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Browsing Duke Faculty Articles by Duke-affiliated Author

Browsing Duke Faculty Articles by Duke-affiliated Author "Therien, Michael J."

Now showing items 1-10 of 10

Computational Design and Elaboration of a de Novo Heterotetrameric alpha-Helical Protein That Selectively Binds an Emissive Abiological (Porphinato)zinc Chromophore

Therien, Michael (AMER CHEMICAL SOC, 2010)

The first example of a computationally de novo designed protein that binds an emissive abiological chromohore is presented, in which a sophisticated level of cofactor discrimination is pre-engineered. This heterotetrameric, ...
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

Therien, Michael (AMER CHEMICAL SOC, 2010)

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 ...
Excitation of Highly Conjugated (Porphinato)palladium(II) and (Porphinato)platinum(II) Oligomers Produces Long-Lived, Triplet States at Unit Quantum Yield That Absorb Strongly over Broad Spectral Domains of the NIR

Therien, Michael (AMER CHEMICAL SOC, 2010)

Transient dynamical studies of bis[(5 5`-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)palladium(II)] ethyne (PPd2), 5,15-bis{[(5`-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)pal ladium(II))ethynyl} ...
De Novo Design and Molecular Assembly of a Transmembrane Diporphyrin-Binding Protein Complex

Therien, Michael (AMER CHEMICAL SOC, 2010)

The de novo design of membrane proteins remains difficult despite recent advances in understanding the factors that drive membrane protein folding and association. We have designed a membrane protein PRIME (PoRphyrins In ...
Phase Transfer Catalysts Drive Diverse Organic Solvent Solubility of Single-Walled Carbon Nanotubes Helically Wrapped by Ionic, Semiconducting Polymers

Deria, Pravas; Therien, Michael (AMER CHEMICAL SOC, 2010)

Use of phase transfer catalysts such as 18-crown-6 enables ionic, linear conjugated poly(2,6-{1,5-bis(3-propoxysulfonicacidsodiumsalt)}naphthylene]ethynylen e (PNES) to efficiently disperse single-walled carbon nanotubes ...
Plasmon-Induced Electrical Conduction in Molecular Devices

Therien, Michael (AMER CHEMICAL SOC, 2010)

Metal nanoparticles (NPs) respond to electromagnetic waves by creating surface plasmons (SPs), which are localized, collective oscillations of conduction electrons on the NP surface. When interparticle distances are small, ...
Predicting the Frequency Dispersion of Electronic Hyperpolarizabilities on the Basis of Absorption Data and Thomas-Kuhn Sum Rules

Hu, Xiangqian; Xiao, Dequan; Keinan, Shahar; Therien, Michael; Yang, Weitao; Beratan, David (AMER CHEMICAL SOC, 2010)

Successfully predicting the frequency dispersion of electronic hyperpolarizabilities is an unresolved challenge in materials science and electronic structure theory. We show that the generalized Thomas-Kuhn sum rules, ...
Probing polarization and dielectric function of molecules with higher order harmonics in scattering-near-field scanning optical microscopy

Therien, Michael (AMER INST PHYSICS, 2009)

The idealized system of an atomically flat metallic surface [highly oriented pyrolytic graphite (HOPG)] and an organic monolayer (porphyrin) was used to determine whether the dielectric function and associated properties ...
Supermolecular-Chromophore-Sensitized Near-Infrared-to-Visible Photon Upconversion

Nayak, Animesh; Therien, Michael (AMER CHEMICAL SOC, 2010)

Selective near-IR (NIR) excitation (780 nm) of the conjugated supermolecule ruthenium(II) [15-(4'-ethynyl-(2,2';6',2 ''-terpyridinyl))-bis[(5,5',-10,20-di(2',6'-bis(3,3-dimethylbutoxy)pheny l)porphinato)zinc(II)]ethyne][ ...
Tunable Leuko-polymersomes That Adhere Specifically to Inflammatory Markers

Rawson, Jeff; Therien, Michael (AMER CHEMICAL SOC, 2010)

The polymersome, a fully synthetic cell mimetic, is a tunable platform for drug delivery vehicles to detect and treat disease (theranostics). Here, we design a leuko-polymersome, a polymersome with the adhesive properties ...