Articles with "mechanochromism" as a keyword



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Partially Controlling Molecular Packing to Achieve Off–On Mechanochromism through Ingenious Molecular Design

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Published in 2020 at "Advanced Optical Materials"

DOI: 10.1002/adom.201902036

Abstract: The control of molecular packing at the molecular design stage is significant but challenging. Herein, a strategy is provided to regulate the molecular packing of pyrene derivatives based on steric and electronic effects. Two tertiary… read more here.

Keywords: partially controlling; mechanochromism; like packing; molecular packing ... See more keywords
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Highly Tough, Stretchable, and Solvent-Resistant Cellulose Nanocrystal Photonic Films for Mechanochromism and Actuator Properties.

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Published in 2022 at "Small"

DOI: 10.1002/smll.202107105

Abstract: Cellulose nanocrystals (CNCs)-derived photonic materials have confirmed great potential in producing renewable optical and engineering areas. However, it remains challenging to simultaneously possess toughness, strength, and multiple responses for developing high-performance sensors, intelligent coatings, flexible… read more here.

Keywords: solvent resistant; solvent; mechanochromism; stretchable solvent ... See more keywords
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Benzo-iridacyclopentadiene complexes: Mechanochromism and the effects of counter anions and halogen ligands

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Published in 2018 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2018.04.022

Abstract: Abstract Five novel cationic cyclometalated Ir(III) complexes of type [(CˆC)IrX(PPh3)2(dmbpy)]A (X = halogen; dmbpy = 4,4′-dimethoxy-2,2′-bipyridine; A = counterion) were synthesised and characterised. Complexes 1–3 ([(CˆC)IrCl(PPh3)2(dmbpy)]A) have different anions (A = Cl−, CF3SO3−, PF6−) and complexes 4–5 ([(CˆC)IrX(PPh3)2(dmbpy)]PF6) have different halogen ligands (X = Br−,… read more here.

Keywords: mechanochromism; iridacyclopentadiene complexes; complexes mechanochromism; halogen ligands ... See more keywords
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Multicolor mechanochromism of a phenothiazine derivative through molecular interaction and conformational modulations

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Published in 2021 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2021.109311

Abstract: Abstract Mechanochromic luminescent (MCL) materials have attracted great attention in the fields of sensing, memory chips, and anti-counterfeiting. However, most MCL materials only display a two-color change and it is challenging to achieve multicolor mechanochromism… read more here.

Keywords: phenothiazine derivative; multicolor mechanochromism; mechanochromism phenothiazine; mechanochromism ... See more keywords
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Exploration of immobilization conditions of cellulosic lyotropic liquid crystals in monomeric solvents by in situ polymerization and achievement of dual mechanochromism at room temperature

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Published in 2018 at "RSC Advances"

DOI: 10.1039/c8ra04878a

Abstract: We investigated conditions to prepare cellulosic cholesteric liquid crystalline (ChLC) films in order to accomplish dual mechanochromism, i.e., colour control and circular dichroic inversion upon mechanical stimulus, at room temperature. Flexible propionylated hydroxypropyl cellulose (PHPC)… read more here.

Keywords: mechanochromism; room temperature; monomeric solvents; dual mechanochromism ... See more keywords
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Achieving remarkable and reversible mechanochromism from a bright ionic AIEgen with high specificity for mitochondrial imaging and secondary aggregation emission enhancement for long-term tracking of tumors

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Published in 2020 at "Materials Chemistry Frontiers"

DOI: 10.1039/c9qm00744j

Abstract: Strong intermolecular interactions that are in favour of elevating the luminescence efficiencies of aggregation-induced emission luminogens (AIEgens) are usually detrimental to the generation of obvious mechanochromism (MC). Therefore, it remains a challenge to develop MC-active… read more here.

Keywords: aggregation; remarkable reversible; mechanochromism; ionic aiegen ... See more keywords
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Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer.

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Published in 2023 at "Chemical communications"

DOI: 10.1039/d3cc01900d

Abstract: Controlled polymer mechanochromism has large potential for new applications. We design a novel ESIPT mechanophore (HBIA-2OH) by three-step synthesis. Connected to polyurethane, it shows unique photo-gated mechanochromism from excited-state intramolecular proton transfer (ESIPT) via photo-induced… read more here.

Keywords: photo; mechanochromism; photo gated; excited state ... See more keywords
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Suppressing the mechanochromism of flexible photonic crystals.

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Published in 2023 at "Optics express"

DOI: 10.1364/oe.477189

Abstract: Photonic crystal slabs (PCS) are a promising platform for optical biosensing. Yet, flexible applications based on PCS for biosensing have been limited, as the mechanical properties influence the optical ones. Here, we show the suppression… read more here.

Keywords: flexible photonic; index; photonic crystal; mechanochromism ... See more keywords
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Modulating Room-Temperature Phosphorescence-To-Phosphorescence Mechanochromism by Halogen Exchange

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Published in 2022 at "Frontiers in Chemistry"

DOI: 10.3389/fchem.2021.812593

Abstract: Modulating the stimulus-responsiveness of a luminescent crystal is challenging owing to the complex interdependent nature of its controlling factors, such as molecular structure, molecular conformation, crystal packing, optical properties, and amorphization behavior. Herein, we demonstrate… read more here.

Keywords: mechanochromism; room temperature; halogen exchange; phosphorescence ... See more keywords