Covalent modification of franckeite with maleimides: connecting molecules and van der Waals heterostructures

2021 ◽  
Author(s):  
Julia Villalva ◽  
Sara Moreno-Da Silva ◽  
Palmira Villa ◽  
Luisa Ruiz-González ◽  
Cristina Navío ◽  
...  
Keyword(s):  
Click Chemistry ◽  
Van Der Waals ◽  
Covalent Modification ◽  
Van Der Waals Heterostructures ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure

We show that thiol–ene-like “click” chemistry can be used to decorate franckeite, a naturally occurring van der Waals heterostructure with maleimide reagents. In this way, we provide a pathway towards 2D–2D–0D mixed-dimensional heterostructures.

scholarly journals Covalent Chemistry on a Van Der Waals Heterostructure

2019 ◽  
Author(s):  
Julia Villalva ◽  
Sara Moreno ◽  
Palmira Villa ◽  
Luisa R. González ◽  
Cristina Navío ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Van Der Waals ◽  
Covalent Bond ◽  
Nir Spectroscopy ◽  
Common Goal ◽  
Van Der Waals Heterostructures ◽  
Electronic Interactions ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure ◽  
The Michael Addition

The building of van der Waals heterostructures and the decoration of 2D materials with organic molecules share a common goal: to obtain ultrathin materials with tailored properties. Performing controlled chemistry on van der Waals heterostructures would add an extra level of complexity, providing a pathway towards 2D-2D-0D mixed-dimensional heterostructures. Here we show that thiol-ene-like “click” chemistry can be used to decorate franckeite, a naturally occurring van der Waals heterostructure, with maleimide reagents. ATR-IR and NMR analyses corroborate the Michael addition mechanism via the formation of a S-C covalent bond, while Raman and HR-TEM show that the SnS<sub>2</sub>-PbS alternating structure of franckeite is preserved, and suggest that SnS<sub>2</sub>reacts preferentially, which is confirmed through XPS. We illustrate how this methodology can be used to add functional molecular moieties by decorating franckeite with porphyrins. UV-vis-NIR spectroscopy confirms that the chromophore remains operative and shows negligible electronic interactions with franckeite in the ground state, while its fluorescence is strongly quenched upon photoexcitation.

scholarly journals Covalent Chemistry on a Van Der Waals Heterostructure

2019 ◽  
Author(s):  
Julia Villalva ◽  
Sara Moreno ◽  
Palmira Villa ◽  
Luisa R. González ◽  
Andres Castellanos-Gomez ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Van Der Waals ◽  
Covalent Bond ◽  
Nir Spectroscopy ◽  
Common Goal ◽  
Van Der Waals Heterostructures ◽  
Electronic Interactions ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure ◽  
The Michael Addition

The building of van der Waals heterostructures and the decoration of 2D materials with organic molecules share a common goal: to obtain ultrathin materials with tailored properties. Performing controlled chemistry on van der Waals heterostructures would add an extra level of complexity, providing a pathway towards 2D-2D-0D mixed-dimensional heterostructures. Here we show that thiol-ene-like “click” chemistry can be used to decorate franckeite, a naturally occurring van der Waals heterostructure, with maleimide reagents. ATR-IR and NMR analyses corroborate the Michael addition mechanism via the formation of a S-C covalent bond, while Raman and HR-TEM show that the SnS<sub>2</sub>-PbS alternating structure of franckeite is preserved, and suggest that SnS<sub>2</sub>reacts preferentially, which is confirmed through XPS. We illustrate how this methodology can be used to add functional molecular moieties by decorating franckeite with porphyrins. UV-vis-NIR spectroscopy confirms that the chromophore remains operative and shows negligible electronic interactions with franckeite in the ground state, while its fluorescence is strongly quenched upon photoexcitation.

scholarly journals Covalent Chemistry on a Van Der Waals Heterostructure

2019 ◽  
Author(s):  
Julia Villalva ◽  
Sara Moreno ◽  
Palmira Villa ◽  
Luisa R. González ◽  
Cristina Navío ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Van Der Waals ◽  
Covalent Bond ◽  
Nir Spectroscopy ◽  
Common Goal ◽  
Van Der Waals Heterostructures ◽  
Electronic Interactions ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure ◽  
The Michael Addition

