Photo- and halochromism of spiropyran-based main-chain polymers

Thai, Linh Duy; Kammerer, Jochen A.; Mutlu, Hatice; Barner-Kowollik, Christopher

doi:10.1039/d3sc06383f

Cited by 4 publications

(3 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…21,22 SP, known for its photo-/mechano-responsive properties, has been widely incorporated into stimuli-responsive materials, enabling changes, enhancements, or even complete innovations in functionality, and it has demonstrated extraordinarily versatile responsivity and great potential in various applications. 23,24 The diverse range of SP derivatives highlight the importance of substituent structures and crosslinked network configurations in determining the switching activity in response to external stimuli. In some cases, a mechano-responsive colour change can be observed when substituents are crosslinked in different directions around the spiral ring.…”

Section: Introductionmentioning

confidence: 99%

Stimuli responsive dynamic polymer networks with tunable toughness and elasticity through the regulation of covalent crosslinking and reversible hydrogen bonds

Zhang,

Lai,

Bai

et al. 2024

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Stimuli responsive dynamic polymer networks with tunable toughness and elasticity through the regulation of covalent crosslinking and reversible hydrogen bonds

Zhang,

Lai,

Bai

et al. 2024

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…The specific properties of adaptable polymeric materials in response to light, pH, or temperature are contingent on the inclusion of stimuli-sensitive moieties into the constituting polymer chains. The significance of adaptable soft-matter materials is demonstrated through their countless applications across many fields of science and industry …”

mentioning

confidence: 99%

“…We have previously demonstrated the feasibility of head-to-tail Acyclic Diene METathesis (ADMET) polymerization for the realization of responsive polymers having photoswitching moieties as main-chain active groups. , Macromolecular structures obtained via ADMET were further post-modified based on the formation of the internal acrylate bonds in their polymer backbone . However, the use of costly Hoveyda-Grubbs second generation (HG-II) catalysts potentially limits the application scope of this technique.…”

mentioning

confidence: 99%

Access to Main-Chain Photoswitching Polymers via Hydroxyl-yne Click Polymerization

Thai,

Kammerer,

Théato

et al. 2024

ACS Macro Lett.

Self Cite

View full text Add to dashboard Cite

Main-chain stimuli-responsive polymers synthesized via polymerization techniques that do not rely on metal-based catalysis are highly desirable for economic reasons and to avoid metal−polymer interactions. Herein, we introduce a metal-free head-to-tail organobasecatalyzed hydroxyl-yne click polymerization of an AB-type monomer to realize photoswitchable polymers featuring α-bismines as main-chain repeating units. The prepared main-chain α-bisimine-based polymers show excellent photoswitching in solution. We further post-functionalize the obtained polymers with various thiol compounds via thiol-Michael reactions to significantly lower the glass transition temperature (T g ), likely to be beneficial for the photoswitching process in the solid state. Thus, the herein introduced polymerization technique not only provides metal-free access to main-chain stimuli-responsive polymers, but also allows for the flexible post-modification of the obtained polymers to generate advanced macromolecular architectures with tunable properties.

show abstract

Synthesis, optical properties, and dual‐color halochromic fluorescence of novel π‐conjugated polymers bearing coumarin unit in the main chain

Kaneko,

Wang

2024

Journal of Polymer Science

View full text Add to dashboard Cite

A series of novel π‐conjugated polymers bearing alternating coumarin and phenylene units in the main chain backbone was synthesized via Sonogashira coupling reaction. The red‐shifts in the absorption maxima of the polymers indicate the expansion of π‐conjugated system in the polymer main chains. These polymers exhibited strong green fluorescence in organic solvents. Clearly perceptible dual‐color halochromic fluorescence was confirmed for the polymers by the significantly reversible changes of emission color from green to blue during alkalization and acidification processes. The lactone ring opening and closing property in the coumarin molecule functioned as a controllable switch, broadening the applications of the coumarin‐based π‐conjugated polymers as acid–base responsive fluorescence materials.

show abstract

Photo- and halochromism of spiropyran-based main-chain polymers

Abstract: Advanced functional polymeric materials based on spiropyrans (SPs) feature multi-stimuli responsive characteristics, such as a change in color with exposure to light (photochromism) or acids (halochromism). The inclusion of stimuli-responsive...

Cited by 4 publications

References 61 publications

Stimuli responsive dynamic polymer networks with tunable toughness and elasticity through the regulation of covalent crosslinking and reversible hydrogen bonds

Stimuli responsive dynamic polymer networks with tunable toughness and elasticity through the regulation of covalent crosslinking and reversible hydrogen bonds

Access to Main-Chain Photoswitching Polymers via Hydroxyl-yne Click Polymerization

Synthesis, optical properties, and dual‐color halochromic fluorescence of novel π‐conjugated polymers bearing coumarin unit in the main chain

Contact Info

Product

Resources

About