Search Results - "TWIEG, Robert J."

Photocyclodehydrofluorination by Li, Zhe, Twieg, Robert J.

“…Mallory‐type photocyclization involves a series of photoreactions of stilbenes, o‐terphenyls and related derivatives, which undergo intramolecular cyclization…”
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Three-dimensional, single-molecule fluorescence imaging beyond the diffraction limit by using a double-helix point spread function by Pavani, Sri Rama Prasanna, Thompson, Michael A, Biteen, Julie S, Lord, Samuel J, Liu, Na, Twieg, Robert J, Piestun, Rafael, Moerner, W.E

“…We demonstrate single-molecule fluorescence imaging beyond the optical diffraction limit in 3 dimensions with a wide-field microscope that exhibits a…”
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Redox‐Triggered Orientational Responses of Liquid Crystals to Chlorine Gas by Szilvási, Tibor, Bao, Nanqi, Nayani, Karthik, Yu, Huaizhe, Rai, Prabin, Twieg, Robert J., Mavrikakis, Manos, Abbott, Nicholas L.

“…Surface‐supported liquid crystals (LCs) that exhibit orientational and thus optical responses upon exposure to ppb concentrations of Cl2 gas are reported…”
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Three-dimensional superresolution colocalization of intracellular protein superstructures and the cell surface in live Caulobacter crescentus by Lew, Matthew D, Lee, Steven F, Ptacin, Jerod L, Lee, Marissa K, Twieg, Robert J, Shapiro, Lucy, Moerner, W. E

“…Recently, single-molecule imaging and photocontrol have enabled superresolution optical microscopy of cellular structures beyond Abbe’s diffraction limit,…”
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A Photoactivatable Push−Pull Fluorophore for Single-Molecule Imaging in Live Cells by Lord, Samuel J, Conley, Nicholas R, Lee, Hsiao-lu D, Samuel, Reichel, Liu, Na, Twieg, Robert J, Moerner, W. E

“…We have reengineered a red-emitting dicyanomethylenedihydrofuran push−pull fluorophore so that it is dark until photoactivated with a short burst of…”
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Enhancing charge mobilities in organic semiconductors by selective fluorination: a design approach based on a quantum mechanical perspective by Maiti, Buddhadev, Schubert, Alexander, Sarkar, Sunandan, Bhandari, Srijana, Wang, Kunlun, Li, Zhe, Geva, Eitan, Twieg, Robert J, Dunietz, Barry D

“…Selective fluorination of organic semiconducting molecules is proposed as a means to achieving enhanced hole mobility. Naphthalene is examined here as a root…”
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Synthesis and Characterization of Novel Bio-Chiral Dopants Obtained from Bio-Betulin Produced by a Fermentation Process by Guimarães, Veridiana, Svanidze, Anastasiia, Guo, Tianyi, Nepal, Pawan, Twieg, Robert, Palffy-Muhoray, Peter, Yokoyama, Hiroshi

“…Cholesteric liquid crystals are frequently produced by the addition of chiral dopants to achiral nematic hosts. We report here the synthesis and performance of…”
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Bright, Red Single-Molecule Emitters: Synthesis and Properties of Environmentally Sensitive Dicyanomethylenedihydrofuran (DCDHF) Fluorophores with Bisaromatic Conjugation by Lu, Zhikuan, Liu, Na, Lord, Samuel J, Bunge, Scott D, Moerner, W. E, Twieg, Robert J

“…A group of new fluorescent dye materials for single-molecule imaging applications, comprised of an amine donor, a π-system consisting of phenyl and thiophene…”
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Photophysical Properties of Acene DCDHF Fluorophores:  Long-Wavelength Single-Molecule Emitters Designed for Cellular Imaging by Lord, Samuel J., Lu, Zhikuan, Wang, Hui, Willets, Katherine A., Schuck, P. James, Lee, Hsiao-lu D., Nishimura, Stefanie Y., Twieg, Robert J., Moerner, W. E.

