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Kidd SR, Zhou W, Warren JJ, Leznoff DB. Inducing ring distortions in unsubstituted metallophthalocyanines using axial N-heterocyclic carbenes. Dalton Trans 2024; 53:6537-6546. [PMID: 38498318 DOI: 10.1039/d4dt00528g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
A series of metallophthalocyanine (PcM) complexes with axial N-heterocyclic carbene ligands (NHC; 1,3-diisopropylimidazol-2-ylidene (DIP) and 1,3-dimethylbenzimidazol-2-ylidene (DMB)) were prepared and structurally characterized. PcCoII(DIP), PcZnII(DIP), and PcZnII(DMB) are five-coordinate complexes with mild dome-type Pc-ring distortions, while PcFeII(DIP)2 is six-coordinate and has a very large ruffle-type ring-distortion with respect to typical PcM(L)2 systems. The distortion is induced by the highly steric axial DIP ligands. The distortions were quantified and classified by their bond lengths and torsion angles, and according to the normal-coordinate structural decomposition (NSD) analysis. Upon ligation of the NHC, the insoluble PcM materials were solublized in common organic solvents, with typical UV-visible Q-band maxima observable between 658 and 677 nm; the increased solubility is rationalized in terms of the reduced solid-state aggregation of the complexes, attributable to the axial ligation.
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Affiliation(s)
- Steven R Kidd
- Simon Fraser University, Department of Chemistry, 8888 University Drive, Burnaby BC V5A 1S6, Canada.
| | - Wen Zhou
- Simon Fraser University, Department of Chemistry, 8888 University Drive, Burnaby BC V5A 1S6, Canada.
| | - Jeffrey J Warren
- Simon Fraser University, Department of Chemistry, 8888 University Drive, Burnaby BC V5A 1S6, Canada.
| | - Daniel B Leznoff
- Simon Fraser University, Department of Chemistry, 8888 University Drive, Burnaby BC V5A 1S6, Canada.
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Efficient removal and recycle of acid blue 93 dye from aqueous solution by acrolein crosslinked chitosan hydrogel. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127825] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Recent Advances in the Synthesis, Properties, and Applications of Modified Chitosan Derivatives: Challenges and Opportunities. Top Curr Chem (Cham) 2021; 379:19. [DOI: 10.1007/s41061-021-00331-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 03/16/2021] [Indexed: 02/06/2023]
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Qureshi MA, Nishat N, Jadoun S, Ansari MZ. Polysaccharide based superabsorbent hydrogels and their methods of synthesis: A review. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2020. [DOI: 10.1016/j.carpta.2020.100014] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Nath J, Chowdhury A, Ali I, Dolui SK. Development of a gelatin‐
g
‐poly(acrylic acid‐
co
‐acrylamide)–montmorillonite superabsorbent hydrogels for
in vitro
controlled release of vitamin B
12. J Appl Polym Sci 2019. [DOI: 10.1002/app.47596] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Pellá MCG, Lima-Tenório MK, Tenório-Neto ET, Guilherme MR, Muniz EC, Rubira AF. Chitosan-based hydrogels: From preparation to biomedical applications. Carbohydr Polym 2018; 196:233-245. [PMID: 29891292 DOI: 10.1016/j.carbpol.2018.05.033] [Citation(s) in RCA: 312] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/29/2018] [Accepted: 05/09/2018] [Indexed: 12/29/2022]
Abstract
The advances in the field of biomaterials have led to several studies on alternative biocompatible devices and to their development focusing on their properties, benefits, limitations, and utilization of alternative resources. Due to their advantages like biocompatibility, biodegradability, and low cost, polysaccharides have been widely used in the development of hydrogels. Among the polysaccharides studied on hydrogels preparation, chitosan (pure or combined with natural/synthetic polymers) have been widely investigated for use in biomedical field. In view of potential applications of chitosan-based hydrogels, this review focuses on the most recent progress made with respect to preparation, properties, and their salient accomplishments for drug delivery and tissue engineering.
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Affiliation(s)
- Michelly C G Pellá
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Michele K Lima-Tenório
- Department of Chemistry, State University of Ponta Grossa, Av. Gen. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa, Paraná, Brazil.
| | - Ernandes T Tenório-Neto
- Department of Chemistry, State University of Ponta Grossa, Av. Gen. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa, Paraná, Brazil
| | - Marcos R Guilherme
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Edvani C Muniz
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil; Post-graduate Program on Materials Science & Engineering, Federal University of Technology, Paraná (UTFPR-LD), CEP 86036-370, Londrina, Paraná, Brazil
| | - Adley F Rubira
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil.
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