Ullrich Scherf
YOU?
Author Swipe
View article: Polyterrylenes: synthesis and regioregularity effect on p-type charge transport and deep-red light photodetection in OFETs
Polyterrylenes: synthesis and regioregularity effect on p-type charge transport and deep-red light photodetection in OFETs Open
Dibromo derivatives of bay-substituted terrylene and polyterrylenes, were synthesized for the first time. Polyterrylenes were employed in OFET and OPT, demonstrated better mobility and photodetection in the deep-red region compared to the …
View article: Photoinduced Radical Cations Enable Anti‐Kasha Emission in a Pyrene‐Based Azacationic Ladder Polymer
Photoinduced Radical Cations Enable Anti‐Kasha Emission in a Pyrene‐Based Azacationic Ladder Polymer Open
Conjugated ladder polymers are a unique class of macromolecules, characterized by their rigid and thermally stable structures. This work presents the synthesis and characterization of a pyrene‐based azacationic ladder polymer (polymer A). …
View article: Integrated array of coupled exciton–polariton condensates
Integrated array of coupled exciton–polariton condensates Open
A central challenge for advancing polariton-based circuits is the controlled and scalable coupling of individual condensates. Existing approaches based on etched or epitaxially grown microcavities are fabrication-intensive and restrict in-…
View article: <i>In situ</i> tunneling control in photonic potentials by Rashba–Dresselhaus spin–orbit coupling
<i>In situ</i> tunneling control in photonic potentials by Rashba–Dresselhaus spin–orbit coupling Open
The control over individual tunneling amplitudes in photonic lattices is highly desirable for photonic Hamiltonian engineering. In this work, we demonstrate the in situ control of tunneling between individual sites patterned inside an opti…
View article: In situ tunable, room-temperature polariton condensation in individual states of a 1D topological lattice
In situ tunable, room-temperature polariton condensation in individual states of a 1D topological lattice Open
Exciton-polariton microcavity arrays have emerged as a promising semiconductor-based platform for analog simulations of model Hamiltonians and topological effects. To study a variety of Hamiltonians and investigate their properties, it is …
View article: Coherent Control of Single Molecules via Phase-Shaped Two-Photon Excitation at Room Temperature
Coherent Control of Single Molecules via Phase-Shaped Two-Photon Excitation at Room Temperature Open
Coherent control has been achieved in atoms and small molecules in gas phase during the past few decades. An intriguing demonstration of coherent control is a so-called “dark pulse” that cancels 2-photon transition probabilities despite ex…
View article: Electropolymerization of a New Diketopyrrollopyrrole Derivative into Inherent Chiral Polymer Films
Electropolymerization of a New Diketopyrrollopyrrole Derivative into Inherent Chiral Polymer Films Open
Electropolymerization is a convenient way to obtain conducting polymers (CPs) directly adhered to an electrode surface. CPs are well-known for their various application fields in photovoltaic cells, chemical sensors, and electronics. By im…
View article: In-situ tunneling control in photonic potentials by Rashba-Dresselhaus spin-orbit coupling
In-situ tunneling control in photonic potentials by Rashba-Dresselhaus spin-orbit coupling Open
The tunability of individual coupling amplitudes in photonic lattices is highly desirable for photonic Hamiltonian engineering and for studying topological transitions in situ. In this work, we demonstrate the tunneling control between ind…
View article: Temporal bandwidth of consecutive polariton condensation
Temporal bandwidth of consecutive polariton condensation Open
The advent of organic polaritonics has led to the realisation of all-optical transistors, logic gates, and single photon-switches operating at room temperature. In this Letter, we develop a microscopic theory accounting for thermalisation,…
View article: Observation of a supersolid phase in a spin-orbit coupled exciton-polariton Bose-Einstein condensate at room temperature
Observation of a supersolid phase in a spin-orbit coupled exciton-polariton Bose-Einstein condensate at room temperature Open
In Bose-Einstein condensates (BEC), spin-orbit coupling (SOC) produces supersolidity. It is a peculiar state of matter, which, in addition to the superfluid behaviour shows periodic density modulation typical for crystals. Here, we report …
View article: Two Regioisomeric Ladder Polymers with a Fully Conjugated or Cross-Conjugated Polyacene-Type Skeleton
Two Regioisomeric Ladder Polymers with a Fully Conjugated or Cross-Conjugated Polyacene-Type Skeleton Open
Two regioisomeric ladder polymers with a fully conjugated or cross-conjugated polyacene-type skeleton have been made by combining transition-metal-catalyzed aryl–aryl coupling and dehydrating post-polymerization cyclization. The regioisome…
View article: Room temperature, cascadable, all-optical polariton universal gates
Room temperature, cascadable, all-optical polariton universal gates Open
Today, almost all information processing is performed using electronic logic circuits operating at several gigahertz frequency. All-optical logic holds the promise to allow for up to three orders of magnitude higher speed. Whereas essentia…
View article: Temporal mode switching during polariton condensation
Temporal mode switching during polariton condensation Open
View article: In-situ tunable, room-temperature polariton condensation in individual states of a 1D topological lattice
In-situ tunable, room-temperature polariton condensation in individual states of a 1D topological lattice Open
In recent years, exciton-polariton microcavity arrays have emerged as a promising semiconductor-based platform for analogue simulations of model Hamiltonians and topological effects. To realize experimentally a variety of Hamiltonians and …
View article: Integrated, ultrafast all-optical polariton transistors with sub-wavelength grating microcavities
Integrated, ultrafast all-optical polariton transistors with sub-wavelength grating microcavities Open
All-optical logic has the potential to overcome the operation speed barrier that has persisted in electronic circuits for two decades. However, the development of scalable architectures has been prevented so far by the lack of materials wi…
