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Chahal MK, Liyanage A, Alsaleh AZ, Karr PA, Hill JP, D'Souza F. Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin. Chem Sci 2021; 12:4925-4930. [PMID: 34168764 PMCID: PMC8179616 DOI: 10.1039/d1sc00038a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center. In this push–pull design, the spiro-quinone group acts as a ‘lock’ promoting charge transfer interactions by constraining mutual coplanarity of the meso-phenol-substituted electron-rich Zn(ii) porphyrin and an electron deficient N-heterocycle, as revealed by electrochemical and computational studies. Spectroelectrochemical studies have been used to identify the spectra of charge separated states, and charge separation upon photoexcitation of ZnP has been unequivocally established by using transient absorption spectroscopic techniques covering wide spatial and temporal regions. Further, global target analysis of the transient data using GloTarAn software is used to obtain the lifetimes of different photochemical events and reveal that fluoride anion complexation stabilizes the charge separated state to an appreciable extent. A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center.![]()
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Affiliation(s)
- Mandeep K Chahal
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba Ibaraki 305-0044 Japan
| | - Anuradha Liyanage
- Department of Chemistry, University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Ajyal Z Alsaleh
- Department of Chemistry, University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Paul A Karr
- Department of Physical Sciences and Mathematics, Wayne State College 111 Main Street Wayne Nebraska 68787 USA
| | - Jonathan P Hill
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba Ibaraki 305-0044 Japan
| | - Francis D'Souza
- Department of Chemistry, University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
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2
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Amiri N, Bourguiba M, Guergueb M, Chevreux S, Nasri H. Synthesis, molecular structure, spectroscopic characterization and dielectric properties of new cobalt(II) meso-tetraphenylporphyrin-based coordination complex. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Liu S, Li Y, Hu X, Liu X, Guan B. DFT studies on the ligand effect on electronic and optical properties of three series of functionalized Ir(III) complexes. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Liu B, Shi D, Yang Y, Liu D, Li M, Liu E, Wang X, Zhang Q, Yang M, Li J, Shi X, Wang W, Wei J. Triazacoronene Derivatives with Three peri
-Benzopyrano Extensions: Synthesis, Structure, and Properties. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701386] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Liu
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Donghui Shi
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Yihui Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Dayong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Ming Li
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Ernu Liu
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Xiaogang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Qiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Mingyu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Jing Li
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Xianying Shi
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Wenliang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
| | - Junfa Wei
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, Key Laboratory for Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; 710062 Xi'an Shaanxi Province P. R. China
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5
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Barkley DA, Rokhlenko Y, Marine JE, David R, Sahoo D, Watson MD, Koga T, Osuji CO, Rudick JG. Hexagonally Ordered Arrays of α-Helical Bundles Formed from Peptide-Dendron Hybrids. J Am Chem Soc 2017; 139:15977-15983. [PMID: 29043793 DOI: 10.1021/jacs.7b09737] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Combining monodisperse building blocks that have distinct folding properties serves as a modular strategy for controlling structural complexity in hierarchically organized materials. We combine an α-helical bundle-forming peptide with self-assembling dendrons to better control the arrangement of functional groups within cylindrical nanostructures. Site-specific grafting of dendrons to amino acid residues on the exterior of the α-helical bundle yields monodisperse macromolecules with programmable folding and self-assembly properties. The resulting hybrid biomaterials form thermotropic columnar hexagonal mesophases in which the peptides adopt an α-helical conformation. Bundling of the α-helical peptides accompanies self-assembly of the peptide-dendron hybrids into cylindrical nanostructures. The bundle stoichiometry in the mesophase agrees well with the size found in solution for α-helical bundles of peptides with a similar amino acid sequence.
