Binary breath figures for straightforward and controllable self-assembly of microspherical caps

2016 ◽  
Vol 18 (19) ◽  
pp. 13629-13637 ◽  
Author(s):  
Jianliang Gong ◽  
Bingang Xu ◽  
Xiaoming Tao ◽  
Lei Li
Keyword(s):  
Self Assembly ◽  
Breath Figures ◽  
Breath Figure

A binary breath figure approach of using water and methanol has been developed for controllable self-assembly of microspherical caps.

Reactive Nanopattern in a Triple Structured Bio-Inspired Honeycomb Film as a Clickable Platform

2018 ◽  
Author(s):  
Pierre Marcasuzaa ◽  
Samuel Pearson ◽  
Karell Bosson ◽  
Laurence Pessoni ◽  
Jean-Charles Dupin ◽  
...  
Keyword(s):  
Self Assembly ◽  
Double Porosity ◽  
Surface Groups ◽  
Specific Chemical ◽  
Site Specific ◽  
Surface Functionality ◽  
Wenzel State ◽  
Breath Figure ◽  
Responsive Surfaces ◽  
Secondary Population

A hierarchically structured platform was obtained from spontaneous self-assembly of a poly(styrene)-<i>b</i>-poly(vinylbenzylchloride) (PS-<i>b</i>-PVBC) block copolymer (BCP) during breath figure (BF) templating. The BF process using a water/ethanol atmosphere gave a unique double porosity in which hexagonally arranged micron-sized pores were encircled by a secondary population of smaller, nano-sized pores. A third level of structuration was simultaneously introduced between the pores by directed BCP self-assembly to form out-of-the-plane nano-cylinders, offering very rapid bottom-up access to a film with unprecedented triple structure which could be used as a reactive platform for introducing further surface functionality. The surface nano-domains of VBC were exploited as reactive nano-patterns for site-specific chemical functionalization by firstly substituting the exposed chlorine moiety with azide, then “clicking” an alkyne by copper (I) catalyzed azide-alkyne Huisgen cycloaddition (CuAAC). Successful chemical modification was verified by NMR spectroscopy, FTIR spectroscopy, and XPS, with retention of the micro- and nanostructuration confirmed by SEM and AFM respectively. Protonation of the cyclotriazole surface groups triggered a switch in macroscopic behavior from a Cassie-Baxter state to a Wenzel state, highlighting the possibility of producing responsive surfaces with hierarchical structure.

Synthesis of polystyrene with cyclic, ionized and neutralized end groups and the self-assemblies templated by breath figures

2014 ◽  
Vol 5 (11) ◽  
pp. 3666-3672 ◽  
Author(s):  
Liang-Wei Zhu ◽  
Wu Yang ◽  
Yang Ou ◽  
Ling-Shu Wan ◽  
Zhi-Kang Xu
Keyword(s):  
The Self ◽  
Porous Films ◽  
Breath Figures ◽  
Breath Figure ◽  
End Groups ◽  
Breath Figure Method

Polymers with functional end groups are synthesized using a cyclic lactone ATRP initiator for honeycomb-patterned porous films by the breath figure method.

Hierarchically porous bio-inspired films prepared by combining “breath figure” templating and selectively degradable block copolymer directed self-assembly

2016 ◽  
Vol 52 (61) ◽  
pp. 9562-9565 ◽  
Author(s):  
Arthur Bertrand ◽  
Antoine Bousquet ◽  
Christine Lartigau-Dagron ◽  
Laurent Billon
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Bottom Up ◽  
Hierarchically Porous ◽  
Breath Figure

Hierarchically porous bio-inspired honeycomb films prepared by combining the breath figure bottom-up process and selectively degradable block copolymer directed self-assembly.

Rhodamine B-decorated poly(hydroxypropyl acrylate) and their effects on the self-assembly of breath figure arrays

2017 ◽  
Vol 75 (7) ◽  
pp. 2887-2900
Author(s):  
Qian Liu ◽  
Chun-Na Yan ◽  
Xin-Meng Xu ◽  
Li-Ping Wang ◽  
Guang Li
Keyword(s):  
Rhodamine B ◽  
Self Assembly ◽  
The Self ◽  
Breath Figure

scholarly journals Breath figure templated self-assembly of surface-acylated cellulose nanowhiskers confined as honeycomb films

2021 ◽  
Author(s):  
Huan Liu ◽  
Bo Pang ◽  
Kai Zhang
Keyword(s):  
Relative Humidity ◽  
Self Assembly ◽  
Three Dimensional ◽  
Planar Geometry ◽  
Cellulose Nanowhiskers ◽  
Water Droplets ◽  
Porous Films ◽  
Structural Colors ◽  
Breath Figure ◽  
High Concentrations

Abstract The self-assembly of cellulose nanowhiskers (CNWs) in confined geometries provides a powerful method for the fabrication of novel structures. Herein, ordered honeycomb microporous films were first prepared with surface-acylated CNWs (CNWs-SU) through the breath figure method. Resulting films showed highly porous order over large regions and the iridescent color was only displayed by their rims, which is different from traditional dish-cast CNW films showing the iridescent color over the whole area. This is mainly due to the condensation of water droplets forming three-dimensional (3D) geometry, which forced CNWs-SU to self-assemble into cholesteric architectures in confined geometry and resulted in the iridescent color of the rims after drying. The mechanism was further studied by investigating the critical influencing factors, primarily the concentration of CNW-SU suspensions, the relative humidity of the atmosphere and the surface-attached moieties. In particular, CNW-SU suspensions with a concentration of 3 mg/mL at the relative humidity of 75% preferentially formed honeycomb films with uniform pores. Too low or too high concentrations of CNW-SU suspensions or relative humidity are not preferable for uniform porous films. CNWs-SU with further immobilized octadecane or fluoroalkyl groups on their surface strongly affected the formation of uniform porous films because of higher hydrophobicity and accompanying inhomogeneous condensation of water droplets. This work provides a novel method to study the interactions of CNWs beyond the planar geometry and the formation of uniform porous films solely with CNWs with structural colors for diverse potential applications.

scholarly journals Breath-Figures Self-Assembly, the Versatile Method of Manufacturing Membranes and Porous Structures: Physical, Chemical and Technological Aspects

2017 ◽  
Author(s):  
Edward Bormashenko
Keyword(s):  
Self Assembly ◽  
Interfacial Phenomena ◽  
Physical Parameters ◽  
Porous Structures ◽  
Temporal Scales ◽  
Breath Figures ◽  
Spatial And Temporal Scales ◽  
Multi Scale ◽  
Physical Chemical ◽  
The Impact

The review is devoted to the physical, chemical and technological aspects of the breath-figures self-assembly process. Main stages of the process and the impact of the polymer architecture and physical parameters of the breath-figures self-assembly on the eventual pattern are covered. The review is focused on the hierarchy of spatial and temporal scales inherent for the breath-figures self-assembly. Multi-scale patterns arising from the process are addressed. The characteristic spatial lateral scales of patterns vary from nanometers to dozens of micrometers. The temporal scales of the process span from micro-seconds to seconds. The qualitative analysis performed in the paper demonstrates that the process is mainly governed by the interfacial phenomena, whereas the impact of inertia and gravity is negligible. Characterization and applications of polymer films manufactured with breath-figures self-assembly are discussed.

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