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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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2
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Li C, Cho J, Yamada K, Hashizume D, Araoka F, Takezoe H, Aida T, Ishida Y. Macroscopic ordering of helical pores for arraying guest molecules noncentrosymmetrically. Nat Commun 2015; 6:8418. [PMID: 26416086 PMCID: PMC4598726 DOI: 10.1038/ncomms9418] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 08/19/2015] [Indexed: 11/08/2022] Open
Abstract
Helical nanostructures have attracted continuous attention, not only as media for chiral recognition and synthesis, but also as motifs for studying intriguing physical phenomena that never occur in centrosymmetric systems. To improve the quality of signals from these phenomena, which is a key issue for their further exploration, the most straightforward is the macroscopic orientation of helices. Here as a versatile scaffold to rationally construct this hardly accessible structure, we report a polymer framework with helical pores that unidirectionally orient over a large area (∼10 cm(2)). The framework, prepared by crosslinking a supramolecular liquid crystal preorganized in a magnetic field, is chemically robust, functionalized with carboxyl groups and capable of incorporating various basic or cationic guest molecules. When a nonlinear optical chromophore is incorporated in the framework, the resultant complex displays a markedly efficient nonlinear optical output, owing to the coherence of signals ensured by the macroscopically oriented helical structure.
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Affiliation(s)
- Chunji Li
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Joonil Cho
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kuniyo Yamada
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Fumito Araoka
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-S8-42 O-okayama, Meguro, Tokyo 152-8552, Japan
| | - Hideo Takezoe
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-S8-42 O-okayama, Meguro, Tokyo 152-8552, Japan
| | - Takuzo Aida
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yasuhiro Ishida
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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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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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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Svechkarev D, Kolodezny D, Mosquera-Vázquez S, Vauthey E. Complementary surface second harmonic generation and molecular dynamics investigation of the orientation of organic dyes at a liquid/liquid interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13869-13876. [PMID: 25393042 DOI: 10.1021/la503121g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The second-order nonlinear response of two dyes adsorbed at the dodecane/water interface was investigated by surface second harmonic generation (SSHG). These dyes consist of the same chromophoric unit, 2-pyridinyl-5-phenyloxazole, with an alkyl chain located at the two opposite ends. The analysis of the polarization dependence of the SSHG intensity as usually performed points to similar tilt angles of the two dyes with respect to the interface but does not give information on the absolute direction. Molecular dynamics (MD) simulations reveal that both dyes lie almost flat at the interface but have opposite orientations. A refined SSHG data analysis with the width of the orientational distribution yields tilt angles that are in very satisfactory agreement with the MD simulations.
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Affiliation(s)
- Denis Svechkarev
- Department of Physical Chemistry, University of Geneva , 30 quai Ernest-Ansermet, 1211 Geneva, Switzerland
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Gonella G, Dai HL. Second harmonic light scattering from the surface of colloidal objects: theory and applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2588-2599. [PMID: 24171670 DOI: 10.1021/la403570f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Because properties of colloids containing micro- and nano-particles are much influenced by the structure of, and interactions occurring at, the particle surface, it is important to be able to characterize the particle surface in situ and nondestructively. Nonlinear light scattering from colloidal particles has been developed into a powerful and versatile technique for characterizing particle surfaces since the first demonstration of the detection of second harmonic generation from molecules adsorbed on micrometer-sized colloidal particles by Eisenthal and co-workers (Wang, H.; Yan, E. C. Y.; Borguet, E.; Eisenthal, K. B. Second Harmonic Generation from the Surface of Centrosymmetric Particles in Bulk Solution. Chem. Phys. Lett. 1996, 259, 15-20). At present, second harmonic light scattering from the particle surface can be quantitatively described by theoretical models and used to measure the adsorption kinetics, molecular structure, and reaction rates at the surfaces of a variety of micrometer- to nanometer-sized particles, including biological cells.
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Affiliation(s)
- Grazia Gonella
- Department of Chemistry, Temple University , Philadelphia, Pennsylvania 19122, United States
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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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8
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Probing the orientational distribution of dyes in membranes through multiphoton microscopy. Biophys J 2013; 103:907-17. [PMID: 23009840 DOI: 10.1016/j.bpj.2012.08.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 07/23/2012] [Accepted: 08/01/2012] [Indexed: 11/21/2022] Open
Abstract
Numerous dyes are available or under development for probing the structural and functional properties of biological membranes. Exogenous chromophores adopt a range of orientations when bound to membranes, which have a drastic effect on their biophysical behavior. Here, we present a method that employs optical anisotropy data from three polarization-imaging techniques to establish the distribution of orientations adopted by molecules in monolayers and bilayers. The resulting probability density functions, which contain the preferred molecular tilt μ and distribution breadth γ, are more informative than an average tilt angle [φ]. We describe a methodology for the extraction of anisotropy data through an image-processing technology that decreases the error in polarization measurements by about a factor of four. We use this technique to compare di-4-ANEPPS and di-8-ANEPPS, both dipolar dyes, using data from polarized 1-photon, 2-photon fluorescence and second-harmonic generation imaging. We find that di-8-ANEPPS has a lower tilt but the same distributional width. We find the distribution of tilts taken by di-4-ANEPPS in two phospholipid membrane models: giant unilamellar vesicles and water-in-oil droplet monolayers. Both models result in similar distribution functions with average tilts of 52° and 47°, respectively.
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9
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Nayak S, Biedermann PU, Stratmann M, Erbe A. A mechanistic study of the electrochemical oxygen reduction on the model semiconductor n-Ge(100) by ATR-IR and DFT. Phys Chem Chem Phys 2013; 15:5771-81. [DOI: 10.1039/c2cp43909c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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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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Burke LA, Gonella G, Heirtzler F, Dai HL, Jones S, Zubieta J, Roche AJ. A self-assembled, metallo-organic supramolecular frequency doubler. Chem Commun (Camb) 2012; 48:1000-2. [DOI: 10.1039/c2cc16199k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Krishnan V, Tronin A, Strzalka J, Fry HC, Therien MJ, Blasie JK. Control of the orientational order and nonlinear optical response of the "push-pull" chromophore RuPZn via specific incorporation into densely packed monolayer ensembles of an amphiphilic four-helix bundle peptide: characterization of the peptide-chromophore complexes. J Am Chem Soc 2010; 132:11083-92. [PMID: 20698674 DOI: 10.1021/ja1010702] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
"Push-pull" chromophores based on extended pi-electron systems have been designed to exhibit exceptionally large molecular hyperpolarizabilities. We have engineered an amphiphilic four-helix bundle peptide to vectorially incorporate such hyperpolarizable chromophores having a metalloporphyrin moiety, with high specificity into the interior core of the bundle. The amphiphilic exterior of the bundle facilitates the formation of densely packed monolayer ensembles of the vectorially oriented peptide-chromophore complexes at the liquid-gas interface. Chemical specificity designed into the ends of the bundle facilitates the subsequent covalent attachment of these monolayer ensembles onto the surface of an inorganic substrate. In this article, we describe the structural characterization of these monolayer ensembles at each stage of their fabrication for one such peptide-chromophore complex designated as AP0-RuPZn. In the accompanying article, we describe the characterization of their macroscopic nonlinear optical properties.
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Affiliation(s)
- Venkata Krishnan
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Reeve JE, Anderson HL, Clays K. Dyes for biological second harmonic generation imaging. Phys Chem Chem Phys 2010; 12:13484-98. [DOI: 10.1039/c003720f] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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