Freezing-induced ordering of block copolymer micelles.

Chem Commun (Camb)

Laboratoire de Synthèse et Fonctionnalisation des Céramiques, UMR3080, CNRS/Saint-Gobain, 550 Av. Alphonse Jauffret, 84306 Cavaillon Cedex, France.

Published: October 2014

We demonstrate here the ordering of block copolymer micelles by ice templating, below 0 °C. We used this for the preparation of silica monoliths that present an ice-templated macroporosity, combined with a 2D hexagonal mesostructure templated by the addition of P123. We propose a mechanism triggered by the progressive freezing-induced concentration.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c4cc05556jDOI Listing

Publication Analysis

Top Keywords

ordering block
8
block copolymer
8
copolymer micelles
8
freezing-induced ordering
4
micelles demonstrate
4
demonstrate ordering
4
micelles ice
4
ice templating
4
templating °c
4
°c preparation
4

Similar Publications

The surface roughness of hole machining greatly influences the mechanical properties of parts, such as early fatigue failure and corrosion resistance. The boring and trepanning association (BTA) deep hole drilling with axial vibration assistance is a compound machining process of the tool cutting and the guide block extrusion. At the same time, the surface of the hole wall is also ironed by the axial large amplitude and low-frequency vibration of the guide block.

View Article and Find Full Text PDF

UV and Visible Light-Induced Photocatalytic Efficiency of Polyaniline/Titanium Dioxide Heterostructures.

Molecules

December 2024

Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland.

The concept of using polyaniline/titanium dioxide heterostructures as efficient photocatalysts is based on the synergistic effect of conducting polymer and metal oxide semiconductors. Due to inconclusive literature reports, the effect of different polyaniline/TiO ratios on photocatalytic activity under UV and visible light was investigated. In most papers, non-recommended dyes are used as model compounds to evaluate visible light activity.

View Article and Find Full Text PDF

With their ability to self-assemble spontaneously into well-defined nanoscale morphologies, block copolymer (BCP) thin films are a versatile platform to fabricate functional nanomaterials. An important challenge to wider deployment of BCPs in nanofabrication is combining precise control over the nanoscale domain orientation in BCP assemblies with scalable deposition techniques that are applicable to large-area, curved, and flexible substrates. Here, we show that spray-deposited smooth films of a nominally disordered BCP exhibit latent orientations, which can be prescriptively selected by controlling solvent evaporation during spray casting.

View Article and Find Full Text PDF

Immune checkpoint inhibitors (ICPis) significantly improves survival in a number of cancer patients by blocking immunosuppressive molecules and reactivating the function of effector T cells to specifically kil tumor cells. This article reports a case of secondary hypoadrenocorticism caused by programmed death 1 (PD-1) inhibitor related hypophysitis. A 65-year-old male patient received immunotherapy for right lung squamous cell carcinoma invading the chest wall (cT4N2M0) for 4 times.

View Article and Find Full Text PDF

Background: Trans girls may initiate early puberty blockers once puberty has started in order to prevent the development of masculine secondary sexual characteristics. Depending on how early the puberty blockers are administered, voice may have reached a certain degree of development and have acquired typically male acoustic and phonetic parameters, which can cause discomfort and affect the adolescent's quality of life.

Purpose: The aim of the present study was to (1) determine if there are differences in discomfort with the self-perceiver voice according to the moment of puberty block (PB), and (2) find a relation between vocal discomfort and variables such a voice phonetic/acoustic characteristics and self-perception of voice.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!