray S. Tuning of Catalytic Property Controlled by the Molecular Dimension of Palladium-Schiff Base Complexes Encapsulated in Zeolite Y. ACS OMEGA 2017; 2:6636-6645. [PMID: 31457259 PMCID: PMC6644941 DOI: 10.1021/acsomega.7b01071] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 09/28/2017] [Indexed: 05/28/2023]
Abstract
Planar palladium-Schiff base complexes are synthesized, maintaining the order of their molecular dimensions as PdL1 < PdL2 < PdL3 < PdL4 < PdL5 in free state, as well as encapsulated in zeolite Y, where L1: N,N'-bis(salicylidene)ethylenediamine and L2, L3, L4, and L5 are derivatives of L1. All encapsulated complexes have shown better catalytic activity for the sulfoxidation of methyl phenyl sulfide in comparison to their homogeneous counter parts. These hybrid systems are characterized with the help of different characterization techniques such as X-ray diffraction analysis, scanning electron microscopy-energy-dispersive X-ray spectrometry, X-ray photoelectron spectroscopy, Fourier transform infrared, and UV-visible spectroscopy; all of these studies have suggested that the largest complex deviates by the maximum from its free-state properties, and a radical change in the reactivity of the complex is observed.
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Encapsulated Schiff base nickel complex in zeolite Y: Correlation between catalytic activities and extent of distortion supported by experimental and DFT studies. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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