eprintid: 10173366
rev_number: 12
eprint_status: archive
userid: 699
dir: disk0/10/17/33/66
datestamp: 2023-07-17 10:25:22
lastmod: 2023-09-07 13:02:52
status_changed: 2023-07-17 10:25:22
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Singh, Vikramjeet
creators_name: Zhang, Jianhui
creators_name: Chen, Jianan
creators_name: Salzmann, Christoph G
creators_name: Tiwari, Manish K
title: Precision covalent organic frameworks for surface nucleation control
ispublished: inpress
divisions: UCL
divisions: B04
divisions: C05
divisions: F45
note: Copyright © 2023 The Authors. This is an open access article under the terms of the Creative
Commons Attribution License, which permits use, distribution and
reproduction in any medium, provided the original work is properly cited.
abstract: Unwanted accumulation of ice and lime scale crystals on surfaces is a long-standing challenge with major economic and sustainability implications. Passive inhibition of icing and scaling by liquid-repellent surfaces are often inadequate, susceptible to surface failure under harsh conditions, and unsuitable for long-term/real-life usages. Such surfaces often require a multiplicity of additional features such as optical transparency, robust impact resistance, and ability to prevent contamination from low surface energy liquids. Unfortunately, most promising advances have relied on using perfluoro compounds, which are bio-persistent and/or highly toxic. Here it is shown that organic, reticular mesoporous structures, covalent organic frameworks (COFs), may offer a solution. By exploiting simple and scalable synthesis of defect-free COFs and rational post-synthetic functionalization, nanocoatings with precision nanoporosity (morphology) are prepared that can inhibit nucleation at the molecular level without compromising the related contamination prevention and robustness. The results offer a simple strategy to exploit the nanoconfinement effect, which remarkably delays the nucleation of ice and scale formation on surfaces. Ice nucleation is suppressed down to −28 °C, scale formation is avoided for >2 weeks in supersaturated conditions, and jets of organic solvents impacting at Weber numbers >105 are resisted with surfaces that also offer optical transparency (>92%).
date: 2023-06-13
date_type: published
publisher: Wiley
official_url: https://doi.org/10.1002/adma.202302466
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2030223
doi: 10.1002/adma.202302466
medium: Print-Electronic
lyricists_name: Tiwari, Manish
lyricists_id: MKTIW24
actors_name: Tiwari, Manish
actors_id: MKTIW24
actors_role: owner
full_text_status: public
publication: Advanced Materials
article_number: e2302466
event_location: Germany
citation:        Singh, Vikramjeet;    Zhang, Jianhui;    Chen, Jianan;    Salzmann, Christoph G;    Tiwari, Manish K;      (2023)    Precision covalent organic frameworks for surface nucleation control.                   Advanced Materials      , Article e2302466.  10.1002/adma.202302466 <https://doi.org/10.1002/adma.202302466>.    (In press).    Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10173366/1/Advanced%20Materials%20-%202023%20-%20Singh.pdf