View article: Microporous Polymer-Modified Glassy Carbon Electrodes for the Electrochemical Detection of Metronidazole: Experimental and Theoretical Insights
Microporous Polymer-Modified Glassy Carbon Electrodes for the Electrochemical Detection of Metronidazole: Experimental and Theoretical Insights Open
The persistence and potential toxicity of emergent pollutants pose significant threats to biodiversity and human health, emphasizing the need for sensors capable of detecting these pollutants at extremely low concentrations before treatmen…
View article: Chain‐Length Dependence of the Optical Activity of Helical Triptycene‐Based <i>π</i>‐Conjugated Ladder Polymers
Chain‐Length Dependence of the Optical Activity of Helical Triptycene‐Based <i>π</i>‐Conjugated Ladder Polymers Open
Helical ladder polymers are designed by connecting planar indenofluorene chromophores by chiral triptycene linkers. The resulting hexagonal helices exhibit a substantial degree of homoconjugation across the triptycene knots, with saturatio…
View article: Coordination of Tetracyanoquinodimethane-Derivatives with Tris(pentafluorophenyl)borane Provides Stronger p-Dopants with Enhanced Stability
Coordination of Tetracyanoquinodimethane-Derivatives with Tris(pentafluorophenyl)borane Provides Stronger p-Dopants with Enhanced Stability Open
Strong molecular dopants for organic semiconductors that are stable against diffusion are in demand, enhancing the performance of organic optoelectronic devices. The conventionally used p-dopants based on 7,7,8,8-tetracyanoquinodimethane (…
View article: Statement of Peer Review
Statement of Peer Review Open
In submitting conference proceedings to Materials Proceedings, the volume editors of the proceedings certify to the publisher that all papers published in this volume have been subjected to peer review administered by the volume edi…
View article: Influence of Backbone Ladderization and Side Chain Variation on the Orientation of Diketopyrrolopyrrole-Based Donor-Acceptor Copolymers
Influence of Backbone Ladderization and Side Chain Variation on the Orientation of Diketopyrrolopyrrole-Based Donor-Acceptor Copolymers Open
Ladder polymers with poly(diketopyrrolopyrrole) (DPP) moieties have recently attracted enormous interest for a large variety of opto-electronic applications. Since the rigidity of the backbone increases with ladderization, a strong influen…
View article: Ultrafast Optical Control of Polariton Energy in an Organic Semiconductor Microcavity
Ultrafast Optical Control of Polariton Energy in an Organic Semiconductor Microcavity Open
The manipulation of exciton–polaritons and their condensates is of great interest due to their applications in polariton simulators and high‐speed, all‐optical logic devices. Until now, methods of trapping and manipulating such condensates…
View article: The Influence of the Side Chain Structure on the Photostability of Low Band Gap Polymers
The Influence of the Side Chain Structure on the Photostability of Low Band Gap Polymers Open
Side chains play an important role in the photo-oxidation process of low band gap (LBG) polymers. For example, it has been shown that their photostability can be increased by the introduction of aromatic-oxy-alkyl links. We studied the pho…
View article: CCDC 2195804: Experimental Crystal Structure Determination
CCDC 2195804: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Ultrafast optical control of polariton energy in an organic semiconductor microcavity
Ultrafast optical control of polariton energy in an organic semiconductor microcavity Open
The manipulation of exciton-polaritons and their condensates is of great interest due to their applications in polariton simulators and high-speed, all-optical logic devices. Until now, methods of trapping and manipulating such condensates…
View article: Conjugated Polymers: Where We Come From, Where We Stand, and Where We Might Go
Conjugated Polymers: Where We Come From, Where We Stand, and Where We Might Go Open
View article: Thin Polymer Films by Oxidative or Reductive Electropolymerization and Their Application in Electrochromic Windows and Thin-Film Sensors
Thin Polymer Films by Oxidative or Reductive Electropolymerization and Their Application in Electrochromic Windows and Thin-Film Sensors Open
Electrically conducting and semiconducting polymers represent a special and still very attractive class of functional chromophores, especially due to their unique optical and electronic properties and their broad device application potenti…
View article: Organic copolymer lasing from single defect microcavity fabricated using laser patterning
Organic copolymer lasing from single defect microcavity fabricated using laser patterning Open
This study uses a laser patterning setup to write defect structures into a conjugated polymer microcavity. We show that the defect enhances optical confinement and reduces the lasing threshold.
View article: Influence of the Side Chain Structure on the Electronic Structure and Self-Organization Properties of Low Band Gap Polymers
Influence of the Side Chain Structure on the Electronic Structure and Self-Organization Properties of Low Band Gap Polymers Open
The properties of low band gap polymers in devices such as solar cells are strongly influenced by their morphology and ability of self-organization in thin films and interface properties. We study the influence of alkyl and alkoxy side cha…
View article: Conjugated Polymers: Where We Come From, Where We Stand, and Where We Might Go
Conjugated Polymers: Where We Come From, Where We Stand, and Where We Might Go Open
Conjugated polymers (CPs) are electronic materials which always attract the joint attention of synthetic chemistry, physics, and engineering. The present article deals with “classical” CPs such as polyacetylenes and polyarylenes, and also …
View article: Circularly Polarized Light Probes Excited‐State Delocalization in Rectangular Ladder‐type Pentaphenyl Helices
Circularly Polarized Light Probes Excited‐State Delocalization in Rectangular Ladder‐type Pentaphenyl Helices Open
Ladder‐type pentaphenyl chromophores have a rigid, planar π‐system and show bright fluorescence featuring pronounced vibrational structure. Such moieties are ideal for studying interchromophoric interactions and delocalization of electroni…