About
60
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Introduction
I currently work at Nagoya University, at the Institute of Materials and Systems for Sustainability, as an invited professor. My original affiliation is with the Joining and Welding Research Institute at Osaka University. I specialize in the covalent functionalization and characterization of various nanomaterials, providing applications in different areas such as nanotechnology or energy conversion.
Current institution
Additional affiliations
January 2022 - present
Position
- Asistant Professor
Description
- nanomaterials functionalization Characterization Applications
October 2021 - January 2024
Position
- PostDoc Position
Description
- National founding fellowship for the functionalization of nanomaterials
October 2015 - October 2019
Position
- PhD Student
Description
- Functionalization of graphene and 2D materials
Publications
Publications (60)
Low-dimensional carbon allotropes belong to the most revolutionary materials of the last decades. The latest materialization of confined carbyne, a linear chain of sp1-hybridized carbon encapsulated inside a small-diameter carbon nanotube host, is one extraordinary nano-engineering example. Inspired by these hybrid structures, in this work, we demo...
This study investigates the optical and electronic properties of eight two-dimensional transition metal chalcogenides (TMDs)—MoS2, WS2, MoSe2, WSe2, MoTe2, WTe2, MoO2, and WO2—covalently functionalized with perylene, forming zero-dimensional/two-dimensional hybrid materials....
Mechanical exfoliation of layered materials is one of the most effective methods for obtaining two-dimensional (2D) nanosheets. However, this approach is still limited to van der Waals (vdW) layered materials, where interlayer interactions are governed by weak vdW forces. In this study, we used a layered perovskite ferroelectric (CsPb2Nb3O10) as a...
A new Pb-based perovskite ferroelectric (CsPb 2 Nb 3 O 10 ) provides a novel platform for investigating ferroelectric properties in 3D and 2D forms.
In this study we develop a strategy to insulate 6,6 ‐Phenyl C61 butyric acid methyl ester (PCBM) on the basal plane of transition metal dichalcogenides (TMDs). Concretely single layers of MoS2, MoSe2, MoTe2, WS2, WSe2 and WTe2 and ultrathin MoO2 and WO2 were grown via chemical vapor deposition (CVD). Then, the thiol group of a PCBM modified with cy...
Transition metal dichalcogenides (TMDs) are promising 2D nanomaterials for diverse applications, but their intrinsic chemical inertness hinders their modification. Herein, a novel approach is presented for the photocatalytic acylation of 2H‐MoS2 and 2H‐MoSe2, utilizing tetrabutyl ammonium decatungstate ((nBu4N)4W10O32) polyoxometalate complex as a...
We deposit azafullerene C59N• radicals in a vacuum on the Au(111) surface for layer thicknesses between 0.35 and 2.1 monolayers (ML). The layers are characterized using X-ray photoemission (XPS) and X-ray absorption fine structure (NEXAFS) spectroscopy, low-temperature scanning tunneling microscopy (STM), and by density functional calculations (DFT...
Whilst technical textile requirements for personal protecting clothing have dramatically increased during the past years due to the climate and health crisis, as well as the human factor, garment industry is in search of new fabrics that will meet these emerging needs. Aiming in the realization of superior fabrics performing under extreme environme...
2D Transition metal dichalcogenides (TMDs) and their unique chemistry have flourished in the recent years owing to their pertinence in a broad series of front-row applications including electronic, opto-epectronic and energy storage /harvest devices for the semiconductors, 1, 2 while also catalysis and photo /electrothermal applications for the met...
Aramid materials, such as Kevlar® and Nomex®, are aromatic polyamides exhibiting excellent chemical and mechanical properties. Because of their demanding applications, it is essential to enhance their water repellency, their endurance to UV radiation, as well as their antibacterial properties, while simultaneously preserving or even strengthening t...