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Affiliation(s)
- Deborah A Barkley
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Yekaterina Rokhlenko
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06511, United States
| | - Jeannette E Marine
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Rachelle David
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Dipankar Sahoo
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Matthew D Watson
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Tadanori Koga
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States.,Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
| | - Chinedum O Osuji
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06511, United States
| | - Jonathan G Rudick
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
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Lund R, Ang J, Shu JY, Xu T. Understanding Peptide Oligomeric State in Langmuir Monolayers of Amphiphilic 3-Helix Bundle-Forming Peptide-PEG Conjugates. Biomacromolecules 2016; 17:3964-3972. [PMID: 27784156 DOI: 10.1021/acs.biomac.6b01356] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Coiled-coil peptide-polymer conjugates are an emerging class of biomaterials. Fundamental understanding of the coiled-coil oligomeric state and assembly process of these hybrid building blocks is necessary to exert control over their assembly into well-defined structures. Here, we studied the effect of peptide structure and PEGylation on the self-assembly process and oligomeric state of a Langmuir monolayer of amphiphilic coiled-coil peptide-polymer conjugates using X-ray reflectivity (XR) and grazing-incidence X-ray diffraction (GIXD). Our results show that the oligomeric state of PEGylated amphiphiles based on 3-helix bundle-forming peptide is surface pressure dependent, a mixture of dimers and trimers was formed at intermediate surface pressure but transitions into trimers completely upon increasing surface pressure. Moreover, the interhelical distance within the coiled-coil bundle of 3-helix peptide-PEG conjugate amphiphiles was not perturbed under high surface pressure. Present studies provide valuable insights into the self-assembly process of hybrid peptide-polymer conjugates and guidance to develop biomaterials with controlled multivalency of ligand presentation.
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Affiliation(s)
- Reidar Lund
- Department of Materials Science and Engineering, University of California, Berkeley 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, United States
| | - JooChuan Ang
- Department of Materials Science and Engineering, University of California, Berkeley 94720, United States
| | - Jessica Y Shu
- Department of Materials Science and Engineering, University of California, Berkeley 94720, United States
| | - Ting Xu
- Department of Materials Science and Engineering, University of California, Berkeley 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, United States.,Department of Chemistry, University of California, Berkeley 94720, United States
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7
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Liu Q, Zhang X, Zeng W, Wang J, Zhou Z. Origin of d-π Interaction in Cobalt(II) Porphyrins under Synergistic Effects of Core Contraction and Axial Ligation: Implications for a Ligand Effect of Natural Distorted Tetrapyrrole. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600226] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Yang B, Huang S, Zhong J, Zhang H. A comparison of excited state properties between two different N-heterocyclic platinum(II) complexes. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Shang X, Han D, Zhou L, Wan N, Zhang G. Theoretical studies on the substituent effect on the photophysical properties of two series of heteroleptic Ir(III) complexes. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.06.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Amdursky N. Electron Transfer across Helical Peptides. Chempluschem 2015; 80:1075-1095. [DOI: 10.1002/cplu.201500121] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/06/2015] [Indexed: 02/05/2023]
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11
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Olivier JH, Bai Y, Uh H, Yoo H, Therien MJ, Castellano FN. Near-Infrared-to-Visible Photon Upconversion Enabled by Conjugated Porphyrinic Sensitizers under Low-Power Noncoherent Illumination. J Phys Chem A 2015; 119:5642-9. [DOI: 10.1021/acs.jpca.5b03199] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jean-Hubert Olivier
- Department of Chemistry,
French Family Science Center, 124 Science Drive, Duke University, Durham, North Carolina 27708-0346, United States
| | - Yusong Bai
- Department of Chemistry,
French Family Science Center, 124 Science Drive, Duke University, Durham, North Carolina 27708-0346, United States
| | - Hyounsoo Uh
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Hyejin Yoo
- Department of Chemistry,
