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Biography

Research interests

Our research objectives lie in the many facets of supramolecular chemistry, a branch of chemistry that is based on principles of self-organization of small molecules in to well define molecular architectures. These interactions use non-covalent methods such as hydrogen bonding, metal coordination, van der Waals forces, hydrophobic forces, electrostatic forces, cation-pi and pi-pi interactions. Theses are some of the forces at play in complex biological systems. In particular, the development of confined chemical environments through self assembly, such as nano-capsules, afford us an opportunity to systematically study molecular interactions under a significantly less imposing and less complex environment than those of biological systems. This knowledge can help facilitate the design of nano-capsules as molecular conduits for targeted delivery of potent drugs to cancer cells for example. The knowledge generated is used in the design of nanocapsules or ‘ligand halos’ for metal nanoparticles as molecular conduits for targeted delivery for therapeutic or diagnostic approaches.

Some important applications may also include molecular self-assembly, molecular recognition, host-guest chemistry, and crystal engineering to list a few. Our research requires a multidisciplinary approach for investigations. More recently, collaborations have made use of a range of calixarene derivatives and their application in the synthesis of nanomaterials (carbon quantum dots (CQD), graphene quantum dots (GQD), Silver-graphene nano-composites, and MXenes, with diverse properties suitable for ion sensing, antimicrobial activity, oil sequestration for example. Our interest in MXenes and Borophene,has diversified our research and collaborations particularly in respect to water treatment and energy storage.

External collaborations

Prof Satheesh Krishnamurthy (Director of Surrey Ion Beam Center, University of Surrey)

Prof Daniel Assumpcao Bertuol (Universidade Federal de Santa Maria, Brazil)

Prof Marianny Y Combariza (Industrial University of Santander, Columbia)

Prof Scott J Dalgarno (Heriot-Watt University)

Prof. Jerry L Atwood (University of Missouri, USA)

 

 

 

Publications

Book Chapter

Organic Nanocapsules (2008)

Journal Article

Surface Engineering of Borophene as Next‐Generation Materials for Energy and Environmental Applications (2025)

Application of layered Nickel/Indium double hydroxide in the highly efficient removal of crystal violet dye from textile effluent (2024)

Efficient Gallium Recovery from Aqueous Solutions Using Polyacrylonitrile Nanofibers Loaded with D2EHPA (2023)

Doped MXenes—A new paradigm in 2D systems: Synthesis, properties and applications (2023)

Outstanding visible light photocatalysis using nano-TiO2 hybrids with nitrogen-doped carbon quantum dots and/or reduced graphene oxide (2023)

Development of Nylon 6 Nanofibers Modified with Cyanex-272 for Cobalt Recovery (2023)

In-situ continuous hydrothermal synthesis of TiO2 nanoparticles on conductive N-doped MXene nanosheets for binder-free li-ion battery anodes (2022)

Surface Functionalized MXenes for Wastewater Treatment—A Comprehensive Review (2022)

Investigating the effect of N-doping on carbon quantum dots structure, optical properties and metal ion screening (2022)

Poly(vinyl chloride)-supported triazoles grafted onto calix[4]arene for chromium ions extraction (2021)

Adenine Quadruplexes Show Surprising Stability: Potential Implications for SARS-CoV-2 (2021)

Continuous hydrothermal flow synthesis of S-functionalised carbon quantum dots for enhanced oil recovery (2021)

Efficient Continuous Hydrothermal Flow Synthesis of Carbon Quantum Dots from a Targeted Biomass Precursor for On−Off Metal Ions Nanosensing (2021)

Vortex fluidic mediated synthesis of TiO2 nanoparticle/MXene composites (2020)

Continuous Hydrothermal Flow Synthesis of Blue-Luminescent, Excitation-Independent N-doped Carbon Quantum Dots as Nanosensors (2020)

Continuous flow vortex fluidic-mediated exfoliation and fragmentation of two-dimensional MXene (2020)

Continuous hydrothermal flow synthesis of graphene quantum dots (2018)

Selective Calixarene-Directed Synthesis of MXene Plates, Crumpled Sheets, Spheres, and Scrolls (2017)

Selective Calixarene Directed Synthesis of MXene Plates, Crumpled Sheets, Spheres and Scrolls (2017)

Rapid synthesis of graphene quantum dots using a continuous hydrothermal flow synthesis approach. (2017)

Calixarene Assisted Rapid Synthesis of Silver-Graphene Nanocomposites with Enhanced Antibacterial Activity (2016)

Protein camouflage in cytochrome c–calixarene complexes (2012)

Magnetism in metal–organic capsules (2010)

A family of double-bowl pseudo metallocalix[6]arene discs (2010)

Dimeric nanocapsule induces conformational change (2010)

Metallo-supramolecular capsules (2008)

Rapid formation of metal–organic nano-capsules gives new insight into the self-assembly process (2008)

Guest and Ligand Behavior in Zinc-Seamed Pyrogallol[4]arene Molecular Capsules (2007)

Ionic dimeric pyrogallol[4]arene capsules (2007)

Robust and stable pyrogallol[4]arene molecular capsules facilitated via an octanuclear zinc coordination belt (2007)

Synthesis and structural characterisation of lower rim halogenated pyrogallol[4]arenes: bi-layers and hexameric nano-capsules (2006)

Procatalytic Ligand Strain. Ionization and Perturbation of 8-Nitroxanthine at the Urate Oxidase Active Site (2005)

Chloromethyl chlorosulfate: a new, catalytic method of preparation and reactions with some nucleophiles (2004)

General Base Catalysis in the Urate Oxidase Reaction: Evidence for a Novel Thr−Lys Catalytic Diad (2003)