Search Results - "Larsen, Delmar"

Photoreceptors Take Charge: Emerging Principles for Light Sensing by Kottke, Tilman, Xie, Aihua, Larsen, Delmar S, Hoff, Wouter D

“…The first stage in biological signaling is based on changes in the functional state of a receptor protein triggered by interaction of the receptor with its…”
Get full text

Correlating structural and photochemical heterogeneity in cyanobacteriochrome NpR6012g4 by Lim, Sunghyuk, Yu, Qinhong, Gottlieb, Sean M., Chang, Che-Wei, Rockwell, Nathan C., Martin, Shelley S., Madsen, Dorte, Lagarias, J. Clark, Larsen, Delmar S., Ames, James B.

“…Phytochrome photoreceptors control plant growth, development, and the shade avoidance response that limits crop yield in highdensity agricultural plantings…”
Get full text

Two-photon brightness of azobenzene photoswitches designed for glutamate receptor optogenetics by Carroll, Elizabeth C., Berlin, Shai, Levitz, Joshua, Kienzler, Michael A., Yuan, Zhe, Madsen, Dorte, Larsen, Delmar S., Isacoff, Ehud Y.

“…Mammalian neurotransmitter-gated receptors can be conjugated to photoswitchable tethered ligands (PTLs) to enable photoactivation, or photoantagonism, while…”
Get full text

Global and target analysis of time-resolved spectra by van Stokkum, Ivo H.M., Larsen, Delmar S., van Grondelle, Rienk

“…In biological/bioenergetics research the response of a complex system to an externally applied perturbation is often studied. Spectroscopic measurements at…”
Get full text

Not All Photoactive Yellow Proteins Are Built Alike: Surprises and Insights into Chromophore Photoisomerization, Protonation, and Thermal Reisomerization of the Photoactive Yellow Protein Isolated from Salinibacter ruber by Mix, L. Tyler, Hara, Miwa, Fuzell, Jack, Kumauchi, Masato, Kaledhonkar, Sandip, Xie, Aihua, Hoff, Wouter D, Larsen, Delmar S

“…We demonstrate that the Halorhodospira halophila (Hhal) photoactive yellow protein (PYP) is not representative of the greater PYP family. The photodynamics of…”
Get full text

Evolution of Physical and Photocatalytic Properties in the Layered Titanates A2Ti4O9 (A = K, H) and in Nanosheets Derived by Chemical Exfoliation by Allen, Mark R, Thibert, Arthur, Sabio, Erwin M, Browning, Nigel D, Larsen, Delmar S, Osterloh, Frank E

“…K2Ti4O9 has been known as a photocatalyst for the oxidation of methanol under UV irradiation. Here we study the evolution of morphology, optical, and…”
Get full text

Dynamic Inhomogeneity in the Photodynamics of Cyanobacterial Phytochrome Cph1 by Kim, Peter W, Rockwell, Nathan C, Martin, Shelley S, Lagarias, J. Clark, Larsen, Delmar S

“…Phytochromes are widespread red/far-red photosensory proteins well known as critical regulators of photomorphogenesis in plants. It is often assumed that…”
Get full text

Sequestering High-Energy Electrons to Facilitate Photocatalytic Hydrogen Generation in CdSe/CdS Nanocrystals by Thibert, Arthur, Frame, F. Andrew, Busby, Erik, Holmes, Michael A, Osterloh, Frank E, Larsen, Delmar S

“…The photocatalytic H2O splitting activities of CdSe and CdSe/CdS core/shell quantum dots are contrasted. CdSe/CdS core/shell quantum dots constructed from 4.0…”
Get full text

Comparison of the Forward and Reverse Photocycle Dynamics of Two Highly Similar Canonical Red/Green Cyanobacteriochromes Reveals Unexpected Differences by Kirpich, Julia S, Chang, Che-Wei, Franse, Jasper, Yu, Qinhong, Escobar, Francisco Velazquez, Jenkins, Adam J, Martin, Shelley S, Narikawa, Rei, Ames, James B, Lagarias, J. Clark, Larsen, Delmar S

“…Cyanobacteriochromes (CBCRs) are cyanobacterial photoreceptors that exhibit photochromism between two states: a thermally stable dark-adapted state and a…”
Get full text

Protonation Heterogeneity Modulates the Ultrafast Photocycle Initiation Dynamics of Phytochrome Cph1 by Kirpich, Julia S, Mix, L. Tyler, Martin, Shelley S, Rockwell, Nathan C, Lagarias, J. Clark, Larsen, Delmar S

“…Phytochrome proteins utilize ultrafast photoisomerization of a linear tetrapyrrole chromophore to detect the ratio of red to far-red light. Femtosecond…”
Get full text

Femtosecond Ligand/Core Dynamics of Microwave-Assisted Synthesized Silicon Quantum Dots in Aqueous Solution by Atkins, Tonya M, Thibert, Arthur, Larsen, Delmar S, Dey, Sanchita, Browning, Nigel D, Kauzlarich, Susan M

