Publications

Photoexcited and ground-state diradical(oid) character in a triquino[3]radialene
The unusual [3]radialene motif at the centre of triquino[3]radialene permits exceptional electronic conjugation between the three …
Cite Project DOI URL
Photoexcited and ground-state diradical(oid) character in a triquino[3]radialene
Design, Implementation, and Evaluation of Authentic Learning Activities to Introduce Chemistry Students to Systems Thinking through Green Chemistry
Despite chemistry’s recognized importance to multiscale industrial and environmental processes, first-year undergraduate chemistry is …
Cite DOI URL
Design, Implementation, and Evaluation of Authentic Learning Activities to Introduce Chemistry Students to Systems Thinking through Green Chemistry
Chapter One - What did aromaticity ever do for us? A user’s guide to aromatic and antiaromatic molecules
Despite its history as one of the oldest concepts in chemistry, the definition of aromaticity continues to be the subject of debate. …
Cite Project DOI PDF
Chapter One - What did aromaticity ever do for us? A user’s guide to aromatic and antiaromatic molecules
Spectroscopic Manifestations of (Anti)Aromaticity in Oxidized and Reduced Porphyrin and Norcorrole
Abstract Aromaticity and antiaromaticity are foundational principes in organic chemistry, regularly invoked to explain stability, …
Cite Project DOI URL
Spectroscopic Manifestations of (Anti)Aromaticity in Oxidized and Reduced Porphyrin and Norcorrole
Probing the Antiaromaticity and Coordination Chemistry of Bowl-Shaped Zinc(II) Norcorrole
Zinc norcorrole was prepared as its pyridine complex (ZnNc·pyridine) by metalation of freebase norcorrole. The ZnNc·pyridine complex is …
Cite Project Project DOI
Probing the Antiaromaticity and Coordination Chemistry of Bowl-Shaped Zinc(II) Norcorrole
Electronic delocalization in charged macrocycles is associated with global aromaticity
When oxidized, cycloparaphenylenes and porphyrin nanorings can exhibit macrocyclic ring currents which have been used to assign these …
Cite Project DOI
Electronic delocalization in charged macrocycles is associated with global aromaticity
Disentangling global and local ring currents
Magnetic field-induced ring currents in aromatic and antiaromatic molecules cause characteristic shielding and deshielding effects in …
Cite Project DOI
Disentangling global and local ring currents
A straightforward method to quantify the electron-delocalizing ability of π-conjugated molecules
Electronic delocalization is essential to the properties of π-conjugated molecules. We introduce the inter-fragment delocalization …
Cite Project DOI
A straightforward method to quantify the electron-delocalizing ability of π-conjugated molecules
Correspondence on "How Aromatic Are Molecular Nanorings? The Case of a Six-Porphyrin Nanoring"
Cite Project DOI
Correspondence on "How Aromatic Are Molecular Nanorings? The Case of a Six-Porphyrin Nanoring"
Large, Tunable, and Reversible pH Changes by Merocyanine Photoacids
Molecular photoswitches capable of generating precise pH changes will allow pH-dependent processes to be controlled remotely and …
Cite DOI
Large, Tunable, and Reversible pH Changes by Merocyanine Photoacids
From Macrocycles to Quantum Rings: Does Aromaticity Have a Size Limit?
The ring currents of aromatic and antiaromatic molecules are remarkable emergent phenomena. A ring current is a quantum-mechanical …
Cite Project DOI
From Macrocycles to Quantum Rings: Does Aromaticity Have a Size Limit?
Large Faraday Rotation in Optical-Quality Phthalocyanine and Porphyrin Thin Films
The magneto-optical phenomenon known as Faraday rotation involves the rotation of plane-polarized light as it passes through an optical …
Cite Project DOI
Large Faraday Rotation in Optical-Quality Phthalocyanine and Porphyrin Thin Films
Global aromaticity at the nanoscale
Does aromaticity have a size limit? Evidence is presented for global aromaticity in porphyrin nanorings with circuits of up to 162 …
Cite Project DOI
Global aromaticity at the nanoscale
Mechanisms of IR amplification in radical cation polarons
Break down of the Born–Oppenheimer approximation is caused by mixing of electronic and vibrational transitions in the radical cations …
Cite DOI
Mechanisms of IR amplification in radical cation polarons
Time-Resolved Structural Dynamics of Extended π-Electron Porphyrin Nanoring
The design of molecular structures inspired by naturally occuring light harvesting systems has been intensely pursued over the last …
Cite DOI
Time-Resolved Structural Dynamics of Extended π-Electron Porphyrin Nanoring
Probing the orientation of porphyrin oligomers in a liquid crystal solvent – a triplet state electron paramagnetic resonance study
Linear porphyrin oligomers have found various applications as synthetic molecular wires in the context of light harvesting, solar …
Cite DOI
Probing the orientation of porphyrin oligomers in a liquid crystal solvent – a triplet state electron paramagnetic resonance study
Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings
Aromaticity can be a useful concept for predicting the behavior of excited states. Here we show that π-conjugated porphyrin nanorings …
Cite DOI
Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings
Watching Bonds Move in a Large Antiaromatic Ring
In antiaromatic molecules, single and double bonds interconvert via a process called bond-shift valence tautomerization, which is often …
Cite DOI
Watching Bonds Move in a Large Antiaromatic Ring
Janus Graphene: Scalable Self-Assembly and Solution-Phase Orthogonal Functionalization
