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Sk S, Mursed Ali S, Aash A, Kolay S, Mondal A, Mondal S, Hossain Khan A, Sepay N, Rahaman Molla M. Solvent Geometry Regulated J- and H-Type Aggregates of Photoswitchable Organogelator: Phase-Selective Thixotropic Gelation and Oil Spill Recovery. Chemistry 2024; 30:e202303369. [PMID: 38258609 DOI: 10.1002/chem.202303369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 01/24/2024]
Abstract
We demonstrate supramolecular polymerization and formation of 1D nanofiber of azobenzene based organogelator (AZO-4) in cyclic hydrocarbon solvents (toluene and methylcyclohexane). The AZO-4 exhibits J- and H-type aggregates in toluene: MCH (9 : 1) and MCH: toluene (9 : 1) respectively. The type of aggregate was governed by the geometry of the solvents used in the self-assembly process. The J-type aggregates with high thermal stability in toluene is due to the enhanced interaction of AZO-4 π- surface with the toluene π-surface, whereas H-aggregate with moderate thermal stability in MCH was due to the interruption of the cyclic hydrocarbon in van der Waals interactions of peripheral chains of AZO-4 molecule. The light induced reversible photoisomerization is observed for both J- and H-aggregates. The macroscopic property revealed spontaneous and strong gelation in toluene preferably due to the strong interactions of the AZO-4 nanofibers with the toluene solvent molecules compared to the MCH. The rheological measurements revealed thixotropic nature of the gels by step-strain experiments at room temperature. The thermodynamic parameter (ΔHm) of gel-to-sol transition was determined for all the gels to get more insight into the gelation property. Furthermore, the phase selective gelation property was extended to the oil spill recovery application using diesel/water and petrol/water mixture.
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Affiliation(s)
- Sujauddin Sk
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
| | - Sk Mursed Ali
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
| | - Asmita Aash
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
| | - Soumya Kolay
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
| | - Arun Mondal
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
| | - Sahabaj Mondal
- Chemical Science, IISER Kolkata, Campus Rd, Mohanpur, Haringhata Farm, India-, 741246
| | - Ali Hossain Khan
- Chemical and Biological Sciences, SNBNCBS Saltlake, JD Block, Sector 3, Bidhan Nagar, Kolkata, India-, 700106
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourse College, P-1/2, Suhrawardy Ave, Beniapukur, Kolkata, India-, 700017
| | - Mijanur Rahaman Molla
- Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata, India-, 700009
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Ali SM, Sk S, Sepay N, Molla MR. Entropy-Enthalpy Compensation in Solvent Geometry Regulated Supramolecular Polymerization of Luminescent Napthalimide via a Non-Cooperative, Isodesmic Mechanism. Chemistry 2023:e202303587. [PMID: 38031526 DOI: 10.1002/chem.202303587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/01/2023]
Abstract
Supramolecular polymers of π-conjugated systems are an important class of materials with fascinating functions and properties originated from the dynamic behavior and highly ordered molecular organizations. Here, a donor-π-acceptor based functionalized luminescent napthalene monoimide (NMI) undergoes J-type self-assembly by non-covalent interactions via a non-cooperative, isodesmic mechanism to form supramolecular 1D nanowire. The fundamental insights into the thermodynamics regulating the supramolecular polymerization were derived through the fitting of the isodesmic model to variable temperature UV/Vis data in linear (dodecane) and nonliner hydrocarbon (decalin) based solvents. This shows a significant role of entropy-enthalpy compensation in solvent geometry-regulated formation and stabilization of supramolecular polymer. Furthermore, we have quantitively estimated the influence of solvent geometry and found that NMI forms stronger self-assembly and spontaneous gel in linear hydrocarbon based solvent compared to nonliner one and thereby substantially increases the degree of polymerization in linear hydrocarbon solvent (dodecane). This is accredited to the effective influence of the linear hydrocarbon solvent molecules in the polymerization process by favourable van der waals interactions with the peripheral alkyl chains of the NMI monomers in contrast to unfavourable interaction of nonliner hydrocarbon solvent due to geometry mismatch.
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Affiliation(s)
- Sk Mursed Ali
- Department of Chemistry, University of Calcutta, 92 A. P. C. Roy, Kolkata, India-, 700009
| | - Sujauddin Sk
- Department of Chemistry, University of Calcutta, 92 A. P. C. Roy, Kolkata, India-, 700009
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourne College, P-1/2, Suhrawardy Ave, Beniapukur, Kolkata, India-, 700017
| | - Mijanur Rahaman Molla
- Department of Chemistry, University of Calcutta, 92 A. P. C. Roy, Kolkata, India-, 700009
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Moharana P, Santosh G. Amphiphilic perylene diimide-based fluorescent hemispherical aggregates as probes for metal ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122696. [PMID: 37043834 DOI: 10.1016/j.saa.2023.122696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 05/14/2023]
Abstract
The self-assembly behaviour of a newly synthesized amphiphilic core-positioned thioester appended with carboxylic acid functionalized perylene diimide derivative is studied in different organic solvents. Fluorescent J-type hemispherical aggregates are formed in THF solution. The effect of added metal ions on these fluorescent aggregates is evaluated using spectroscopic techniques, where we found these probes bind selectively to Fe3+ and Ba2+ ions. Two equivalents of Fe3+ ions bind cooperatively to one equivalent of perylene diimide derivative in the hemispherical aggregates with a binding constant of 1.4×107 M-1 and the limit of detection (LOD) was calculated to be 8.66×10-6 M. The positive cooperative binding effect of Fe3+ ions towards hemispherical aggregates equipped with perylene diimide derivatives leads to supramolecular polymerization. Ba2+ ions showed selectivity and sensitivity towards the fluorescent aggregates in THF by quenching the fluorescence intensity completely. The linear Stern-Volmer plot with a Stern-Volmer constant value of 502.6 M-1 signifies the heavy atom effect of Ba2+ ions, leading to fluorescence quenching. The morphological transformation of the fluorescent J-type hemispherical aggregates in the presence of Fe3+ and Ba2+ was studied in detail using electron microscopy.
