1
|
Affiliation(s)
- Jürgen Liebscher
- Institute of Chemistry; Humboldt-University Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| |
Collapse
|
2
|
Manini P, Lino V, Franchi P, Gentile G, Sibillano T, Giannini C, Picardi E, Napolitano A, Valgimigli L, Chiappe C, d'Ischia M. A Robust Fungal Allomelanin Mimic: An Antioxidant and Potent π-Electron Donor with Free-Radical Properties that can be Tuned by Ionic Liquids. Chempluschem 2019; 84:1331-1337. [PMID: 31944050 DOI: 10.1002/cplu.201900195] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/16/2019] [Indexed: 12/23/2022]
Abstract
Developing effective strategies to increase the chemical stability and to fine-tune the physico-chemical properties of melanin biopolymers by rational control of π-electron conjugation is an important goal in materials science for biomedical and technological applications. Herein we report that poly-1,8-dihydroxynaphthalene (pDHN), a non-nitrogenous, catechol-free fungal melanin mimic, displays a high degree of structural integrity (from MALDI-MS and CP/MAS 13 C NMR analysis), a strong radical scavenging capacity (DPPH and FRAP assays), and an unusually intense EPR signal (g=2.0030). Morphological and spectral characterization of pDHN, along with deassembly experiments in ionic liquids, indicated amorphous aggregates of small globular structures with an estimated stacking distance of 3.9 Å and broadband absorption throughout the visible range. These results indicate that DHN-based melanins exhibit a high structural integrity and enhanced antioxidant and free-radical properties of potentially greater biomedical and technological relevance than for typical indole-based eumelanins.
Collapse
Affiliation(s)
- Paola Manini
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Valeria Lino
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Paola Franchi
- Department of Chemistry "G. Ciamician", University of Bologna, Via S. Giacomo 11, 40126, Bologna, Italy
| | - Gennaro Gentile
- Institute for Polymers Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei 34, 80078, Pozzuoli, Italy
| | - Teresa Sibillano
- Istituto di Cristallografia (IC) CNR, via Amendola 122/O, 70126, Bari, Italy
| | - Cinzia Giannini
- Istituto di Cristallografia (IC) CNR, via Amendola 122/O, 70126, Bari, Italy
| | - Emanuela Picardi
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Alessandra Napolitano
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Luca Valgimigli
- Department of Chemistry "G. Ciamician", University of Bologna, Via S. Giacomo 11, 40126, Bologna, Italy
| | - Cinzia Chiappe
- Department of Pharmacy, University of Pisa, via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Marco d'Ischia
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, 80126, Napoli, Italy
| |
Collapse
|
3
|
Lei H, Langlois A, Fortin D, Karsenti PL, Aly SM, Harvey PD. Rendering cross-conjugated azophenine derivatives emissive to probe the silent photophysical properties of emeraldine. Phys Chem Chem Phys 2018; 19:21532-21539. [PMID: 28762412 DOI: 10.1039/c7cp04102k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An azophenine derivative was synthesized by coupling truxene and azophenine via the copper-free Sonagashira reaction using Pd2(dba)3 and As(PPh)3 as catalysts. The crystal structure of this heavy azophenine model (∼4000) was made and the identity of the structure was confirmed. By introducing truxene groups into this cross-conjugated structure, the deactivating rotations around the NH-C6H4 bonds were slowed down, which rendered this derivative near-IR emissive at 298 K. This species provided then the appropriate spectral and kinetic signatures for knowing where and what to look for in emeraldine, which was called non-emissive. Besides, two other compounds were also synthesized as models for this azophenine derivative for comparison and interpretation purposes.
Collapse
Affiliation(s)
- Hu Lei
- Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ J1K 2R1, Canada.
