A triptycene-based two-dimensional porous organic polymeric nanosheet

Discrete Element Method (DEM) computer simulation is used to examine the influence of contact force between two-dimensional aggregates of polystyrene microsphere formed on the air-liquid interface. Colloidal aggregates have been treated as the granular material or discontinuum materials. The interaction force models are related to experiment which had done by digital video microscopy. The interaction mechanisms of the contact forces between particles in the colloidal system can be considered as a combination of spring and dashpot force and van der Waals force. According to the DEM, the interaction forces are evaluated to introduce relations between particles and the result comparison between the computer simulation and the experimental work. This study indicates that the behavior of the colloidal aggregates depends on the long-ranged (spring and dashpot) and the short-ranged interaction force (van der Waals). Besides, the behaviors shown in both computer simulation and the experiment are in good agreement. Thus, this computer simulation method can mimic the behavior of colloidal aggregates forming as a monolayer at the air-liquid interface.

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Self-Assembly of CdTe Nanocrystals into Two-Dimensional Nanoarchitectures at the Air−Liquid Interface Induced by Gemini Surfactant of 1,3-Bis(hexadecyldimethylammonium) Propane Dibromide

The Journal of Physical Chemistry C ◽

10.1021/jp710004t ◽

2008 ◽

Vol 112 (17) ◽

pp. 6689-6694 ◽

Cited By ~ 12

Author(s):

Mingxian Liu ◽

Lihua Gan ◽

Yaling Zeng ◽

Zijie Xu ◽

Zhixian Hao ◽

...

Keyword(s):

Self Assembly ◽

Gemini Surfactant ◽

Liquid Interface ◽

Two Dimensional ◽

Cdte Nanocrystals ◽

Air Liquid Interface

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Synthesis of nanometer scale oxide-based titania films by a two-dimensional sol–gel process at the air–liquid interface

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/s0927-7757(98)00328-8 ◽

1999 ◽

Vol 149 (1-3) ◽

pp. 89-98 ◽

Cited By ~ 7

Author(s):

F Facca ◽

G Puccetti ◽

R.M Leblanc

Keyword(s):

Sol Gel ◽

Liquid Interface ◽

Nanometer Scale ◽

Two Dimensional ◽

Sol Gel Process ◽

Titania Films ◽

Air Liquid Interface

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Two-Dimensional Conjugated Covalent Organic Framework Films via Oxidative C–C Coupling Reactions at a Liquid–Liquid Interface

Organic Materials ◽

10.1055/s-0041-1723767 ◽

2021 ◽

Vol 03 (01) ◽

pp. 060-066

Author(s):

Shaofei Wu ◽

Hoa Phan ◽

Jing Li ◽

Haomin Xu ◽

Xing Li ◽

...

Keyword(s):

Coupling Reaction ◽

Liquid Interface ◽

Antiferromagnetic Coupling ◽

Coupling Reactions ◽

Two Dimensional ◽

Covalent Organic Frameworks ◽

Neutral Form ◽

Covalent Organic Framework ◽

Good Crystallinity ◽

New Strategy

The construction of conjugated covalent organic frameworks (COFs) with strong C–C bond linkage remains a big challenge. Herein, we report a new strategy by using an oxidative C–C coupling reaction between electron-rich pyrrole rings at a liquid–liquid interface. Two threefold symmetric monomers containing three terminal pyrrole units were tested, and both gave two-dimensional conjugated COF films with good crystallinity. The bipyrrole units in the as-formed COFs are partially doped, which can be reduced to the neutral form by hydrazine and redoped by I2 vapor. The I2-doped films showed high conductivity (1.35 S/m). Meanwhile, the unpaired electrons exhibited moderate interlayer antiferromagnetic coupling.

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