scholarly journals Monolayer Nanosheets Formed by Liquid Exfoliation of Charge-as-Sisted Hydrogen-Bonded Frameworks

2020 ◽  
Author(s):  
Josh Nicks ◽  
Stephanie Boer ◽  
Nicholas White ◽  
jonathan Foster
Keyword(s):  
Self Assembly ◽  
Organic Dye ◽  
The Self ◽  
Two Dimensional ◽  
Free Standing ◽  
Liquid Exfoliation ◽  
New Family ◽  
Two Dimensional Materials ◽  
Ultrasound Assisted ◽  
Hydrogen Bonded

Hydrogen-bonded organic frameworks (HOFs) are a diverse and tunable class of materials, but their potential as free-standing two-dimensional nanomaterials has yet to be explored. Here we report the self-assembly of two layered hydrogen-bonded frameworks based on strong, charge-assisted hydrogen-bonding between carboxylate and amidinium groups. Ultrasound-assisted liquid exfoliation of both materials readily produces monolayer hydrogen-bonded organic nanosheets (HONs) with micron-sized lateral dimensions. The HONs show remarkable stability and maintain their extended crystallinity and monolayer structures even after being suspended in water at 80 °C for three days. These systems also exhibit efficient fluorescence quenching of an organic dye in organic solvents, superior to the quenching ability of the bulk frameworks. We anticipate that this approach will provide a route towards a diverse new family of molecular two-dimensional materials with great potential for use in separation, sensing, catalysis, delivery, and electronics materials applications.

scholarly journals Monolayer Nanosheets Formed by Liquid Exfoliation of Charge-as-Sisted Hydrogen-Bonded Frameworks

2020 ◽  
Author(s):  
Josh Nicks ◽  
Stephanie Boer ◽  
Nicholas White ◽  
jonathan Foster
Keyword(s):  
Self Assembly ◽  
Organic Dye ◽  
The Self ◽  
Two Dimensional ◽  
Free Standing ◽  
Liquid Exfoliation ◽  
New Family ◽  
Two Dimensional Materials ◽  
Ultrasound Assisted ◽  
Hydrogen Bonded

Hydrogen-bonded organic frameworks (HOFs) are a diverse and tunable class of materials, but their potential as free-standing two-dimensional nanomaterials has yet to be explored. Here we report the self-assembly of two layered hydrogen-bonded frameworks based on strong, charge-assisted hydrogen-bonding between carboxylate and amidinium groups. Ultrasound-assisted liquid exfoliation of both materials readily produces monolayer hydrogen-bonded organic nanosheets (HONs) with micron-sized lateral dimensions. The HONs show remarkable stability and maintain their extended crystallinity and monolayer structures even after being suspended in water at 80 °C for three days. These systems also exhibit efficient fluorescence quenching of an organic dye in organic solvents, superior to the quenching ability of the bulk frameworks. We anticipate that this approach will provide a route towards a diverse new family of molecular two-dimensional materials with great potential for use in separation, sensing, catalysis, delivery, and electronics materials applications.

Effect of shape on the self-assembly of faceted patchy nanoplates with irregular shape into tiling patterns

Soft Matter ◽  
2015 ◽  
Vol 11 (7) ◽  
pp. 1386-1396 ◽  
Author(s):  
Jaime A. Millan ◽  
Daniel Ortiz ◽  
Sharon C. Glotzer
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Irregular Shape ◽  
Two Dimensional ◽  
New Class ◽  
Wide Range ◽  
Two Dimensional Materials ◽  
Tiling Patterns

Recent reports of the synthesis and assembly of faceted nanoplates with a wide range of shapes and composition motivates the possibility of a new class of two-dimensional materials with specific patterns targeted for a host of exciting properties.

Chemical and Constitutional Influences in the Self-Assembly of Functional Supramolecular Hydrogen-Bonded Nanoscopic Fibres

2006 ◽  
Vol 12 (36) ◽  
pp. 9161-9175 ◽  
Author(s):  
Josep Puigmartí-Luis ◽  
Andrea Minoia ◽  
Ángel Pérez del Pino ◽  
Gregori Ujaque ◽  
Concepció Rovira ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Hydrogen Bonded

Two-dimensional gold trisoctahedron nanoparticle superlattice sheets: self-assembly, characterization and immunosensing applications

Nanoscale ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 5065-5071 ◽  
Author(s):  
Dashen Dong ◽  
Lim Wei Yap ◽  
Detlef M. Smilgies ◽  
Kae Jye Si ◽  
Qianqian Shi ◽  
...  
Keyword(s):  
Self Assembly ◽  
Two Dimensional ◽  
Free Standing

Free-standing gold trisoctahedron superlattice nanosheet is successfully fabricated, characterized, which can serve as a novel immunosensor.