| | | | | | | | | | | |
Collapse
|
4
|
Aebly AH, Levy J, Steger BJ, Quirke JC, Belitsky JM. Expedient synthesis of eumelanin-inspired 5,6-dihydroxyindole-2-carboxylate ethyl ester derivatives. RSC Adv 2018; 8:28323-28328. [PMID: 35542496 PMCID: PMC9083952 DOI: 10.1039/c8ra06148c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/03/2019] [Accepted: 07/28/2018] [Indexed: 11/21/2022] Open
Abstract
Dihydroxyindoles such as 5,6-dihydroxyindole-2-carboxylic acid (DHICA) are the main monomer units of eumelanin, the black to brown pigment in humans, and have emerging biological roles beyond melanin. Elaboration of commercially available 5,6-dimethoxy-2-carboxylate ethyl ester provides ready access to DHICA-inspired small molecules, including 3-(hetero)aryl-indoles and 4,7-di-(hetero)aryl-indoles. Two concise syntheses of novel aryl- and heteroaryl-substituted 5,6-dimethoxyindole-2-carboxylate ethyl esters utilizing regioselective halogenation/dehalogenation and Suzuki coupling are presented.![]()
Collapse
Affiliation(s)
- Andrew H. Aebly
- Department of Chemistry and Biochemistry
- Oberlin College
- Oberlin
- USA
| | - Jeffrey N. Levy
- Department of Chemistry and Biochemistry
- Oberlin College
- Oberlin
- USA
| | | | | | | |
Collapse
|
5
|
Ishikawa R, Iwasawa R, Takiyama Y, Yamauchi T, Iwanaga T, Takezaki M, Watanabe M, Teramoto N, Shimasaki T, Shibata M. Synthesis of 1,2-Bis(2-aryl-1H-indol-3-yl)ethynes via 5-exo-Digonal Double Cyclization Reactions of 1,4-Bis(2-isocyanophenyl)buta-1,3-diyne with Aryl Grignard Reagents. J Org Chem 2016; 82:652-663. [DOI: 10.1021/acs.joc.6b02668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rino Ishikawa
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Ryosuke Iwasawa
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Yuichiro Takiyama
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Tomokazu Yamauchi
- Department
of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Tetsuo Iwanaga
- Department
of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Makoto Takezaki
- Department
of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Motonori Watanabe
- International
Institute for Carbon-Neutral Energy Research (I2CNER), Molecular Photoconversion Devices Division, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Naozumi Teramoto
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Toshiaki Shimasaki
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| | - Mitsuhiro Shibata
- Department
of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
| |
Collapse
|
6
|
Affiliation(s)
- Radosław Mrówczyński
- NanoBioMedical Centre; Adam Mickiewicz University; Umultowska 85 61-614 Poznan Poland
| | - Roksana Markiewicz
- NanoBioMedical Centre; Adam Mickiewicz University; Umultowska 85 61-614 Poznan Poland
| | - Jürgen Liebscher
- National Institute of Research and Development for Isotopic and Molecular Technologies; Donat 67-103 RO-400293 Cluj-Napoca Romania
- Department of Chemistry; Humboldt-University Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
| |
Collapse
|
7
|
Fan KW, Peterson MB, Ellersdorfer P, Granville AM. Expanding the aqueous-based redox-facilitated self-polymerization chemistry of catecholamines to 5,6-dihydroxy-1H-benzimidazole and its 2-substituted derivatives. RSC Adv 2016. [DOI: 10.1039/c5ra25590b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Redox-facilitated self-polymerization can be performed with 5,6-dihydroxy-1H-benzimidazole to generate materials analogous to polydopamine, proving the possibility to expand the catecholamine-based chemistry to N-heterocyclic catechol derivatives.
Collapse
Affiliation(s)
- Ka Wai Fan
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- The University of New South Wales
- Kensington
- Australia
| | | | - Peter Ellersdorfer
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- The University of New South Wales
- Kensington
- Australia
| | - Anthony M. Granville
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- The University of New South Wales
- Kensington
- Australia
| |
Collapse
|
8
|
Manini P, Criscuolo V, Ricciotti L, Pezzella A, Barra M, Cassinese A, Crescenzi O, Maglione MG, Tassini P, Minarini C, Barone V, d'Ischia M. Melanin-Inspired Organic Electronics: Electroluminescence in Asymmetric Triazatruxenes. Chempluschem 2015; 80:919-927. [PMID: 31973255 DOI: 10.1002/cplu.201402444] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Indexed: 11/08/2022]
Abstract
The oxidative polymerization of 5,6-dihydroxyindoles and related hydroxyindoles at pH<3 is diverted from the usual eumelanin-forming pathway to produce mixtures of symmetric and asymmetric triazatruxenes (TATs), which could be separated and characterized for their opto-electronic properties with the aid of TD-DFT calculations. Data showed that the asymmetric isomers exhibit higher fluorescence quantum efficiencies, lower HOMO-LUMO gaps, better film homogeneity, and a more definite aggregation behavior than the symmetric counterparts, suggesting promising applications in organic electronics. The enhanced luminance exhibited by the OLED devices fabricated with blends of the synthesized TATs in poly-9-vinylcarbazole confirmed the potential of the asymmetric skeleton as new versatile platform for light-emitting materials.
Collapse
Affiliation(s)
- Paola Manini
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126 Naples (Italy), Fax: (+39) 081674393
| | - Valeria Criscuolo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126 Naples (Italy), Fax: (+39) 081674393.,Laboratory of Nanomaterials and Devices, ENEA C.R. Portici, Piazzale E. Fermi 1, 80055 Portici, Naples (Italy)
| | - Laura Ricciotti
- Department of Technology, University Parthenope of Naples, Centro Direzionale Isola C4, 80143 Naples (Italy)
| | - Alessandro Pezzella
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126 Naples (Italy), Fax: (+39) 081674393
| | - Mario Barra
- CNR-SPIN and Dept. of Physics, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples (Italy)
| | - Antonio Cassinese
- CNR-SPIN and Dept. of Physics, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples (Italy)
| | - Orlando Crescenzi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126 Naples (Italy), Fax: (+39) 081674393
| | - Maria Grazia Maglione
- Laboratory of Nanomaterials and Devices, ENEA C.R. Portici, Piazzale E. Fermi 1, 80055 Portici, Naples (Italy)
| | - Paolo Tassini
- Laboratory of Nanomaterials and Devices, ENEA C.R. Portici, Piazzale E. Fermi 1, 80055 Portici, Naples (Italy)
| | - Carla Minarini
- Laboratory of Nanomaterials and Devices, ENEA C.R. Portici, Piazzale E. Fermi 1, 80055 Portici, Naples (Italy)
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa (Italy)
| | - Marco d'Ischia
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126 Naples (Italy), Fax: (+39) 081674393
| |
Collapse
|
9
|
Fan KW, Roberts JJ, Martens PJ, Stenzel MH, Granville AM. Copolymerization of an indazole ligand into the self-polymerization of dopamine for enhanced binding with metal ions. J Mater Chem B 2015; 3:7457-7465. [DOI: 10.1039/c5tb01150g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and mussel-inspired polymerization of a new catechol monomer. The generated copolymer exhibits enhanced metal binding, due to the ligand nature of the new monomer, compared to polydopamine homopolymer.