“…A microwave-assisted reaction has been developed to produce hydrogen-terminated silicon quantum dots (QDs). The Si QDs were passivated for water solubility via…”
Get full text

Packing Dependent Electronic Coupling in Single Poly(3-hexylthiophene) H- and J‑Aggregate Nanofibers by Martin, Thomas P, Wise, Adam J, Busby, Erik, Gao, Jian, Roehling, John D, Ford, Michael J, Larsen, Delmar S, Moulé, Adam J, Grey, John K

“…Nanofibers (NFs) of the prototype conjugated polymer, poly(3-hexylthiophene) (P3HT), displaying H- and J-aggregate character are studied using temperature- and…”
Get full text

Femtosecond Photodynamics of the Red/Green Cyanobacteriochrome NpR6012g4 from Nostoc punctiforme. 1. Forward Dynamics by Kim, Peter W, Freer, Lucy H, Rockwell, Nathan C, Martin, Shelley S, Lagarias, J. Clark, Larsen, Delmar S

“…Phytochromes are well-known red/far-red photosensory proteins that utilize the photoisomerization of a linear tetrapyrrole (bilin) chromophore to detect the…”
Get full text

Computational and Spectroscopic Characterization of the Photocycle of an Artificial Rhodopsin by Manathunga, Madushanka, Jenkins, Adam J, Orozco-Gonzalez, Yoelvis, Ghanbarpour, Alireza, Borhan, Babak, Geiger, James H, Larsen, Delmar S, Olivucci, Massimo

“…The photocycle of a reversible photoisomerizing rhodopsin mimic (M2) is investigated. This system, based on the cellular retinoic acid binding protein, is…”
Get full text

Femtosecond Photodynamics of the Red/Green Cyanobacteriochrome NpR6012g4 from Nostoc punctiforme. 2. Reverse Dynamics by Kim, Peter W, Freer, Lucy H, Rockwell, Nathan C, Martin, Shelley S, Lagarias, J. Clark, Larsen, Delmar S

“…Phytochromes are red/far-red photosensory proteins that utilize photoisomerization of a linear tetrapyrrole (bilin) chromophore to photoconvert reversibly…”
Get full text

Excited-State Self-Trapping and Ground-State Relaxation Dynamics in Poly(3-hexylthiophene) Resolved with Broadband Pump–Dump–Probe Spectroscopy by Busby, Erik, Carroll, Elizabeth C, Chinn, Erin M, Chang, Lilian, Moulé, Adam J, Larsen, Delmar S

“…Broadband femtosecond transient absorption spectroscopy is used to explore the mechanisms underlying excited-state and ground-state exciton relaxation in…”
Get full text

Ultrafast Spintronics: Dynamics of the Photoisomerization-Induced Spin–Charge Excited-State (PISCES) Mechanism in Spirooxazine-Based Photomagnetic Materials by Jenkins, Adam J, Mao, Ziliang, Kurimoto, Aiko, Mix, L. Tyler, Frank, Natia, Larsen, Delmar S

“…The optical control of spin state is of interest in the development of spintronic materials for data processing and storage technologies. Photomagnetic effects…”
Get full text

Calcium Niobate Semiconductor Nanosheets as Catalysts for Photochemical Hydrogen Evolution from Water by Compton, Owen C, Carroll, Elizabeth C, Kim, Jin Y, Larsen, Delmar S, Osterloh, Frank E

“…We have studied the photochemical water splitting activity of individually dispersed, semiconductor nanosheets derived from the Dion−Jacobsen phase HCa2Nb3O10…”
Get full text

Excitation-Wavelength-Dependent Photocycle Initiation Dynamics Resolve Heterogeneity in the Photoactive Yellow Protein from Halorhodospira halophila by Mix, L. Tyler, Carroll, Elizabeth C, Morozov, Dmitry, Pan, Jie, Gordon, Wendy Ryan, Philip, Andrew, Fuzell, Jack, Kumauchi, Masato, van Stokkum, Ivo, Groenhof, Gerrit, Hoff, Wouter D, Larsen, Delmar S

“…Photoactive yellow proteins (PYPs) make up a diverse class of blue-light-absorbing bacterial photoreceptors. Electronic excitation of the p-coumaric acid…”
Get full text

Second-Chance Forward Isomerization Dynamics of the Red/Green Cyanobacteriochrome NpR6012g4 from Nostoc punctiforme by Kim, Peter W, Freer, Lucy H, Rockwell, Nathan C, Martin, Shelley S, Lagarias, J. Clark, Larsen, Delmar S

“…The primary ultrafast Z-to-E isomerization photodynamics of the phytochrome-related cyanobacteriochrome NpR6012g4 from Nostoc punctiforme was studied by…”
Get full text