This work describes a multi‐step modification process for the covalent transformation of Kevlar fabric en route to the incorporation of graphene oxide (GO) nanosheets. Spectroscopic, thermal and microscopy imaging techniques have been employed to follow step‐by‐step the modification of Kevlar and the formation of the corresponding Kevlar‐GO hybrid...
van der Waals (vdW) heterostructures, which can be assembled with various two-dimensional materials, provide a versatile platform for exploring emergent phenomena. Here, we report an observation of the photovoltaic effect in a WS2/MoS2 vdW heterostructure. Light excitation of WS2/MoS2 at a wavelength of 633 nm yields a photocurrent without applying...
Covalent functionalization of tungsten disulfide (WS2) with photo‐ and electro‐active nickel‐porphyrin (NiP) is reported. Exfoliated WS2 interfacing NiP moieties with 1,2‐dithiolane linkages is assayed in the oxygen evolution reaction under both dark and illuminated conditions. The hybrid material presented, WS2−NiP, is fully characterized with com...
We fabricated sensors by modifying the surface of MoS2 and WS2 with COVID-19 antibodies and investigated their characteristics, including stability, reusability, sensitivity, and selectivity. Thiols and disulfanes in antibodies strongly interact with vacant Mo or W sites of MoS2 or WS2, yielding durable devices that are stable for several days in t...
Although the synthesis of monolayer transition metal dichalcogenides has been established in the last decade, synthesiz-ing nanoribbons remains challenging. In this study, we have developed a straightforward method to obtain nanoribbons with controllable widths (25-8000 nm) and lengths (1-50 μm) by O2 etching of the metallic phase in metal-lic/semi...
Although the functionalization and modification of single‐walled carbon nanotubes (SWCNTs) has been advanced for two decades, their chemical transformation via catalytic processes has yet to be explored and further facilitate their industrial utility. Here, the decatungstate‐photocatalyzed acylation is described of semiconducting (7,6)SWCNTs and th...
Herein, we introduced the versatility of free-base and zinc-metallated porphyrin (H2P and ZnP, respectively) to combine with boron azadipyrromethene (azaBDP) NIR absorbing species, for extending their photophysical interest and covalently anchored onto graphene. In particular, the covalent functionalization of graphene with those H2P-azaBDP and ZnP...
Ultrathin lateral heterostructures of monolayer MoS2 and WS2 have successfully been realized with the metal-organic chemical vapor deposition method. Atomic-resolution HAADF-STEM observations have revealed that the junction widths of lateral heterostructures range from several nanometers to single-atom thickness, the thinnest heterojunction in theo...
We describe the basal plane functionalization of chemically exfoliated molybdenum disulfide (ce-MoS2) nanosheets with a benzo-15-crown-5 ether (B15C5), promoted by the chemistry of diazonium salts en route to the fabrication and electrochemical assessment of an ion-responsive electrode. The success of the chemical modification of ce-MoS2 nanosheets...
The covalent functionalization of MoS2 with a perylenediimide (PDI) is reported and the study is accompanied by detailed characterization of the newly prepared MoS2‐PDI hybrid material. Covalently functionalized MoS2 interfacing organic photoactive species has shown electron and/or energy accepting, energy reflecting or bi‐directional electron acce...
The well‐known electron acceptor perylenediimide (PDI) is covalently attached to semiconducting MoS2, thus exposing the MoS2 material's electron donating potential in the novel MoS2–PDI hybrid.
Abstract
The covalent functionalization of MoS2 with a perylenediimide (PDI) is reported and the study is accompanied by detailed characterization of the n...
Pyrene carrying an 1,2-dithiolane linker was employed to functionalize exfoliated WS2 and the resulting material was used in a proof-of-concept application as a photoresistor type sensor. The WS2–pyrene hybrid material was comprehensively characterized by spectroscopic, thermal and microscopy techniques, coupled to density functional theory modelli...
In this study, we develop a new approach for stabilization of metallic phases of monolayer MoS2 through the formation of lateral heterostructures composed of semiconducting/metallic MoS2. The structure of metallic (a mixture of T and T′) and semiconducting (2H) phases was unambiguously characterized by Raman spectroscopy, x-ray photoelectron spectr...
Chemical functionalization of graphene aims at tailoring its properties and to promote its use in an array of different application fields through the attachment of different functional groups. In this review, we attempt to detail the major synthetic routes that are employed for the covalent functionalization of graphene. Additionally, we aim to pr...
