Arc Centre of Excellence in Exciton Science (Arc Cash- Maths)

Nonvolatile Resistive Switching in Layered InSe via Electrochemical Cation Diffusion

A Mazumder, T Ahmed, E Mayes, SA Tawfik, SP Russo, MX Low, A Ranjan, S Balendhran, S Walia

2022-04-01

2D materials are increasingly being investigated for their nonvolatile switching properties as a step toward downscaling of core e..

Spectroscopic study of L-DOPA and dopamine binding on novel gold nanoparticles towards more efficient drug-delivery system for Parkinson's disease

N Kalčec, N Peranić, R Barbir, CR Hall, TA Smith, MA Sani, R Frkanec, F Separovic, I Vinković Vrček

2022-03-05

Nano-drug delivery systems may potentially overcome current challenges in the treatment of Parkinson's disease (PD) by enabling ta..

The fuzzy sphere morphology is responsible for the increase in light scattering during the shrinkage of thermoresponsive microgels

E Ponomareva, B Tadgell, M Hildebrandt, M Krüsmann, S Prévost, P Mulvaney, M Karg

2022-01-28

Thermoresponsive microgels undergo a volume phase transition from a swollen state under good solvent conditions to a collapsed sta..

PAH Growth in Flames and Space: Formation of the Phenalenyl Radical

ZD Levey, BA Laws, SP Sundar, K Nauta, SH Kable, G da Silva, JF Stanton, TW Schmidt

2022-01-13

Polycyclic aromatic hydrocarbons (PAHs) are intermediates in the formation of soot particles and interstellar grains. However, the..

Materials design of vertically coupled plasmonic arrays

GE Akinoglu, EM Akinoglu, K Kempa, JA Hutchison

2021-12-21

Plasmonic metasurfaces have important applications in life science, optics, and catalysis. However, their industrial usage is limi..

Acoustic spectral hole-burning in a two-level system ensemble

G Andersson, ALO Bilobran, M Scigliuzzo, MM de Lima, JH Cole, P Delsing

2021-12-01

Microscopic two-level system (TLS) defects at dielectric surfaces and interfaces are among the dominant sources of loss in superco..

Photophysics and spectroscopy of 1,2-Benzazulene

Stephen Awuku, Siobhan J Bradley, Kenneth P Ghiggino, Ronald P Steer, Amy L Stevens, Jonathan M White, Colleen Yeow

2021-12-01

The electronic spectroscopy and photophysics of 1,2-benzazulene (BzAz) have been examined in solution and in thin solid films, wit..

Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers

R O’shea, WJ Kendrick, C Gao, TC Owyong, JM White, KP Ghiggino, WWH Wong

2021-12-01

A series of poly(phenylene-vinylene)-based copolymers are synthesized using the Gilch method incorporating monomers with stericall..

Simulating the fabrication of aluminium oxide tunnel junctions

MJ Cyster, JS Smith, N Vogt, G Opletal, SP Russo, JH Cole

2021-12-01

Aluminium oxide (AlO<inf>x</inf>) tunnel junctions are important components in a range of nanoelectric devices including supercond..

Unusual Alternating Crystallization-Induced Emission Enhancement Behavior in Nonconjugated ω-Phenylalkyl Tropylium Salts

Reece D Crocker, Domenic P Pace, Bolong Zhang, Demelza JM Lyons, Mohan M Bhadbhade, Wallace WH Wong, Khanh Mai Binh, Vinh Nguyen Thanh

2021-11-22

The alternating physical properties, especially melting points, of α,ω-disubstituted n-alkanes and their parent n-alkanes had been..

Singlet exciton dynamics of perylene diimide- And tetracene-based hetero/homogeneous substrates via an ab initio kinetic Monte Carlo model

A Manian, F Campaioli, I Lyskov, JH Cole, SP Russo

2021-11-04

Luminescent solar concentrators (LSCs) are devices that trap a portion of the solar spectrum and funnel it toward photon-harvestin..

Application of Triplet–Triplet Annihilation Upconversion in Organic Optoelectronic Devices: Advances and Perspectives

C Gao, WWH Wong, Z Qin, SC Lo, EB Namdas, H Dong, W Hu

2021-11-01

Organic semiconductor materials have been widely used in various optoelectronic devices due to their rich optical and/or electrica..

Exciton transport in amorphous polymers and the role of morphology and thermalisation

F Campaioli, JH Cole

2021-11-01

Understanding the transport mechanism of electronic excitations in conjugated polymers is key to advancing organic optoelectronic ..

High fluorescence efficiency of intrinsic ligand-free zero-dimensional Cs4PbBr6particles and microcrystals

WL Xu, JM White, KP Ghiggino, TA Smith

2021-10-28

Ligand-free Cs<inf>4</inf>PbBr<inf>6</inf>particles of sub-micron dimensions were fabricated by a simple tip-sonication method sho..