Hydrogen-bonded azaphenacene: a strategy for the organization of π-conjugated materials

2018 ◽  
Vol 6 (15) ◽  
pp. 3968-3975 ◽  
Author(s):  
Paula Gómez ◽  
Stamatis Georgakopoulos ◽  
José Pedro Cerón ◽  
Iván da Silva ◽  
Miriam Más-Montoya ◽  
...  
Keyword(s):  
Self Assembly ◽  
Molecular Design ◽  
The Self ◽  
Molecular Materials ◽  
Conjugated Materials ◽  
Hydrogen Bonded

Molecular design for the self-assembly of molecular materials.

scholarly journals Enhancement of microwave absorption bandwidth of MXene nanocomposites through macroscopic design

2020 ◽  
Vol 7 (8) ◽  
pp. 200456 ◽  
Author(s):  
Pritom J. Bora ◽  
T. R. Suresh Kumar ◽  
Daniel Q. Tan
Keyword(s):  
Microwave Absorption ◽  
Polymer Nanocomposites ◽  
Reflection Loss ◽  
The Other ◽  
Two Dimensional ◽  
Absorption Bandwidth ◽  
Hybrid Matrix ◽  
New Family ◽  
Two Dimensional Materials ◽  
First Time

MXene, the new family of two-dimensional materials having numerous nanoscale layers, is being considered as a novel microwave absorption material. However, MXene/functionalized MXene-loaded polymer nanocomposites exhibit narrow reflection loss (RL) bandwidth (RL less than or equal to −10 dB). In order to enhance the microwave absorption bandwidth of MXene hybrid-matrix materials, for the first time, macroscopic design approach is carried out for TiO 2 -Ti 3 C 2 T x MXene and Fe 3 O 4 @TiO 2 -Ti 3 C 2 T x MXene hybrids through simulation. The simulated results indicate that use of pyramidal meta structure of MXene can significantly tune the RL bandwidth. For optimized MXene hybrid-matrix materials pyramid pattern, the bandwidth enhances to 3–18 GHz. Experimental RL value well matched with the simulated RL. On the other hand, the optimized Fe 3 O 4 @TiO 2 -Ti 3 C 2 T x hybrid exhibits two specific absorption bandwidths (minimum RL value - −47 dB). Compared with other two-dimensional nanocomposites such as graphene or Fe 3 O 4 -graphene, MXene hybrid-matrix materials show better microwave absorption bandwidth in macroscopic pattern.

Role of the deposition temperature on the self-assembly of the non-planar molecule benzene-1,3,5-triphosphonic acid (BTP) at the liquid–solid interface

2016 ◽  
Vol 18 (35) ◽  
pp. 24219-24227 ◽  
Author(s):  
Doan Chau Yen Nguyen ◽  
Lars Smykalla ◽  
Thi Ngoc Ha Nguyen ◽  
Michael Mehring ◽  
Michael Hietschold
Keyword(s):  
Self Assembly ◽  
Deposition Temperature ◽  
Supramolecular Structures ◽  
The Self ◽  
Solid Interface ◽  
Planar Molecule ◽  
Hydrogen Bonded

Hydrogen-bonded supramolecular structures of BTP at the undecanol–graphite interface were studied by STM in dependence on the deposition temperature.

Self-assembled atomically thin hybrid conjugated polymer perovskites with two-dimensional structure

2018 ◽  
Vol 6 (31) ◽  
pp. 8405-8410 ◽  
Author(s):  
Furkan H. Isikgor ◽  
Chilla Damodara Reddy ◽  
Mengsha Li ◽  
Hikmet Coskun ◽  
Bichen Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Conjugated Polymer ◽  
The Self ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Self Assembled

2D hybrid perovskites are formed through the self assembly of polyaniline with PbI6 octahedra.

25th Anniversary Article: MXenes: A New Family of Two-Dimensional Materials

2013 ◽  
Vol 26 (7) ◽  
pp. 992-1005 ◽  
Author(s):  
Michael Naguib ◽  
Vadym N. Mochalin ◽  
Michel W. Barsoum ◽  
Yury Gogotsi
Keyword(s):  
Two Dimensional ◽  
25Th Anniversary ◽  
New Family ◽  
Two Dimensional Materials
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