The preparation of an entirely supramolecular, multichromophoric azaborondipyrromethene (ABDP)/zinc tetraphenylporphyrin (ZnTPP)/exfoliated graphene (GR) nanoensemble was accomplished. The ABDP derivative bears glycol chains for enhancing solubility and a pyridine functionality for allowing coordination with ZnTPP. The ABDP/ZnTPP/GR nanoensemble wa...
The preparation of an MoS2–polymer carbon nanodot (MoS2‐PCND) hybrid material was accomplished by employing an easy and fast bottom‐up synthetic approach. Specifically, MoS2‐PCND was realized by the thermal decomposition of ammonium tetrathiomolybdate and the in situ complexation of Mo with carboxylic acid units present on the surface of PCNDs. The...
Molybdändisulfid‐Nanoschichten wurden mit Porphyrin kovalent modifiziert und vollständig charakterisiert. Weder die Porphyrin‐Absorption noch die Fluoreszenz wurden durch die kovalente Bindung an MoS2 merklich beeinflusst. Mithilfe transienter Absorptionsspektroskopie konnte jedoch ein komplexer Pingpong‐Energietransfer‐Mechanismus, nämlich vom Por...
Environmental degradation of transition metal disulfides (TMDs) is a key stumbling block in a range of applications. We show that a simple one-pot non-covalent pyrene coating process protects TMDs from both photoinduced oxidation and environmental aging. Pyrene is immobilized non-covalently on the basal plane of exfoliated MoS2 and WS2. The optical...
Molybdenum disulfide nanosheets covalently modified with porphyrin were prepared and fully characterized. Neither the porphyrin absorption nor its fluorescence was notably affected by covalent linkage to MoS2. The use of transient absorption spectroscopy showed that a complex ping‐pong energy‐transfer mechanism, namely from the porphyrin to MoS2 an...
Hin und wieder zurück : In einem Porphyrin‐MoS2‐Hybridmaterial wurde komplexe Pingpong‐Energieübertragung vom Porphyrin zum MoS2 und wieder zurück zum Porphyrin mittels transienter Absorptionsspektroskopie beobachtet. Dies ermöglicht potentielle Anwendungen in der Photosensibilisierung.
Abstract
Molybdändisulfid‐Nanoschichten wurden mit Porphyrin...
ChemiProject es un juego de cartas diseñado de 2-8 jugadores y para mayores de 12.
Como buen juego de química intenta enseñar conceptos científicos
interesantes y potenciar habilidades como la organización mental,
concentración, memorización, el cálculo y la estrategia. También como la integración y familiarizaron de conocimientos de hitos científi...
Se trata de un juego de química Orgánica de 42 cartas.
Es de 2-4 jugadores.
+6 años 5 min.
Cada carta es una molécula famosa en química orgánica. La carta tiene una pequeña descripción y puede enseñar algunos conceptos básicos, como los grupos funcionales o reactividad.
In this chapter we explore the possibilities of using MoS2 for chemical gas sensing. We first introduce monolayer MoS2 and discuss the different reconstructed phases that can be produced in terms of their atomic and electronic structure. We show how these properties can vary drastically from their bulk counterparts, and how MoS2 can be taken as a u...
It is a 42 chemical cards about organic chemistry.
It is from 2-4 players.
+6 years
5 min.
Each card is a famous molecule in organic chemistry.
The card has a small description and can teach some basics concepts such as functional groups of reactivity.
-> In the supporting information you can find the Spanish Version!
The functionalization of MoS2 is of paramount importance for tailoring its properties towards optoelectronic applications and unlocking its full potential. Zinc phthalocyanine (ZnPc) carrying an 1,2‐dithiolane oxide linker was used to functionalize MoS2 at defect sites located at the edges. The structure of ZnPc‐MoS2 was fully assessed by complemen...
Functionalization of MoS2 is of paramount importance tailoring its properties towards optoelectronic applications and unlocking its full potential. Zinc phthalocyanine (ZnPc) carrying an 1,2‐dithiolane oxide linker was employed to functionalize MoS2 at defected sites located at the edges. The structure of ZnPc‐MoS2 was fully assessed by complementa...
