Search Results - "Höger, Sigurd"

Shape-Persistent Macrocycles: From Molecules to Materials by Höger, Sigurd

“…Shape‐persistent macrocycles with an interior in the nanometer regime allow the attachment of (functional) side groups at defined positions at the ring. These…”
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From π‑Conjugated Rods to Shape-Persistent Rings, Wheels, and Ladders: The Question of Rigidity by Höger, Sigurd, Lupton, John M.

“…Conspectus Rigid-rod oligomers and polymers are mostly based on (hetero)­aromatic rings connected with each other, either directly or via ethynylene or…”
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Switching between H- and J-type electronic coupling in single conjugated polymer aggregates by Eder, Theresa, Stangl, Thomas, Gmelch, Max, Remmerssen, Klaas, Laux, Dirk, Höger, Sigurd, Lupton, John M., Vogelsang, Jan

“…The aggregation of conjugated polymers and electronic coupling of chromophores play a central role in the fundamental understanding of light and charge…”
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Vibrations Responsible for Luminescence from HJ-Aggregates of Conjugated Polymers Identified by Cryogenic Spectroscopy of Single Nanoparticles by Eder, Theresa, Kraus, Daniel, Höger, Sigurd, Vogelsang, Jan, Lupton, John M

“…A single polymer chain can be thought of as a covalently bound J-aggregate, where the microscopic transition-dipole moments line up to emit in phase. Packing…”
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Time-Resolved Electron Paramagnetic Resonance and Theoretical Investigations of Metal-Free Room-Temperature Triplet Emitters by Matsuoka, Hideto, Retegan, Marius, Schmitt, Lisa, Höger, Sigurd, Neese, Frank, Schiemann, Olav

“…Utilization of triplets is important for preparing organic light-emitting diodes with high efficiency. Very recently, both electrophosphorescence and…”
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Metal-Free OLED Triplet Emitters by Side-Stepping Kasha's Rule by Chaudhuri, Debangshu, Sigmund, Eva, Meyer, Annemarie, Röck, Lisa, Klemm, Philippe, Lautenschlager, Sebastian, Schmid, Agnes, Yost, Shane R., Van Voorhis, Troy, Bange, Sebastian, Höger, Sigurd, Lupton, John M.

“…Keeping it light: Most organic fluorophores do not show useful emission from the triplet excited state. A new class of materials is presented for organic…”
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Picosecond time-resolved photon antibunching measures nanoscale exciton motion and the true number of chromophores by Hedley, Gordon J., Schröder, Tim, Steiner, Florian, Eder, Theresa, Hofmann, Felix J., Bange, Sebastian, Laux, Dirk, Höger, Sigurd, Tinnefeld, Philip, Lupton, John M., Vogelsang, Jan

“…The particle-like nature of light becomes evident in the photon statistics of fluorescence from single quantum systems as photon antibunching. In…”
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Shape-persistent rings and wheels by Höger, Sigurd

“…Shape-persistent macrocycles based on the arylene-ethynylene backbone are synthetically challenging targets that can be obtained in good to high yields either…”
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Homo-FRET in π‑Conjugated Polygons: Intermediate-Strength Dipole–Dipole Coupling Makes Energy Transfer Reversible by Wilhelm, Philipp, Vogelsang, Jan, Höger, Sigurd, Lupton, John M

“…The concept of homo-FRET is often used to describe energy transfer between like chromophores of molecular aggregates such as in π-conjugated polymers…”
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Effect of Conjugation Pathway in Metal-Free Room-Temperature Dual Singlet–Triplet Emitters for Organic Light-Emitting Diodes by Ratzke, Wolfram, Schmitt, Lisa, Matsuoka, Hideto, Bannwarth, Christoph, Retegan, Marius, Bange, Sebastian, Klemm, Philippe, Neese, Frank, Grimme, Stefan, Schiemann, Olav, Lupton, John M, Höger, Sigurd

“…Metal-free dual singlet–triplet organic light-emitting diode (OLED) emitters can provide direct insight into spin statistics, spin correlations and spin…”
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A Liquid-Crystalline Phenylene-Based Shape-Persistent Molecular Spoked Wheel by Idelson, Alissa, Sterzenbach, Christopher, Jester, Stefan-S, Tschierske, Carsten, Baumeister, Ute, Höger, Sigurd

“…Molecular spoked wheels with an all-phenylene backbone and different alkoxy side chain substitution patterns were synthesized using a cobalt-catalyzed [2 + 2 +…”
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A Giant Molecular Spoked Wheel by May, Robert, Jester, Stefan-S, Höger, Sigurd

“…The modular synthesis of a defined, rigid molecular spoked wheel structure with the sum formula C1878H2682 and a diameter of about 12 nm is described. The…”
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Flexible Phenanthracene Nanotubes for Explosive Detection by Rickert, Simon C., Luo, Shao-Xiong Lennon, Bahr, Joshua, Kohn, Julia, Xue, Mantian, Hansen, Andreas, Grimme, Stefan, Jester, Stefan-S., Swager, Timothy M., Höger, Sigurd

“…Phenanthracene nanotubes with arylene-ethynylene-butadiynylene rims and phenanthracene walls are synthesized in a modular bottom-up approach. One of the rims…”
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Exciton Localization in Extended π‑Electron Systems: Comparison of Linear and Cyclic Structures by Thiessen, Alexander, Würsch, Dominik, Jester, Stefan-S, Aggarwal, A. Vikas, Idelson, Alissa, Bange, Sebastian, Vogelsang, Jan, Höger, Sigurd, Lupton, John M

“…We employ five π-conjugated model materials of different molecular shapeoligomers and cyclic structuresto investigate the extent of exciton self-trapping and…”
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Excitation Energy Transfer between bodipy Dyes in a Symmetric Molecular Excitonic Seesaw by Freixas, Victor M, Wilhelm, Philipp, Nelson, Tammie, Hinderer, Florian, Höger, Sigurd, Tretiak, Sergei, Lupton, John M, Fernandez-Alberti, Sebastian

“…We examine the redistribution of energy between electronic and vibrational degrees of freedom that takes place between a π-conjugated oligomer, a…”
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Mesoscopic quantum emitters from deterministic aggregates of conjugated polymers by Stangl, Thomas, Wilhelm, Philipp, Remmerssen, Klaas, Höger, Sigurd, Vogelsang, Jan, Lupto, John M.

“…An appealing definition of the term “molecule” arises from consideration of the nature of fluorescence, with discrete molecular entities emitting a stream of…”
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Synthesis and Arm Dissociation in Molecular Stars with a Spoked Wheel Core and Bottlebrush Arms by Burdyńska, Joanna, Li, Yuanchao, Aggarwal, Anant Vikas, Höger, Sigurd, Sheiko, Sergei S, Matyjaszewski, Krzysztof

“…Unique star-like polymeric architectures composed of bottlebrush arms and a molecular spoked wheel (MSW) core were prepared by atom transfer radical…”
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H‑Aggregation Effects between π‑Conjugated Chromophores in Cofacial Dimers and Trimers: Comparison of Theory and Single-Molecule Experiment by Allolio, Christoph, Stangl, Thomas, Eder, Theresa, Schmitz, Daniela, Vogelsang, Jan, Höger, Sigurd, Horinek, Dominik, Lupton, John M

“…Excited-state interchromophoric couplings in π-conjugated polymers present a daunting challenge to study as their spectroscopic signatures are difficult to…”
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