Evidence map›Paper›PMID 32964598›Full record

ArticleChemphyschem : a European journal of chemical physics and physical chemistry2020

The Mechanism of Flex-Activation in Mechanophores Revealed By Quantum Chemistry.

Lennart J Mier, Gheorghe Adam, Sourabh Kumar, Tim Stauch

Abstract read
In one paragraph

Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Mechanochemistry: Fundamental Principles and Applications.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  3. Article
  4. The Mechanism of Flex-Activation in Mechanophores Revealed By Quantum Chemistry.Chemphyschem : a European journal of chemical physics and physical chemistry · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Lennart J MierUniversity of Bremen, Institute for Physical and Theoretical Chemistry, Leobener Straße NW2, D-28359, Bremen, Germany.
Gheorghe AdamUniversity of Bremen, Institute for Physical and Theoretical Chemistry, Leobener Straße NW2, D-28359, Bremen, Germany.
Sourabh KumarUniversity of Bremen, Institute for Physical and Theoretical Chemistry, Leobener Straße NW2, D-28359, Bremen, Germany.ORCID 0000-0002-1303-2920
Tim StauchUniversity of Bremen, Institute for Physical and Theoretical Chemistry, Leobener Straße NW2, D-28359, Bremen, Germany.ORCID 0000-0001-7599-3578

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flex-activated mechanophores can be used for small-molecule release in polymers under tension by rupture of covalent bonds that are orthogonal to the polymer main chain. Using static and dynamic quantum chemical methods, we here juxtapose three different mechanical deformation modes in flex-activated mechanophores (end-to-end stretching, direct pulling of the scissile bonds, bond angle bendings) with the aim of proposing ways to optimize the efficiency of flex-activation in experiments. It is found that end-to-end stretching, which is a traditional approach to activate mechanophores in polymers, does not trigger flex-activation, whereas direct pulling of the scissile bonds or displacement of adjacent bond angles are efficient methods to achieve this goal. Based on the structural, energetic and electronic effects responsible for these observations, we propose ways of weakening the scissile bonds experimentally to increase the efficiency of flex-activation.

Indexed as

Computational ChemistryDensity Functional TheoryFlex-Activated MechanophoresMechanochemistryQuantum Chemistry

Identifiers

PMID32964598
PMCPMC7702058

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.