French Family Science Center, 124 Science Drive, Duke University, Durham, North Carolina 27708-0346, United States
| | - Michael J. Therien
- Department of Chemistry,
French Family Science Center, 124 Science Drive, Duke University, Durham, North Carolina 27708-0346, United States
| | - Felix N. Castellano
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
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12
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Susumu K, Therien MJ. Design of diethynyl porphyrin derivatives with high near infrared fluorescence quantum yields. J PORPHYR PHTHALOCYA 2015. [DOI: 10.1142/s1088424614501107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A design strategy for (porphinato)zinc-based fluorophores that possess large near infrared fluorescence quantum yields is described. These fluorophores are based on a (5,15-diethynylporphinato)zinc(II) framework and feature symmetric donor or acceptor units appended at the meso-ethynyl positions via benzo[c][1,2,5]thiadiazole moieties. These (5,15-bis(benzo[c][1′,2′,5′]thiadiazol-4′-ylethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (4), (5,15-bis[4′-(N,N-dihexylamino) benzo[c][1′,2′,5′]thiadiazol-7′-ylethynyl]-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (5), (5,15-bis([7′-(4″-n-dodecyloxyphenylethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (6), (5,15-bis([7′-([7″-(4″ ′-n-dodecyloxyphenyl)benzo[c][1″,2″,5″]thiadiazol-4″-yl]ethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (7), 5,15-bis ([7′-(4″-N,N-dihexylaminophenylethynyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (8), and (5,15-bis([7′-(4″-N,N-dihexylaminophenylethenyl)benzo[c][1′,2′,5′]thiadiazol-4′-yl]ethynyl)-10,20-bis[2′,6′-bis(3″,3″-dimethyl-1″-butyloxy)phenyl]porphinato)zinc(II) (9) chromophores possess red-shifted absorption and emission bands that range between 650 and 750 nm that bear distinct similarities to those of the chlorophylls and structurally related molecules. Interestingly, the measured radiative decay rate constants for these emitters track with the integrated oscillator strengths of their respective x-polarized Q-band absorptions, and thus define an unusual family of high quantum yield near infrared fluorophores in which emission intensity is governed by a simple Strickler–Berg dependence.
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Affiliation(s)
- Kimihiro Susumu
- Department of Chemistry, 231 South 34th Street, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Michael J. Therien
- Department of Chemistry, French Family Science Center, 124 Science Drive, Duke University, Durham, NC 27708-0346, USA
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Fry HC, Lehmann A, Sinks LE, Asselberghs I, Tronin A, Krishnan V, Blasie JK, Clays K, DeGrado WF, Saven JG, Therien MJ. Computational de novo design and characterization of a protein that selectively binds a highly hyperpolarizable abiological chromophore. J Am Chem Soc 2013; 135:13914-26. [PMID: 23931685 DOI: 10.1021/ja4067404] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work reports the first example of a single-chain protein computationally designed to contain four α-helical segments and fold to form a four-helix bundle encapsulating a supramolecular abiological chromophore that possesses exceptional nonlinear optical properties. The 109-residue protein, designated SCRPZ-1, binds and disperses an insoluble hyperpolarizable chromophore, ruthenium(II) [5-(4'-ethynyl-(2,2';6',2″-terpyridinyl))-10,20-bis(phenyl)porphinato]zinc(II)-(2,2';6',2″-terpyridine)(2+) (RuPZn) in aqueous buffer solution at a 1:1 stoichiometry. A 1:1 binding stoichiometry of the holoprotein is supported by electronic absorption and circular dichroism spectra, as well as equilibrium analytical ultracentrifugation and size exclusion chromatography. SCRPZ-1 readily dimerizes at micromolar concentrations, and an empirical redesign of the protein exterior produced a stable monomeric protein, SCRPZ-2, that also displayed a 1:1 protein:cofactor stoichiometry. For both proteins in aqueous buffer, the encapsulated cofactor displays photophysical properties resembling those exhibited by the dilute RuPZn cofactor in organic solvent: femtosecond, nanosecond, and microsecond time scale pump-probe transient absorption spectroscopic data evince intensely absorbing holoprotein excited states having large spectral bandwidth that penetrate deep in the near-infrared energy regime; the holoprotein electronically excited triplet state exhibits a microsecond time scale lifetime characteristic of the RuPZn chromophore. Hyper-Rayleigh light scattering measurements carried out at an incident irradiation wavelength of 1340 nm for these holoproteins demonstrate an exceptional dynamic hyperpolarizabilty (β1340 = 3100 × 10(-30) esu). X-ray reflectivity measurements establish that this de novo-designed hyperpolarizable protein can be covalently attached with high surface density to a silicon surface without loss of the cofactor, indicating that these assemblies provide a new approach to bioinspired materials that have unique electro-optic functionality.
