A renewable dynamic covalent network based on itaconic anhydride crosslinked polyglycerol: Adaptability, UV blocking and fluorescence

Shan, Yingfa; Liu, Tuan; Zhao, Baoming; Hao, Cheng; Zhang, Shuai; Li, Yingyi; Wu, Yingzhu; Zhang, Jinwen

doi:10.1016/j.cej.2019.123960

Cited by 22 publications

(7 citation statements)

References 39 publications

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“…4C). Compared with the reported fluorescent films, 39–43 our fluorescent cellulose films achieved a high transparency (>90% in the visible region), almost 100% UV-blocking ability, strong mechanical strength (>200 MPa), excellent biocompatibility, controllable biodegradability, and large-area fabrication (Fig. 4D).…”

Section: Resultsmentioning

confidence: 84%

Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

et al. 2022

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Section: Resultsmentioning

confidence: 84%

Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

et al. 2022

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“…As shown in Figure S11b in the Supporting Information, the fluorescence lifetime varies from 2.96 ns to 2.70 ns after adding 50 μM Fe 3+ , suggesting the quenching mechanism is not just due to static quenching process in which the excited state of the PCNDs-2 will not be perturbed. All these results comprehensively prove that the fluorescence quenching of PCNDs-2 provoked by Fe 3+ is the synergistic effect that arises from the formation of a stable nonfluorescence complex between surface functional groups of PCNDs-2 and Fe 3+ (static quenching), , and the complexing Fe 3+ to the surface of PCNDs-2 makes the electrons in the excited state of PCNDs-2 transfer to the half-filled 3d orbitals of Fe 3+ and thereby undergo the nonradiative electron/hole recombination annihilation (dynamic quenching). , …”

Section: Results and Discussionmentioning

confidence: 63%

“…All these results comprehensively prove that the fluorescence quenching of PCNDs-2 provoked by Fe 3+ is the synergistic effect that arises from the formation of a stable nonfluorescence complex between surface functional groups of PCNDs-2 and Fe 3+ (static quenching), 51,52 and the complexing Fe 3+ to the surface of PCNDs-2 makes the electrons in the excited state of PCNDs-2 transfer to the half-filled 3d orbitals of Fe 3+ and thereby undergo the nonradiative electron/hole recombination annihilation (dynamic quenching). 53,54 To further validate the synergistic quenching, the UV-vis absorption and FT-IR analyses were performed to prove that Fe 3+ indeed complexed with the surface functional groups of PCNDs-2. As depicted in Figure S11c in the Supporting Information, the UV-vis absorption peak of PCNDs-2 at ∼280 nm (n−π* transition) gradually enhanced and red-shifted to ∼290 nm in the presence of 50 μM Fe 3+ , demonstrating that Fe 3+ indeed complexed with PCNDs.…”

Section: Synthesis Of Polymer Carbon Nanodots (Pcnds)mentioning

confidence: 99%

Polymer Carbon Nanodots: A Novel Electrochemiluminophore for Dual Mode Detection of Ferric Ions

et al. 2022

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The development of simple and effective dual-mode analytical methods plays crucial regulatory roles in the discrimination of relevant target species, because of their built-in cross reference correction and high accuracy. In this work, a novel polymer carbon nanodots (PCNDs) prepared from a facile one-pot hydrothermal procedure using readily available L-tryptophan and L-phenylalanine as precursors, showed excellent aqueous solubility and blue fluorescence property with a high quantum yield of 29%. Moreover, the PCNDs was demonstrated to be a robust luminophore with electrochemiluminescence (ECL) efficiency of 43% was achieved by using K 2 S 2 O 8 as a coreactant. The spooling ECL spectroscopy was employed to take insight into excited states responsible for the potential-dependent ECL emissions. Most importantly, when introduced into construction of the fluorescence and ECL dual mode sensing platform, for the first time, the PCNDs displayed prominent performance for the detection of ferric ions (Fe 3+ ). The ferric ions could be quantified ranging from micromolar to millimolar with a detection limit of 0.22 and 5.3 μM, respectively. Such a dual-functional sensing platform also exhibits excellent selectivity, reproducibility and stability. Results from this work indicate that PCNDs showing great promise as a bright luminophore for the fabrication of low-cost, high-performance dual-signal readout platforms for ferric ions determination.

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“…Nevertheless, emissive dynamic polymers based on transesterification reactions have rarely been reported. Recently, a blue emissive self-healing polymer composed of polyglycerol and itaconic anhydride was synthesized by Shan et al and the fluorescence intensity of corresponding polymers could be selectively quenched by Fe 3+ [ 68 ]. However, in this system there are no regular relationships between the transesterification and the fluorescence behavior of the polymer.…”

Section: Polymeric Emissive Materials Based On Transesterificationmentioning

confidence: 99%

Polymeric Emissive Materials Based on Dynamic Covalent Bonds

Zheng

2022

Molecules

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Dynamic covalent polymers, composed of dynamic covalent bonds (DCBs), have received increasing attention in the last decade due to their adaptive and reversible nature compared with common covalent linked polymers. Incorporating the DCBs into the polymeric material endows it with advanced performance including self-healing, shape memory property, and so forth. However, the emissive ability of such dynamic covalent polymeric materials has been rarely reviewed. Herein, this review has summarized DCBs-based emissive polymeric materials which are classified according to the different types of DCBs, including imine bond, acylhydrazone bond, boronic ester bond, dynamic C-C bond, as well as the reversible bonds based on Diels–Alder reaction and transesterification. The mechanism of chemical reactions and various stimuli-responsive behaviors of DCBs are introduced, followed by typical emissive polymers resulting from these DCBs. By taking advantage of the reversible nature of DCBs under chemical/physical stimuli, the constructed emissive polymeric materials show controllable and switchable emission. Finally, challenges and future trends in this field are briefly discussed in this review.

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A renewable dynamic covalent network based on itaconic anhydride crosslinked polyglycerol: Adaptability, UV blocking and fluorescence

Cited by 22 publications

References 39 publications

Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

Polymer Carbon Nanodots: A Novel Electrochemiluminophore for Dual Mode Detection of Ferric Ions

Polymeric Emissive Materials Based on Dynamic Covalent Bonds

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