“…We report the solvatochromic, viscosity-sensitive, and single-molecule photophysics of the fluorophores DCDHF-N-6 and DCDHF-A-6. These molecules are members of…”
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Synthesis and Characterization of New Truxenones for Nonlinear Optical Applications by Sanguinet, Lionel, Williams, Jarrod C, Yang, Zhiyong, Twieg, Robert J, Mao, Guilin, Singer, Kenneth D, Wiggers, Greg, Petschek, Rolfe G

“…The synthesis of several new truxenones and one tris(dicyanomethylene) derivative substituted by different amines at positions 4, 9, and 14 is reported. A…”
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Liquid Crystals with Interfacial Ordering that Enhances Responsiveness to Chemical Targets by Nayani, Karthik, Rai, Prabin, Bao, Nanqi, Yu, Huaizhe, Mavrikakis, Manos, Twieg, Robert J., Abbott, Nicholas L.

“…The development of stimuli‐responsive materials suitable for use in wearable sensors is a key unresolved challenge. Liquid crystals (LCs) are particularly…”
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Nonlinear Optical Chromophores as Nanoscale Emitters for Single-Molecule Spectroscopy by Willets, Katherine A, Nishimura, Stefanie Y, Schuck, P. James, Twieg, Robert J, Moerner, W. E

“…Fluorescence imaging of single molecules at room temperature is a powerful technique for studying complex condensed phase systems and revealing structure and…”
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Multiple ferroelectric nematic phases of a highly polar liquid crystal compound by Saha, Rony, Nepal, Pawan, Feng, Chenrun, Hossain, Md Sakhawat, Fukuto, Masafumi, Li, Ruipeng, Gleeson, James T., Sprunt, Samuel, Twieg, Robert J., Jákli, Antal

“…Ferroelectric nematic liquid crystals represent not only fascinating, fundamental science, but they also hold promise for new technologies including…”
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Small-Molecule Labeling of Live Cell Surfaces for Three-Dimensional Super-Resolution Microscopy by Lee, Marissa K, Rai, Prabin, Williams, Jarrod, Twieg, Robert J, Moerner, W. E

“…Precise imaging of the cell surface of fluorescently labeled bacteria requires super-resolution methods because the size-scale of these cells is on the order…”
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Dispersion of Third‐Harmonic Generation in Organic Cavity Polaritons by Liu, Bin, Crescimanno, Michael, Twieg, Robert J., Singer, Kenneth D.

“…Organic cavity polaritons are bosonic quasiparticles arising from the strong interaction between organic molecular excitons and photons within microcavities…”
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Actuating Liquid Crystals Rapidly and Reversibly by Using Chemical Catalysis by Yu, Huaizhe, Gold, Jake I., Wolter, Trenton J., Bao, Nanqi, Smith, Evangelos, Zhang, Hanyu Alice, Twieg, Robert J., Mavrikakis, Manos, Abbott, Nicholas L.

“…Microtubules and catalytic motor proteins underlie the microscale actuation of living materials, and they have been used in reconstituted systems to harness…”
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Computational Chemistry‐Guided Design of Selective Chemoresponsive Liquid Crystals Using Pyridine and Pyrimidine Functional Groups by Yu, Huaizhe, Szilvási, Tibor, Rai, Prabin, Twieg, Robert J., Mavrikakis, Manos, Abbott, Nicholas L.

“…Computational chemistry‐guided designs of chemoresponsive liquid crystals (LCs) with pyridine or pyrimidine groups that bind to metal‐cation‐functionalized…”
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Diffusion of Lipid-like Single-Molecule Fluorophores in the Cell Membrane by Nishimura, Stefanie Y, Lord, Samuel J, Klein, Lawrence O, Willets, Katherine A, He, Meng, Lu, Zhikuan, Twieg, Robert J, Moerner, W. E

“…The dicyanomethylenedihydrofuran (DCDHF) class of single-molecule fluorophores contains an amine donor and a dicyanomethylenedihydrofuran acceptor linked by a…”
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Diphenyl-1,3,4-oxadiazoles: synthesis and influence of side chain semifluorination and lateral ring fluorination on liquid crystalline properties by Fouad, Farid S., Khairuddean, Melati, Twieg, Robert J.

“…We present the synthesis and liquid crystalline properties of four sets of diphenyl-1,3,4-oxadiazole based compounds (Sets 1-4). The influence of side chain…”
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Minimalist columnar liquid crystals: influence of fluorination on the mesogenic behavior of tetramethoxytriphenylene derivatives by Guragain, Parikshit, Powers, Mitchell, Ellman, Brett, Twieg, Robert J

“…Conventional columnar liquid crystals are almost invariably functionalized with multiple long aliphatic tails. In contrast, the molecule…”
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