The building of van der Waals heterostructures and the decoration of 2D materials with organic molecules share a common goal: to obtain ultrathin materials with tailored properties. Performing controlled chemistry on van der Waals heterostructures would add an extra level of complexity, providing a pathway towards 2D-2D-0D mixed-dimensional heterostructures. Here we show that thiol-ene-like “click” chemistry can be used to decorate franckeite, a naturally occurring van der Waals heterostructure, with maleimide reagents. ATR-IR and NMR analyses corroborate the Michael addition mechanism via the formation of a S-C covalent bond, while Raman and HR-TEM show that the SnS<sub>2</sub>-PbS alternating structure of franckeite is preserved, and suggest that SnS<sub>2</sub>reacts preferentially, which is confirmed through XPS. We illustrate how this methodology can be used to add functional molecular moieties by decorating franckeite with porphyrins. UV-vis-NIR spectroscopy confirms that the chromophore remains operative and shows negligible electronic interactions with franckeite in the ground state, while its fluorescence is strongly quenched upon photoexcitation.

scholarly journals Natural van der Waals heterostructure cylindrite with highly anisotropic optical responses

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Arindam Dasgupta ◽  
Jie Gao ◽  
Xiaodong Yang
Keyword(s):  
Van Der Waals ◽  
Linear Dichroism ◽  
Third Harmonic ◽  
Inhomogeneous Strain ◽  
Optical Responses ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure ◽  
Polarized Raman ◽  
On Chip

AbstractThe mechanical exfoliation of naturally occurring layered materials has emerged as an easy and effective method for achieving ultrathin van der Waals (vdW) heterostructures with well-defined lattice orientations of the constituent two-dimensional (2D) material layers. Cylindrite is one such naturally occurring vdW heterostructure, where the superlattice is composed of alternating stacks of SnS2-like and PbS-like layers. Although the constituent 2D lattices are isotropic, inhomogeneous strain occurring from local atomic alignment for forcing the commensuration makes the cylindrite superlattice structurally anisotropic. Here, we demonstrate the highly anisotropic optical responses of cylindrite thin flakes induced by the anisotropic crystal structure, including angle-resolved polarized Raman scattering, linear dichroism, and polarization-dependent anisotropic third-harmonic generation. Our results provide a promising approach for identifying various natural vdW heterostructure-based 2D materials with tailored optical properties and can be harnessed for realizing anisotropic optical devices for on-chip photonic circuits and optical information processing.

Layered franckeite and teallite intrinsic heterostructures: shear exfoliation and electrocatalysis

2018 ◽  
Vol 6 (34) ◽  
pp. 16590-16599 ◽  
Author(s):  
Rui Gusmão ◽  
Zdeněk Sofer ◽  
Jan Luxa ◽  
Martin Pumera
Keyword(s):  
Liquid Phase ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Naturally Occurring

Naturally occurring van der Waals heterostructures (vdWH) undergo liquid-phase shear exfoliation and are applied in electrocatalytic energy reactions.

Two-dimensional layered Type-II MS2/BiOCl (M = Zr, Hf) van der Waals heterostructures: A promising photocatalysts for hydrogen generation

2021 ◽  
Author(s):  
Francis Opoku ◽  
Osei Akoto ◽  
Samuel Osei-Bonsu Oppong ◽  
Anthony Apeke Adimado
Keyword(s):  
Energy Storage ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Van Der Waals ◽  
H2 Production ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting ◽  
Van Der Waals Heterostructure

Sustainable hydrogen (H2) production via photocatalytic water splitting is considered the most promising energy storage, where two-dimensional van der Waals heterostructure, composed of two or more 2D monolayer materials, has...

scholarly journals Franckeite as a naturally occurring van der Waals heterostructure

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Aday J. Molina-Mendoza ◽  
Emerson Giovanelli ◽  
Wendel S. Paz ◽  
Miguel Angel Niño ◽  
Joshua O. Island ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure

Strain-tunable electronic structure and anisotropic transport properties in Janus MoSSe and g-SiC van der Waals heterostructure

2021 ◽  
Author(s):  
Yuliang Liu ◽  
Wenkai Zhao ◽  
Ying Shi ◽  
Chuan-Lu Yang
Keyword(s):  
Electronic Structure ◽  
Transport Properties ◽  
First Principles ◽  
Van Der Waals ◽  
First Principles Calculations ◽  
Van Der Waals Heterostructures ◽  
Van Der Waals Heterostructure ◽  
Anisotropic Transport ◽  
Optoelectronic Applications

The van der Waals heterostructures (vdWHs) create a multi-purpose platform to design unique structures for efficient photovoltaic and optoelectronic applications. In this paper, on the basis of the first-principles calculations,...

scholarly journals Vibrational Properties of a Naturally Occurring Semiconducting van der Waals Heterostructure

2021 ◽  
Author(s):  
Viviane Zurdo Costa ◽  
Liangbo Liang ◽  
Sam Vaziri ◽  
Addison Miller ◽  
Eric Pop ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Vibrational Properties ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure
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