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Affiliation(s)
- H Christopher Fry
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States
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15
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Aly SM, Guernon H, Guérin B, Harvey PD. Polyoligopeptides functionalized zinc(II)porphyrins: Step towards artificial hemes. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424611003756] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two new zinc(II)porphyrin oligopeptide conjugates (zinc(II)-5,10,15,20-bis[4-(peptide)- phenyl]porphyrin (5) and -tetrakis[3,5-di(peptide)phenyl]porphyrin (9; peptide = -CH2(CO)Gly-Phe-Ala-CNH2) were prepared using the click chemistry with azides and ethynyl-containing precursors. The spectroscopic signature (S0→S1 and transient T1→Tn absorption, excitation and emission spectra) are typical for zinc(II)porphyrin and shows no perturbation upon anchoring the oligopeptides, whereas some small decreases in the photophysical parameters (𝜏F and ΦF), and larger decrease in T1 lifetimes are noted, which are attributable to the known "loose bolt" effect. The structure for 9 in solution was addressed qualitatively using computer modeling and the comparison of the bimolecular fluorescence quenching rate constants between 5 and 9 using C60 as a photooxidative agent. While 5 exhibits a totally accessible zinc(II)porphyrin unit for a C60 approach, 9 shows a slower quenching rate constant meaning some steric hindrance must be present.
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Affiliation(s)
- Shawkat M. Aly
- Département de chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada
| | - Hannah Guernon
- Département de chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada
| | - Brigitte Guérin
- Centre d'imagerie moléculaire de Sherbrooke (CIMS) and Département of Médecine Nucléaire et de Radiobiologie, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Québec J1H 5N4, Canada
| | - Pierre D. Harvey
- Département de chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada
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Koo J, Park J, Tronin A, Zhang R, Krishnan V, Strzalka J, Kuzmenko I, Fry HC, Therien MJ, Blasie JK. Acentric 2-D ensembles of D-br-A electron-transfer chromophores via vectorial orientation within amphiphilic n-helix bundle peptides for photovoltaic device applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3227-38. [PMID: 22242787 PMCID: PMC3391659 DOI: 10.1021/la205002f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We show that simply designed amphiphilic 4-helix bundle peptides can be utilized to vectorially orient a linearly extended donor-bridge-acceptor (D-br-A) electron transfer (ET) chromophore within its core. The bundle's interior is shown to provide a unique solvation environment for the D-br-A assembly not accessible in conventional solvents and thereby control the magnitudes of both light-induced ET and thermal charge recombination rate constants. The amphiphilicity of the bundle's exterior was employed to vectorially orient the peptide-chromophore complex at a liquid-gas interface, and its ends were tailored for subsequent covalent attachment to an inorganic surface, via a "directed assembly" approach. Structural data, combined with evaluation of the excited state dynamics exhibited by these peptide-chromophore complexes, demonstrate that densely packed, acentrically ordered 2-D monolayer ensembles of such complexes at high in-plane chromophore densities approaching 1/200 Å(2) offer unique potential as active layers in binary heterojunction photovoltaic devices.
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Affiliation(s)
- Jaseung Koo
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
| | - Jaehong Park
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
- Department of Chemistry, Duke University, Durham, NC 27708, U.S.A
| | - Andrey Tronin
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
| | - Ruili Zhang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
| | - Venkata Krishnan
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
| | - Joseph Strzalka
- X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A
| | - Ivan Kuzmenko
- X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A
| | - H. Christopher Fry
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
| | | | - J. Kent Blasie
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, U.S.A
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