Advances in the Surface Functionalization of Nanodiamonds for Biological Applications: A Review

M Barzegar Amiri Olia, PS Donnelly, LCL Hollenberg, P Mulvaney, DA Simpson

2021-10-22

Nanodiamonds (NDs) represent an emerging class of nanomaterials that have been used for a variety of applications including biosen..

Stability of superconducting resonators: Motional narrowing and the role of Landau-Zener driving of two-level defects

D Niepce, JJ Burnett, M Kudra, JH Cole, J Bylander

2021-09-01

Frequency instability of superconducting resonators and qubits leads to dephasing and time-varying energy loss and hinders quantum..

Localized Wannier function based tight-binding models for two-dimensional allotropes of bismuth

Q Li, JS Smith, Y Yin, C Wang, MV Klymenko, JH Cole, NV Medhekar

2021-06-01

With its monoelemental composition, various crystalline forms and an inherently strong spin-orbit coupling, bismuth has been regar..

Frequency Shift Surface-Enhanced Raman Spectroscopy Sensing: An Ultrasensitive Multiplex Assay for Biomarkers in Human Health

W Zhu, JA Hutchison, M Dong, M Li

2021-05-28

The sensitive and selective detection of biomarkers for human health remains one of the grand challenges of the analytical science..

The role of conformational heterogeneity in the excited state dynamics of linked diketopyrrolopyrrole dimers

SJ Bradley, M Chi, JM White, CR Hall, L Goerigk, TA Smith, KP Ghiggino

2021-04-21

Diketopyrrolopyrrole (DPP) derivatives have been proposed for both singlet fission and energy upconversion as they meet the energe..

Two-dimensional spectroscopy beyond the perturbative limit: The influence of finite pulses and detection modes

A Anda, JH Cole

2021-03-21

Ultra-fast and multi-dimensional spectroscopy gives a powerful looking glass into the dynamics of molecular systems. In particular..

Spectroelectrochemistry of Colloidal CdSe Quantum Dots

A Ashokan, P Mulvaney

2021-02-23

Solution-phase spectroelectrochemistry was used to study electron injection into colloidal CdSe quantum dots (QDs) with sizes rang..

Direct Assembly of Vertically Oriented, Gold Nanorod Arrays

Heyou Zhang, Yawei Liu, Muhammad Faris Shahin Shahidan, Calum Kinnear, Fatemeh Maasoumi, Jasper Cadusch, Eser Metin Akinoglu, Timothy D James, Asaph Widmer-Cooper, Ann Roberts, Paul Mulvaney

2021-02-03

Although many nanoscale materials such as quantum dots and metallic nanocrystals exhibit size dependent optical properties, it has..

NanoNET: An extendable Python framework for semi-empirical tight-binding models

MV Klymenko, JA Vaitkus, JS Smith, JH Cole

2021-02-01

We present a novel open-source Python framework called NanoNET (Nanoscale Non-equilibrium Electron Transport) for modeling electro..

Microwave quantum optics as a direct probe of the Overhauser field in a quantum dot circuit quantum electrodynamics device

PQ Jin, J Jeske, AD Greentree, JH Cole

2021-01-07

We show theoretically that a quantum dot circuit quantum electrodynamics device can be used as a probe of the Overhauser field in ..

Light-induced reversal of ion segregation in mixed-halide perovskites

Wenxin Mao, Christopher R Hall, Stefano Bernardi, Yi-Bing Cheng, Asaph Widmer-Cooper, Trevor A Smith, Udo Bach

2021-01-01

Bandgap instability due to light-induced phase segregation in mixed-halide perovskites presents a major challenge for their future..

Tetraphenylethene 9,10-Diphenylanthracene Derivatives – Synthesis and Photophysical Properties

C Gao, JY Seow, B Zhang, CR Hall, AJ Tilley, JM White, TA Smith, WWH Wong

2019-06-01

A series of tetraphenylethene 9,10-diphenylanthracene (TPE-DPA) derivatives have been synthesized, and their photophysical propert..

A Maleimide-functionalized Tetraphenylethene for Measuring and Imaging Unfolded Proteins in Cells

S Zhang, M Liu, LYF Tan, Q Hong, ZL Pow, TC Owyong, S Ding, WWH Wong, Y Hong

2019-03-15

Collapse of the protein homeostasis (proteostasis) can lead to accumulation and aggregation of unfolded proteins, which has been f..

Molecularly isolated perylene diimides enable both strong exciton-photon coupling and high photoluminescence quantum yield

Randy P Sabatini, Bolong Zhang, Akhil Gupta, Julien Leoni, Wallace WH Wong, Girish Lakhwani

2019-03-14

Strong coupling in organic media holds the promise of efficient room temperature polariton lasing with solution-processed material..

Exciton Dynamics of Photoexcited Pendant Porphyrin Polymers in Solution and in Thin Films

AL Stevens, S Novakovic, JM White, WWH Wong, TA Smith, KP Ghiggino, MF Paige, RP Steer

2018-12-20

Several new polymers with rotatable zinc porphyrin pendants have been synthesized and their optical spectroscopic and photophysica..

