Janko Hergenhahn
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View article: Synthesis of triple stranded porphyrin nanobelts
Synthesis of triple stranded porphyrin nanobelts Open
Molecular nanobelts are fascinating analogs of carbon nanotubes. Their rigid geometries and strongly coupled π-electrons have the potential to generate a wave function resembling that of a quantum ring. Here, we report the synthesis of tri…
View article: Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions
Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions Open
Diradicals have potential applications in spintronics, molecular electronics, and dynamic nuclear polarization due to their unique electronic structure. Supramolecular diradicals are particularly attractive, as changes in conformation can …
View article: Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions
Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions Open
Diradicals have potential applications in spintronics, molecular electronics, and dynamic nuclear polarization due to their unique electronic structure. Supramolecular diradicals are particularly attractive, as changes in conformation can …
View article: An 18-Porphyrin Nanoring at the Size Limit for Global Aromaticity
An 18-Porphyrin Nanoring at the Size Limit for Global Aromaticity Open
What is the size limit for global aromaticity? How large can a macrocyclic π-system be and still exhibit an aromatic ring current around its circumference? We address this question by investigating a π-conjugated butadiyne-linked 18-porphy…
View article: An 18-porphyrin nanoring at the size limit for global aromaticity
An 18-porphyrin nanoring at the size limit for global aromaticity Open
What is the size limit for global aromaticity? How large can a macrocyclic π-system be and still exhibit an aromatic ring current around its circumference? We address this question by investigating a π-conjugated butadiyne-linked 18-porphy…
View article: Triple Stranded Porphyrin Nanobelts
Triple Stranded Porphyrin Nanobelts Open
Molecular nanobelts are fascinating analogues of carbon nanotubes. Their rigid geometries and strongly coupled π-electrons have the potential to generate a wavefunction resembling that of a quantum ring. Here we report the synthesis of tri…
View article: Radical Anions of Porphyrin Molecular Wires: Delocalization and Dynamics
Radical Anions of Porphyrin Molecular Wires: Delocalization and Dynamics Open
The delocalization length of charge carriers in organic semiconductors influences their mobility and is an important factor in the design of functional materials. Here, we have studied the radical anions of a series of linear and cyclic bu…
View article: Bimolecular Sandwich Aggregates of Porphyrin Nanorings
Bimolecular Sandwich Aggregates of Porphyrin Nanorings Open
Extended π-systems often form supramolecular aggregates, drastically changing their optical and electronic properties. However, aggregation processes can be difficult to characterize or predict. Here, we show that butadiyne-linked 8- and 1…
View article: Charge delocalization and global aromaticity in a partially fused 12-porphyrin nanoring
Charge delocalization and global aromaticity in a partially fused 12-porphyrin nanoring Open
Aromatic and antiaromatic ring currents can reveal global electronic delocalization around the circumference of π-conjugated macrocycles, although these phenomena are poorly understood in large rings. Here, we present the template-directed…
View article: Charge Delocalization and Global Aromaticity in a Partially Fused 12-Porphyrin Nanoring
Charge Delocalization and Global Aromaticity in a Partially Fused 12-Porphyrin Nanoring Open
Aromatic and antiaromatic ring currents can reveal global electronic delocalization around the circumference of pi-conjugated macrocycles, although these phenomena are poorly understood in large rings. Here we present the template-directed…
View article: Template‐Directed Synthesis of Strained <i>meso‐meso</i> ‐Linked Porphyrin Nanorings
Template‐Directed Synthesis of Strained <i>meso‐meso</i> ‐Linked Porphyrin Nanorings Open
Strained macrocycles display interesting properties, such as conformational rigidity, often resulting in enhanced π‐conjugation or enhanced affinity for non‐covalent guest binding, yet they can be difficult to synthesize. Here we use compu…
View article: Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings
Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings Open
Strained macrocycles display interesting properties, such as conformational rigidity, often resulting in enhance π-conjugation or enhanced affinity for non-covalent guest binding, yet they can be difficult to synthesize. Here we use comput…
View article: Template‐Directed Synthesis of Strained <i>meso‐meso</i>‐Linked Porphyrin Nanorings
Template‐Directed Synthesis of Strained <i>meso‐meso</i>‐Linked Porphyrin Nanorings Open
Strained macrocycles display interesting properties, such as conformational rigidity, often resulting in enhanced π‐conjugation or enhanced affinity for non‐covalent guest binding, yet they can be difficult to synthesize. Here we use compu…
View article: Data for: Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings
Data for: Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings Open
Calculated molecular xyz coordinates from molecular dynamics simulations, StrainViz calculations and screening of ligand designs.
View article: Data for: Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings
Data for: Template-Directed Synthesis of Strained meso-meso-Linked Porphyrin Nanorings Open
Calculated molecular xyz coordinates from molecular dynamics simulations, StrainViz calculations and screening of ligand designs.
View article: Bending a Photonic Wire into a Ring
Bending a Photonic Wire into a Ring Open
Natural light harvesting systems absorb sunlight and transfer its energy to the reaction centre, where it is used for photosynthesis. Synthetic chromophore arrays provide useful models for understanding energy migration in these systems. R…