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Affiliation(s)
- Prajna Moharana
- Division of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Chennai 600127, India
| | - G Santosh
- Division of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Chennai 600127, India.
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Sanches SCDC, Ré MI, Silva-Júnior JOC, Ribeiro-Costa RM. Organogel of Acai Oil in Cosmetics: Microstructure, Stability, Rheology and Mechanical Properties. Gels 2023; 9:gels9020150. [PMID: 36826320 PMCID: PMC9956281 DOI: 10.3390/gels9020150] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/07/2022] [Accepted: 12/11/2022] [Indexed: 02/16/2023] Open
Abstract
Organogel (OG) is a semi-solid material composed of gelling molecules organized in the presence of an appropriate organic solvent, through physical or chemical interactions, in a continuous net. This investigation aimed at preparing and characterizing an organogel from acai oil with hyaluronic acid (HA) structured by 12-hydroxystearic acid (12-HSA), aiming at topical anti-aging application. Organogels containing or not containing HA were analyzed by Fourier-transform Infrared Spectroscopy, polarized light optical microscopy, thermal analysis, texture analysis, rheology, HA quantification and oxidative stability. The organogel containing hyaluronic acid (OG + HA) has a spherulitic texture morphology with a net-like structure and absorption bands that evidenced the presence of HA in the three-dimensional net of organogel. The thermal analysis confirmed the gelation and the insertion of HA, as well as a good thermal stability, which is also confirmed by the study of oxidative stability carried out under different temperature conditions for 90 days. The texture and rheology studies indicated a viscoelastic behavior. HA quantification shows the efficiency of the HA cross-linking process in the three-dimensional net of organogel with 11.22 µg/mL for cross-linked HA. Thus, it is concluded that OG + HA shows potentially promising physicochemical characteristics for the development of a cosmetic system.
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Affiliation(s)
| | - Maria Inês Ré
- IMT Mines Albi-Carmaux, CNRS UMR 5302, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, CEDEX 09, 81013 Albi, France
| | - José Otávio Carréra Silva-Júnior
- Laboratory R&D Pharmaceutical and Cosmetic, Faculty of Pharmaceutical Sciences, Federal University of Pará, Belém 66075-110, Brazil
| | - Roseane Maria Ribeiro-Costa
- Laboratory of Pharmaceutical Nanotechnology, College of Pharmacy, Federal University of Pará, Belém 66075-110, Brazil
- Correspondence: ; Tel.: +55-91-3201-7203
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Abualnaja M, Alrefaei AF, Abumelha HM, Alaysuy O, Mogharbel AT, Almahri A, El-Metwaly NM. Synthesis and Self-assembly of Novel Nanofeather-like Fluorescent Alkyloxy-Containing Diphenyl Ether Organogelators. ACS OMEGA 2022; 7:34309-34316. [PMID: 36188290 PMCID: PMC9520553 DOI: 10.1021/acsomega.2c03838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
In this study, novel fluorescent low molecular-weight organogelators are derived from diphenyl ethers and substituted with para-alkoxy groups of different aliphatic chain lengths. The present research promotes the preparation of innovative nanofeather-like assemblies from the synthesized diphenyl ether-derived organogelators. The gelation performance of the prepared alkoxy-substituted diphenyl ethers was reported. The synthesis procedure was achieved by using a base-catalyzed reaction of hydroxyl-substituted diphenyl with various alcohols of different aliphatic chain lengths. The chemical structures of the synthesized diphenyl ether derivatives were studied by 1H/13C NMR and infrared spectroscopy. Fluorescence and UV-vis absorption spectral analyses showed solvatochromism. The diphenyl ether derivatives with longer alkoxy terminal substituents showed enhanced thermoreversible gelation activity as compared to the diphenyl ether derivatives with shorter alkoxy terminal substituents. The morphological properties of the self-assembled diphenyl ethers were studied by transmission electron microscopy and scanning electron microscopy, which showed supramolecular architectures of highly ordered nanofeathers, enforced by van der Waals interactions and π-stacks. Depending on the length of the aliphatic tail, different morphologies were detected, including nanofeathers, nanofibers, and nanosheets. The antimicrobial and cytotoxic properties of the prepared diphenyl ether-derived organogelators were examined to confirm their possible use in various fields like drug delivery systems.
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Affiliation(s)
- Matokah
M. Abualnaja
- Department
of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia
| | - Abdulmajeed F. Alrefaei
- Department
of Biology/Genetic and Molecular Biology Central Laboratory (GMCL),
Jamoum University College, Umm Al Qura University, Makkah 2203, Saudi Arabia
| | - Hana M. Abumelha
- Department
of Chemistry, College of Science, Princess
Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Omaymah Alaysuy
- Department
of Chemistry, College of Science, University
of Tabuk, Tabuk 71474, Saudi Arabia
| | - Amal T. Mogharbel
- Department
of Chemistry, College of Science, University
of Tabuk, Tabuk 71474, Saudi Arabia
| | - Albandary Almahri
- Department
of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Nashwa M. El-Metwaly
- Department
of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia
- Department
of Chemistry, Faculty of Science, Mansoura
University, El-Gomhoria
Street, Mansoura 35516, Egypt
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