Fluorescence emission from hyperbranched polycarbonate without conventional chromohpores

Du, Yuqun; Feng, Yuanbo; Yan, Hongxia; Huang, Wei; Yuan, Luyao; Bai, Lihua

doi:10.1016/j.jphotochem.2018.06.031

Cited by 17 publications

(12 citation statements)

References 32 publications

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“…Water at a flow rate of 0.30 mL min −1 was used as eluent. 13 C NMR (101 MHz) and 1 H NMR (400 MHz) spectra were recorded in DMSOd 6 solvent as an internal standard using a Bruker Avance 400 MHz spectrometer. FTIR spectra of the three samples were collected using a Nicolet 5700 FTIR spectrometer ranging from 4000 to 400 cm −1 .…”

Section: Methodsmentioning

confidence: 99%

“…The obtained polymer is a faint yellow watersoluble viscous fluid. Details of 1 H and 13 C NMR spectroscopy data, gel permeation chromatography result, and Fourier transform infrared (FTIR) study can be found in the Supporting Information (Figure S1−S6, Supporting Information).…”

Section: Structural Characterizationmentioning

confidence: 99%

“…[4][5][6] Hyperbranched and dendritic poly(amido amine) s are the first and most investigated unconventional polymers. [6][7][8][9] Since then, polymers containing electron-rich heteroatoms, such as poly(amino ester) (PAE), [6][7][8][9][10] hyperbranched polysiloxane, [11] polyacrylonitrile, [12] and polycarbonate, [13] have been reported.…”

Section: Introductionmentioning

confidence: 99%

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Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Bai

Yan

Wang

et al. 2020

Macro Materials & Eng

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Nonconventional luminogens without conjugated chromophores have attracted much interest for their intriguing fluorescence and potential wide applications. Their emission mechanism, however, remains an open question. Herein, hyperbranched poly(amino ester) (HPAE) with novel structure is synthesized through a simple one‐pot polycondensation reaction. The HPAE exhibits strong fluorescence and aggregation‐induced emission (AIE) characteristic. Transmission electron microscopy and theoretical calculation results demonstrate that the fluorescence is attributed from electron delocalization in the supramolecular self‐assemblies of HPAE. Meanwhile, supramolecular self‐assemblies, induced by the synergy effect of inter/intramolecular hydrogen bond and amphipathicity of HPAE, rigidify the molecule conformation, leading to enhanced fluorescence. Furthermore, the HPAE exhibits single‐color emission due to its generation of homogeneous electron delocalization. Interestingly, such HPAE shows multi‐stimuli‐responsive fluorescence to solvent, temperature, pH, and Fe3+. Therefore, this work not only provides an important step forward in exploring the emission mechanism of nonconventional luminogens, but also develops a multi‐functional unconjugated AIE probe.

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Section: Methodsmentioning

confidence: 99%

Section: Structural Characterizationmentioning

confidence: 99%

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Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Bai

Yan

Wang

et al. 2020

Macro Materials & Eng

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“…66 They also described the unprecedented strong blue photoluminescence characteristics of non-conjugated hyperbranched polycarbonates (HBPCs). The hyperbranched polycarbonates were synthesized via catalyst or solvent-free one-pot A 2 + B 3 transesterification reaction between diethyl carbonate and triol (glycerol 67 or trimethylolpropane 68 ). The resultant HBPC exhibited excitation wavelength-dependent and concentration-dependent emission behaviors in ethanol.…”

Section: Polymer Chemistry Reviewmentioning

confidence: 99%

Recent advances in the development and applications of nonconventional luminescent polymers

et al. 2020

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“…The synthesis of polymers with complex structures might make great sense in polymer science. Compared to traditional linear polymers, hyperbranched polymers (HBPs) have three-dimensional branched structures and exhibit unique features including low viscosity, abundant functional terminal groups, and good solubility. , A large number of terminal groups provide numerous sites to introduce distinctive features, such as targeting, prodrug, fluorescence, and photothermal/photodynamic functionalities, into the polymer backbone to realize the theranostic drug delivery system . Compared with dendritic polymers, HBPs are more accessible with a “one-pot” method that has simple synthesis and purification requirements .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Aliphatic Hyperbranched Polycarbonates via Organo-Catalyzed “A₁+B₂”-Ring-Opening Polymerization

et al. 2022

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Hyperbranched aliphatic polycarbonates (HBPCs) have attracted significant attention in the field of biomedical application owing to their abundant end groups, biocompatibility, and nontoxic degradation products. However, their practical application is hampered by tedious synthesis procedures. The present work described a novel organo-catalyzed “A1+B2”-ring-opening polymerization (ROP) using a monofunctional primary alcohol (A1) as an initiator and a bicyclic carbonate monomer (B2) for the straightforward synthesis of HBPCs under mild conditions. No gelation was observed up to 90% conversion of the cyclic carbonate ring. HBPCs with molar masses in the range from 7 to 20 kg/mol were obtained. Based on the “A1+B2”-ROP, HBPCs bearing a variety of functionalities including alkene, alkyne, aldehyde, furan, azide, and mPEG groups, which are of great significance in the field of click chemistry, have been successfully prepared by using functional alcoholic initiators. This polymerization strategy allowed for precise control over the HBPC structure: (1) the hyperbranched polymer (HBP) backbone can be adjusted by design of a bicyclic carbonate monomer with various linkages; (2) the use of an appropriate initiator leads to the introduction of functional end groups. Overall, the “A1+B2”-ROP provides an efficient method for preparing a variety of HBPs like hyperbranched polyester, polyether, polyphosphate, and poly(amino acid) with complex architectures in a single step.

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Fluorescence emission from hyperbranched polycarbonate without conventional chromohpores

Cited by 17 publications

References 32 publications

Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Recent advances in the development and applications of nonconventional luminescent polymers

Synthesis of Aliphatic Hyperbranched Polycarbonates via Organo-Catalyzed “A₁+B₂”-Ring-Opening Polymerization

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Fluorescence emission from hyperbranched polycarbonate without conventional chromohpores

Cited by 17 publications

References 32 publications

Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Supramolecular Hyperbranched Poly(amino ester)s with Homogeneous Electron Delocalization for Multi‐Stimuli‐Responsive Fluorescence

Recent advances in the development and applications of nonconventional luminescent polymers

Synthesis of Aliphatic Hyperbranched Polycarbonates via Organo-Catalyzed “A1+B2”-Ring-Opening Polymerization

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Synthesis of Aliphatic Hyperbranched Polycarbonates via Organo-Catalyzed “A₁+B₂”-Ring-Opening Polymerization