Collapse
Affiliation(s)
- Ka Wai Fan
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW
- Australia
| | | | | | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design
- School of Chemistry
- UNSW
- Australia
| | - Anthony M. Granville
- Centre for Advanced Macromolecular Design
- School of Chemical Engineering
- UNSW
- Australia
| |
Collapse
|
10
|
d’Ischia M, Napolitano A, Ball V, Chen CT, Buehler MJ. Polydopamine and eumelanin: from structure-property relationships to a unified tailoring strategy. Acc Chem Res 2014; 47:3541-50. [PMID: 25340503 DOI: 10.1021/ar500273y] [Citation(s) in RCA: 370] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONSPECTUS: Polydopamine (PDA), a black insoluble biopolymer produced by autoxidation of the catecholamine neurotransmitter dopamine (DA), and synthetic eumelanin polymers modeled to the black functional pigments of human skin, hair, and eyes have burst into the scene of materials science as versatile bioinspired functional systems for a very broad range of applications. PDA is characterized by extraordinary adhesion properties providing efficient and universal surface coating for diverse settings that include drug delivery, microfluidic systems, and water-treatment devices. Synthetic eumelanins from dopa or 5,6-dihydroxyindoles are the focus of increasing interest as UV-absorbing agents, antioxidants, free radical scavengers, and water-dependent hybrid electronic-ionic semiconductors. Because of their peculiar physicochemical properties, eumelanins and PDA hold considerable promise in nanomedicine and bioelectronics, as they are biocompatible, biodegradable, and exhibit suitable mechanical properties for integration with biological tissues. Despite considerable similarities, very few attempts have so far been made to provide an integrated unifying perspective of these two fields of technology-oriented chemical research, and progress toward application has been based more on empirical approaches than on a solid conceptual framework of structure-property relationships. The present Account is an attempt to fill this gap. Following a vis-à-vis of PDA and eumelanin chemistries, it provides an overall view of the various levels of chemical disorder in both systems and draws simple correlations with physicochemical properties based on experimental and computational approaches. The potential of large-scale simulations to capture the macroproperties of eumelanin-like materials and their hierarchical structures, to predict the physicochemical properties of new melanin-inspired materials, to understand the structure-property-function relationships of these materials from the bottom up, and to design and optimize materials to achieve desired properties is illustrated. The impact of synthetic conditions on melanin structure and physicochemical properties is systematically discussed for the first time. Rational tailoring strategies directed to critical control points of the synthetic pathways, such as dopaquinone, DAquinone, and dopachrome, are then proposed, with a view to translating basic chemical knowledge into practical guidelines for material manipulation and tailoring. This key concept is exemplified by the recent demonstration that varying DA concentration, or using Tris instead of phosphate as the buffer, results in PDA materials with quite different structural properties. Realizing that PDA and synthetic eumelanins belong to the same family of functional materials may foster unprecedented synergisms between research fields that have so far been apart in the pursuit of tailorable and marketable materials for energy, biomedical, and environmental applications.
Collapse
Affiliation(s)
- Marco d’Ischia
- Department
of Chemical Sciences, University of Naples Federico II, Via Cintia
4, I-80126 Naples, Italy
| | - Alessandra Napolitano
- Department
of Chemical Sciences, University of Naples Federico II, Via Cintia
4, I-80126 Naples, Italy
| | - Vincent Ball
- Faculty of
Dental Surgery, University of Strasbourg, 8 rue Sainte Elizabeth Strasbourg, FR 67070 Strasbourg, France
- Institut National
de la Santé et de la Recherche Médicale, Unité
Mixte de Recherche 1121 11 rue Humann, 67085 Strasbourg Cedex, France
| | - Chun-Teh Chen
- Department
of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Markus J. Buehler
- Department
of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
11
|
d'Ischia M, Napolitano A, Pezzella A. 5,6‐Dihydroxyindole Chemistry: Unexplored Opportunities Beyond Eumelanin. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100796] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marco d'Ischia
- Department of Organic Chemistry and Biochemistry, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy
| | - Alessandra Napolitano
- Department of Organic Chemistry and Biochemistry, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy
| | - Alessandro Pezzella
- Department of Organic Chemistry and Biochemistry, University of Naples “Federico II”, Via Cintia 4, 80126 Naples, Italy
| |
Collapse
|