Transition metal dichalcogenides (TMDs) attract increased attention for the development of donor-acceptor materials enabling improved light harvesting and optoelectronic applications. The development of novel donor-acceptor nanoensembles consisting of poly(3-thiophene sodium acetate) and ammonium functionalized MoS2 and WS2 was accomplished, while...
Exfoliated semiconducting MoS2 and WS2 were covalently functionalized with 1,2-dithiolane-modified carbon nanodots (CNDs). The newly synthesized CND-MoS2 and CND-WS2 hybrids were characterized by spectroscopic, thermal and elec-tron microscopy imaging methods. Based on electronic absorption and fluorescence emission spectroscopy, modulation of the...
The emission of a bright blue fluorescence is a unique feature common to the vast variety of polymer carbon dots (CDs) prepared from carboxylic acid and amine precursors. However, the difficulty to assign a precise chemical structure to this class of CDs yet hampers the comprehension of their underlying luminescence principle. In this work, we show...
The goal of this game is to inspire people in science - showing the romantic vision of a scientist about life or a new way to understand all the things around us. ChemiProject is an educational game centered in organic chemistry played by 2-8 players. Easy rules based in a simplified organic chemistry model makes easy to understand the game for age...
Ammonium modified MoS2 and WS2 were prepared and characterized by complementary spectroscopic, thermal and microscopic means. The positive charges on functionalized MoS2 and WS2, owed to the presence of ammonium units, were exploited to electrostatically bring in contact an anionic porphyrin bearing a carboxylate moiety, yielding porphyrin/MoS2 and...
Here are the rules of ChemiProject. (English)
It is a game for 2 to 4 players (8, Expansion) and for ages 12 years or more.
ChemiProject is an educational game of chemistry. It tries to show and teach science concepts and some skills such as organization, concentration, memorization, calculation and strategy.
The game is available in Amazon:
-...
We report on the preparation, characterization and photophysical and electrocatalytic properties of carbon dots (CDs)/MoS2 ensembles. Based on electrostatic interactions, ammonium functionalized MoS2, prepared upon reaction of 1,2‐dithiolane tert‐butyl carbamate with MoS2 followed by acidic deprotection, was coupled with CDs bearing multiple carbox...
The covalent functionalization of exfoliated semiconducting MoS2 by 1,2-dithiolanes bearing an ethylene glycol alkyl chain terminated to a butoxycarbonyl-protected amine and a photoactive pyrene moiety is accomplished. The MoS2-based nanohybrids were fully characterized by complementary spectroscopic, thermal, and microscopy techniques. Markedly, d...
N-methyl-2-pyrrolidone (NMP) has been shown to be the most effective solvent for liquid phase
exfoliation and dispersion of a range of 2D materials including graphene, molybdenum disulphide
(MoS2) and black phosphorus. However, NMP is also known to be susceptible to sonochemical
degradation during exfoliation. We report that this degradation gives...
An organocatalytic enantioselective aza-Friedel-Crafts addition of 2-naphthols to benzoxathiazine 2,2-dioxides is described using a quinine-derived bifunctional catalyst. The method allows the use of a wide range of aromatic compounds as nucleophiles, including 1-naphthol and sesamol, and benzoxathiazines 2,2-dioxides, expanding the existing state...
A quinine-derived thiourea organocatalyst promoted the highly enantioselective addition of naphthols and activated phenols to ketimines derived from isatins. The reaction afforded chiral 3-amino-2-oxindoles with a quaternary stereocenter in high yields (up to 99 %) with excellent enantioselectivity (up to 99 % ee). To the best of our knowledge, thi...
A quinine-derived thiourea organocatalyst promoted the highly enantioselective addition of naphthols and activated phenols to ketimines derived from isatins. The reaction afforded chiral 3-amino-2-oxindoles with a quaternary stereocenter in high yields (up to 99 %) with excellent enantioselectivity (up to 99 % ee). To the best of our knowledge, thi...