Amine-Substituted Diazocine Derivatives – Synthesis, Structure, and Photophysical Properties

MA Gregory, B Zhang, AJ Tilley, T Scheerlinck, JM White, WWH Wong

2018-11-01

A series of amine-substituted diazocines were synthesized in three steps from methyl 2-aminobenzoate or methyl 3-aminonaphtholate...

Direct assembly of large area nanoparticle arrays

H Zhang, J Cadusch, C Kinnear, T James, A Roberts, P Mulvaney

2018-08-28

A major goal of nanotechnology is the assembly of nanoscale building blocks into functional optical, electrical, or chemical devic..

Excitonic processes in porphyrin-based photon upconversion materials

Ken Ghiggino, Sacha Novakovic, Ronald Steer, Jonathan White, Wallace Wong

2018-08-19

Directed Chemical Assembly of Single and Clustered Nanoparticles with Silanized Templates

C Kinnear, J Cadusch, H Zhang, J Lu, TD James, A Roberts, P Mulvaney

2018-06-26

The assembly of nanoscale materials into arbitrary, organized structures remains a major challenge in nanotechnology. Herein, we r..

A water-soluble, AIE-active polyelectrolyte for conventional and fluorescence lifetime imaging of mouse neuroblastoma neuro-2A cells

Y Wang, H Yao, J Zhou, Y Hong, B Chen, B Zhang, TA Smith, WWH Wong, Z Zhao

2018-03-15

A new conjugated polyelectrolyte containing tetraphenylethene units in the backbone is synthesized and characterized. This polyele..

Aggregation-induced emission-mediated spectral downconversion in luminescent solar concentrators

Bolong Zhang, James L Banal, David J Jones, Ben Zhong Tang, Kenneth P Ghiggino, Wallace WH Wong

2018-03-01

The light-harvesting efficiency of luminescent solar concentrators (LSCs) is encumbered by reabsorption of emission and concentrat..

Photophysical and Fluorescence Anisotropic Behavior of Polyfluorene β-Conformation Films

MN Yu, H Soleimaninejad, JY Lin, ZY Zuo, B Liu, YF Bo, LB Bai, YM Han, TA Smith, M Xu, XP Wu, DE Dunstan, RD Xia, LH Xie, DDC Bradley, W Huang

2018-01-18

We demonstrate a systematic visualization of the unique photophysical and fluorescence anisotropic properties of polyfluorene copl..

Highly Fluorescent Pyridinium Betaines for Light Harvesting

J Xu, B Zhang, M Jansen, L Goerigk, WWH Wong, C Ritchie

2017-10-23

We report the findings of our experimental and theoretical investigations into the properties of pyridinium enolates and their pot..

Hoch fluoreszierende Pyridiniumbetaine für die Lichtsammlung

Jingjing Xu, Bolong Zhang, Marina Jansen, Lars Goerigk, Wallace WH Wong, Chris Ritchie

2017-10-23

<jats:title>Abstract</jats:title><jats:p>Die Ergebnisse experimenteller und theoretischer Untersuchungen der Eigenschaften von Pyr..

Highly fluorescent molecularly insulated perylene diimides: Effect of concentration on photophysical properties

B Zhang, H Soleimaninejad, DJ Jones, JM White, KP Ghiggino, TA Smith, WWH Wong

2017-10-10

A series of four perylene diimide (PDI) chromophores were prepared with increasing steric bulk on the imide substituents with the ..

AIE conjugated polyelectrolytes based on tetraphenylethene for efficient fluorescence imaging and lifetime imaging of living cells

M Gao, Y Hong, B Chen, Y Wang, W Zhou, WWH Wong, J Zhou, TA Smith, Z Zhao

2017-07-14

A series of new conjugated polyelectrolytes (CPEs) containing tetraphenylethene units are synthesized and characterized. They show..

Emissive Molecular Aggregates and Energy Migration in Luminescent Solar Concentrators

James L Banal, Bolong Zhang, David J Jones, Kenneth P Ghiggino, Wallace WH Wong

2017-01-17

Luminescent solar concentrators (LSCs) are light harvesting devices that are ideally suited to light collection in the urban envir..

Determinants of the efficiency of photon upconversion by triplet-triplet annihilation in the solid state: Zinc porphyrin derivatives in PVA

R Rautela, NK Joshi, S Novakovic, WWH Wong, JM White, KP Ghiggino, MF Paige, RP Steer

2017-01-01

Spectroscopic, photophysical and computational studies designed to expose and explain the differences in the efficiencies of non-c..

Energy Migration in Organic Solar Concentrators with a Molecularly Insulated Perylene Diimide

JL Banal, H Soleimaninejad, FM Jradi, M Liu, JM White, AW Blakers, MW Cooper, DJ Jones, KP Ghiggino, SR Marder, TA Smith, WWH Wong

2016-06-23

Maintaining high incident light absorption while minimizing luminescence reabsorption is a key challenge for organic luminescent s..