Colorimetric response of azobenzene-terminated polydiacetylene vesicles under thermal and photic stimuli

You, Xian; Chen, Xin; Zou, Gang; Su, Wei; Zhang, Qijin; He, Pingsheng

doi:10.1016/j.cplett.2009.10.001

Cited by 20 publications

(10 citation statements)

References 26 publications

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“…17 In order to improve the chromatic sensitivity and reversibility of PDA, Zou et al synthesized a series of azobenzeneincorporated PDAs through chemical bonds between azobenzene and the PDA backbone. 49 The derived PDA vesicles were fabricated to achieve a faster chromatic switch from blue to red in response to photonic stimuli (wavelength of 365 nm), e.g., 10 min compared to hours for the above azobenzeneincorporated PDA film by Peng et al However, subsequent UV irradiation at 435 nm did not induce red PDA vesicles back to blue either. It was found that strong p-p stacking interactions among azobenzene chromophores and the formation of a conjugated polymer chain ensured 'locking' of side chain configurations, and 'inhibition' of the photo-isomerization of the azobenzene chromophore at room temperature.…”

Section: Light-induced Reversible Chromatic Transition Of Polydiacety...mentioning

confidence: 99%

Chromatic polydiacetylene with novel sensitivity

et al. 2010

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Conjugated polymers have been investigated for a number of applications in optoelectronics and sensing due to their important electronic and optical properties. For instance, polydiacetylene (PDA) may change color in response to external stimuli and has been extensively explored as a material for chromatic sensors. However, the practical applications of PDA materials have been largely hampered by their irreversible chromatic transitions under limited stimuli such as temperature, pH, and chemical. As a result, much effort has been paid to improve the chromatic reversibility and increase the scope of external stimuli for PDA. In this tutorial review, the recent development of PDA materials which show reversible chromatic transition and respond to new stimuli including light and electrical current has been described.

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Section: Light-induced Reversible Chromatic Transition Of Polydiacety...mentioning

confidence: 99%

Chromatic polydiacetylene with novel sensitivity

et al. 2010

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“…Polydiacetylenes (PDAs), derived from the 1,4-addition polymerization of the corresponding diacetylene monomers, are the very intriguing materials in several respects [5][6][7]. PDAs display blue color normally and show color transition from blue to red upon temperature, pH, pressure, solvent and biological ligand interaction [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Reversible Thermochromism Supramolecules of 4-Aminophenol-Modified Polydiacetylene

et al. 2015

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A novel diacetylene monomer was synthesized via the esterification of 10,12-pentacosadiynoic acid with 4-aminophenol. The polymer of 10,12-pentacosadiynoic acid-4-aminophenyl ester was formed by self-assembly of the monomer, followed by UV irradiation at room temperature. It was characterized by the methods of NMR, laser diffraction, SEM and UV measurement. The polymer demonstrated a reversible purple-to-red colorimetric transition when the temperature changes from 25 to 70 • C.

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“…Azobenzene chromophores, covalently attached to polymer systems in the form of solid films, have been investigated for potential technological applications such as optical information storage and processing, optical switching devices, diffractive optical elements, and others due to the efficient photoisomerization and photoinduced anisotropy of the azobenzene groups 1–5. The versatility of the synthesis of these photoactive polymer systems was demonstrated by selective covalent attachment of the azo groups to the side chain, main chain, or chain ends1–13 of a wide variety of polymer systems often through ester bonds. On the other hand, a large number of efficient light‐switchable photoresponsive biomaterials14 with applications in biomedical fields have been reported.…”

Section: Introductionmentioning

confidence: 99%

Molecular level differentiation between end‐capped and intramolecular azofunctional oligo(ε‐caprolactone) positional isomers through liquid chromatography multistage mass spectrometry

Peptu

Brink

Harabagiu³

et al. 2012

J. Polym. Sci. A Polym. Chem.

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End-capped and intramolecular azofunctional oligocaprolactones were characterized at molecular level by liquid chromatography electrospray ionization mass spectrometry (ESI MS) and NMR spectroscopy. The Disperse Red 19 (DR19) azofunctional oligomers, DC, were synthesized by ring-opening oligomerization of e-caprolactone (e-CL) initiated by the hydroxyl groups of DR19 azo dye. The reaction products consist of a minor fraction of end-capped azo functional oligocaprolactone (a-DC), that is, a single CL arm oligomer, and a major fraction of intramolecular azo functional oligocaprolactone (b-DC), that is, a two CL arms oligomer. The chromatographic separation was used to discriminate between a-DC and b-DC, and the results were confirmed by MS/MS performed on an ESI ion trap instrument. The results supported by accurate mass data obtained for product ions using an ESI quadrupole time of flight instrument demonstrate the qualitative discrimination at the molecular level between intramolecular and end-capped azofunctional oligoesters isomers through a relatively simple multistage mass spectrometry experiment.

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Colorimetric response of azobenzene-terminated polydiacetylene vesicles under thermal and photic stimuli

Cited by 20 publications

References 26 publications

Chromatic polydiacetylene with novel sensitivity

Chromatic polydiacetylene with novel sensitivity

Preparation of Reversible Thermochromism Supramolecules of 4-Aminophenol-Modified Polydiacetylene

Molecular level differentiation between end‐capped and intramolecular azofunctional oligo(ε‐caprolactone) positional isomers through liquid chromatography multistage mass spectrometry

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