Orthogonal functionalization of 2D materials by selective assembly at interfaces provides opportunities to create new materials with …
PDF Cite DOI
Janus Graphene: Scalable Self-Assembly and Solution-Phase Orthogonal Functionalization
Global Aromaticity and Antiaromaticity in Porphyrin Nanoring Anions
Doping, through oxidation or reduction, is often used to modify the properties of π-conjugated oligomers. In most cases, the resulting …
Cite DOI
Global Aromaticity and Antiaromaticity in Porphyrin Nanoring Anions
Band Structures of Periodic Porphyrin Nanostructures
Recent progress in the synthesis of π-conjugated porphyrin arrays of different shapes and dimensionalities motivates us to examine the …
Cite DOI
Band Structures of Periodic Porphyrin Nanostructures
A Semiconducting Conjugated Radical Polymer: Ambipolar Redox Activity and Faraday Effect
Investigations of magnetism in electronically coupled polyradicals have largely focused on applications in photonic and magnetic …
Cite DOI
A Semiconducting Conjugated Radical Polymer: Ambipolar Redox Activity and Faraday Effect
Insights into Magneto-Optics of Helical Conjugated Polymers
Materials with magneto-optic (MO) properties have enabled critical fiber-optic applications and highly sensitive magnetic field …
Cite DOI
Insights into Magneto-Optics of Helical Conjugated Polymers
Template-Directed Synthesis of a Conjugated Zinc Porphyrin Nanoball
We report the template-directed synthesis of a π-conjugated 14-porphyrin nanoball. This structure consists of two intersecting …
Cite DOI
Template-Directed Synthesis of a Conjugated Zinc Porphyrin Nanoball
Detection of a weak ring current in a nonaromatic porphyrin nanoring using magnetic circular dichroism
We compare the absorption and magnetic circular dichroism (MCD) spectra of a series of porphyrin oligomers – dimer, tetramer, and …
Cite DOI
Detection of a weak ring current in a nonaromatic porphyrin nanoring using magnetic circular dichroism
Electronic Delocalization in the Radical Cations of Porphyrin Oligomer Molecular Wires
The radical cations of a family of π-conjugated porphyrin arrays have been investigated: linear chains of N = 1–6 porphyrins, a …
Cite DOI
Electronic Delocalization in the Radical Cations of Porphyrin Oligomer Molecular Wires
Quantifying the exchange coupling in linear copper porphyrin oligomers
Linear π-conjugated porphyrin oligomers are of significant current interest due to their potential applications as molecular wires. In …
Cite DOI
Quantifying the exchange coupling in linear copper porphyrin oligomers
Constructive quantum interference in a bis-copper six-porphyrin nanoring
Quantum interference in charge transport is attracting interest with applications in nanoelectronics and quantum computing. Here, the …
Cite DOI
Constructive quantum interference in a bis-copper six-porphyrin nanoring
Aromatic and antiaromatic ring currents in a molecular nanoring
Aromatic and antiaromatic molecules—which have delocalized circuits of [4n + 2] or [4n] electrons, respectively—exhibit ring currents …
Cite DOI
Aromatic and antiaromatic ring currents in a molecular nanoring
Photogenerated triplet states in supramolecular porphyrin ladder assemblies: an EPR study
Introducing bridging ligands such as DABCO to solutions of linear zinc porphyrin oligomers has previously been shown to lead to the …
Cite DOI
Photogenerated triplet states in supramolecular porphyrin ladder assemblies: an EPR study
Harnessing NMR relaxation interference effects to characterise supramolecular assemblies
Solution-state NMR spectroscopy remains the primary method for characterising synthetic supramolecular assemblies. Yet, in their NMR …
Cite DOI
Harnessing NMR relaxation interference effects to characterise supramolecular assemblies
Experimental and computational evaluation of the barrier to torsional rotation in a butadiyne-linked porphyrin dimer
The barrier to torsional rotation in a butadiyne-linked porphyrin dimer has been determined in solution using variable temperature …
Cite DOI
Experimental and computational evaluation of the barrier to torsional rotation in a butadiyne-linked porphyrin dimer
Synthesis of Five-Porphyrin Nanorings by Using Ferrocene and Corannulene Templates
The smallest and most strained member of a family of π-conjugated cyclic porphyrin oligomers was synthesized by using pentapyridyl …
Cite DOI
Synthesis of Five-Porphyrin Nanorings by Using Ferrocene and Corannulene Templates
Excitation wavelength-dependent EPR study on the influence of the conformation of multiporphyrin arrays on triplet state delocalization
Excitation wavelength-dependent EPR and ENDOR reveal localization of the triplet state in twisted conformations of porphyrin oligomers.
Cite DOI
Excitation wavelength-dependent EPR study on the influence of the conformation of multiporphyrin arrays on triplet state delocalization
Transient EPR Reveals Triplet State Delocalization in a Series of Cyclic and Linear π-Conjugated Porphyrin Oligomers
The photoexcited triplet states of a series of linear and cyclic butadiyne-linked porphyrin oligomers were investigated by transient …
Cite DOI
Transient EPR Reveals Triplet State Delocalization in a Series of Cyclic and Linear π-Conjugated Porphyrin Oligomers
Photophysics of Threaded sp-Carbon Chains: The Polyyne is a Sink for Singlet and Triplet Excitation
We have used single-crystal X-ray diffraction and time-resolved UV–NIR–IR absorption spectroscopy to gain insights into the structures …
Cite DOI
Photophysics of Threaded sp-Carbon Chains: The Polyyne is a Sink for Singlet and Triplet Excitation