Matteo Palma

Optimization of SWCNT‐FET Biosensors by Aptamer Engineering and Toehold‐Mediated Strand Displacement

Haosen Miao, Tingting Zheng, Houlin Yu, Gririraj Manoharan et autres

Aptamer-based single-walled carbon nanotube (SWCNT) field-effect transistor (FET) biosensors provide a compact, label-free, and sensitive platform for real-time biomarker detection. To enhance device performance, we employed a truncated DNA aptamer (CSS.3_cut3) with improved conformational switching upon cortisol binding, boosting the sensitivity of …

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Templated growth of perovskite shells on single-walled carbon nanotubes: a solution-processable route towards tailored devices

Gririraj Manoharan, Xuan Li, Stoichko D. Dimitrov, Matteo Palma

), as proof-of-concept systems: the CNTs act as templates for the facile and tunable formation of perovskite nanocrystals. We investigated the structural and electronic properties of the assembled SWCNT heterostructures and demonstrated their integration (from solution) into field-effect transistor device configurations. By …

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Templated assembly of metal nanoparticles on DNA–SWCNT hybrids towards optoelectronic tunability

Zechariah Mengrani, Houlin Yu, Weiying Hong, Devis Di Tommaso et autres

two distinct strategies, utilising DNA as a template and a linker moiety in the controlled assembly of metal sulfide nanoparticles onto single-walled carbon nanotubes.

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DNA‐Iron Oxide Templated Multifunctional Nanocarbon Networks

Graziano Rilievo, Haosen Miao, Aura Cencini, Mary Bortoluzzi et autres

The assembly of hybrid nanocomposites often leads to the emergence of new properties. For example, DNA‐scaffolded colloidal gold can exhibit chiroplasmonic signals, while nanocomposite‐integrated carbon nanotubes display gating properties. Here, we investigate the application of core–shell iron oxide‐DNA nanoparticles as a universal …

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P7 Development of a biochip for dissection of multivalent atherosclerosis signalling

Rachel Smyth, Matteo Palma, Thomas Iskratsch

Introduction Integrins maintain a functional vascular system by mediating ECM adhesion via interactions with ligands.1 Integrin dysfunction can disrupt cell adhesion and influence vascular remodelling in diseases such as atherosclerosis,1 so understanding the underlying signalling mechanisms is important for the development of …

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DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma

Abstract 2D transition metal dichalcogenides (TMDCs) as MoS 2 , possess intrinsic properties, such as ultra‐high surface‐to‐volume ratio, that make them ideal platforms in the construction of heterostructures for the loading and spatial confinement of functional components. A key feature of this …

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Multivalent DNA Origami Enables Single-Molecule Dissection of Integrin αvβ6–Receptor Tyrosine Kinase Crosstalk in Cancer Biology

Tingting Zheng, Lauren Grace Rigby, John F. Marshall, Matteo Palma

Nanoscale organization of integrin-mediated receptor crosstalk is crucial for controlling cellular signaling in cancer biology. Previously, interactions between integrin αvβ6 and receptor tyrosine kinases (RTKs) have been implicated in cancer progression, but the spatial regulatory mechanisms remain undefined. Here, we developed a …

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Crystal Growth Modulation of Tin-Lead Halide Perovskites via Chaotropic Agent

Yueyao Dong, Dong‐Tai Wu, Xuan Li, Robert J. E. Westbrook et autres

Mixed tin-lead (Sn-Pb) halide perovskites, with their tunable bandgaps (1.2-1.4 eV), show great promise for the development of highly efficient all-perovskite tandem solar cells. However, achieving commercial viability and stabilized high efficiency for Sn-Pb perovskite solar cells (PSCs) presents numerous challenges. Among …

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Hetero‐Functionalization of Carbon Nanotubes Termini with Single‐Molecule Control

Weiying Hong, Benjamin Lambert, Zechariah Mengrani, Laurent Cognet et autres

A strategy is presented for the asymmetric chemical functionalization of individual single-walled carbon nanotubes (SWCNTs) termini and their selective conjugation to distinct single moieties, i.e., the formation of bi-functionalized R-CNT-R' heterostructures. This study demonstrates this via the selective covalent attachment of metal …

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DNA-directed assembly of graphene homostructures

Haosen Miao, Kai Chen, Houlin Yu, Muhammad Ali et autres

We present a DNA-directed strategy for the programmable assembly of graphene homostructures, enabled by covalent DNA functionalization of azidated graphene nanosheets. Azidated graphene was synthesized via established electrochemical exfoliation methods and further refined by cascade centrifugation to control flake size and thickness. …

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(Invited) Carbon Nanotubes Heterostructures: Controlling Sidewall Vs Terminal Assembly

Matteo Palma

We will present in-solution chemical strategies for the assembly of single walled carbon nanotube (SWCNT)-based heterostructures. We controlled the selective attachment and growth of inorganic semiconducting nanocrystals, perovskites, and metal nanoparticles on either the termini or the sidewalls of SWCNTs . In …

Tunable Mixed-Dimensional 0D-2D Heterostructures: A DNA Nanotechnology Strategy

Kai Chen, Haosen Miao, Stoichko D. Dimitrov, Matteo Palma

Mixed-dimensional heterostructurescan allow bypassing individual nanomaterials intrinsic limitations towards the development of novel hybrids for different technological applications. Critical to this end is the ability to control the interface of the single components , from their spatial separation to the chemical nature …