Thermal sensitive fluorescent hyperbranched polymer without fluorophores

Wang, Pingli; Wang, Xin; Meng, Kun; Hong, Song; Liu, Xin; Cheng, He; Han, Charles C.

doi:10.1002/pola.22692

Cited by 32 publications

(18 citation statements)

References 31 publications

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“…[5][6][7][8][9][10][11] In comparison to dendritic polymer with well-defined structure, the synthesis of HBPs can be performed through one-pot approach with low-cost, in which multi-step reactions can be carried out without separation of intermediates when get the targeted HBPs. 1-4 Compared with the linear polymers, HBPs have been demonstrated tremendous properties superiority of relatively low melting/solution viscosity, good solubility and high functionality.…”

Section: Introductionmentioning

confidence: 99%

One-pot approach to synthesize hyperbranched poly(thiol–ether amine) (hPtEA) through sequential “thiol–ene” and “epoxy–amine” click reactions

et al. 2015

Polym. Chem.

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We here demonstrated a novel strategy of one-pot approach to synthesize hyperbranched poly (thiol-ether amine) (hPtEA) through sequential "thiol-ene" and "epoxy-amine" click reaction, both of which were well traced by the in-situ 1 H-NMR spectra. The obtained hPtEA with high branching degree (DB) of 0.83 and molecular weight (M n ) of 8.6Х10 3 was comprised of large amount of hydroxyl groups in the backbone and amino groups in the periphery. Moreover, hPtEA could be further functionalized orthogonally due to the difference in the chemistry between hydroxyl and amino group. So fluorescent anthracene (AN) and carboxyl (SA) groups were introduced to the periphery and backbone of hPtEA, respectively, and the amphiphilic and zwitterionic hPtEA (SA-hPtEA-AN) were obtained. The resulting SA-hPtEA-AN could self-assemble into microsphere in aqueous solution with uniformed size of 750 nm in diameter, which was further cross-linked through photo-dimerization of AN groups. The microgel of SA-hPtEA-AN is fluorescent and responsive to environmental stimulus such as temperature and pH, and can be used in the encapsulation and controlled release of guest molecules. In addition, the controlled release of guest molecules from microgel of SA-hPtEA-AN can be monitored by its fluorescence change.

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Section: Introductionmentioning

confidence: 99%

One-pot approach to synthesize hyperbranched poly(thiol–ether amine) (hPtEA) through sequential “thiol–ene” and “epoxy–amine” click reactions

et al. 2015

Polym. Chem.

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“…At the same time, responsive polymers with dendritic and hyperbranched structure have became great interest due to their three‐dimensional globular architecture and unique properties, such as low viscosity, good solubility, and high functionality, which can be further modified 21–23. Compared with dendritic structure, hyperbranched‐responsive polymers have attracted more considerable attention due to their relative easy preparation.…”

Section: Introductionmentioning

confidence: 99%

Multistimuli‐responsive hyperbranched poly(ether amine)s

Yu¹,

Jiang²,

Yin³

et al. 2010

J. Polym. Sci. A Polym. Chem.

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Multistimuli-responsive hyperbranched poly(ether amine)s (hPEAs) were successfully synthesized through nucleophilic addition/ring-opening reaction of commercial diglycidyl ether and amine via one-pot synthesis. In aqueous solution, these hPEAs exhibited very sharp response to temperature, pH, and ionic strength, with well-tunable cloud point (CP). Through changing the poly(ethylene oxide) (PEO) chain content of hPEAs, pH, and ionic strength, the CP could be adjustable from 35 to 100 C, and increased with the increasing of PEO content, the decreasing of pH and ionic strength. The CP of hPEAs aqueous solution presents a linear relationship to the PEO con-tent in pH range from 6.6 to 8.0. Dynamic light scattering (DLS) investigation indicated that these hPEAs dispersed in aqueous solution to form the stable nanomicelles, whose aggregation can be controlled by temperature, pH, and ionic strength. Moreover, the obtained hPEAs contain reactive amino groups in periphery and hydroxyl groups inside, which can be further functionalized. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: [4252][4253][4254][4255][4256][4257][4258][4259][4260][4261] 2010

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“…Han and coworkers [78] reported an amphiphilic hyperbranched PEI (hb-P12) capping with cyclohexane (Scheme 10). The PL intensity of hb-P12 has something to do with the amount of end groups.…”

Section: Ph Responsive Fhbpsmentioning

confidence: 98%

“…hb-P12 is an amphipathic polymer, which has a lower critical solution temperature (LCST) and thus is thermal sensitive (see Scheme 10) [78]. Figure 24 shows the changes of PL intensity (I em ) of hb-P12 and apparent molecular weight (M w,app ) with temperature.…”

Section: Thermal Sensitive Fhbpsmentioning

confidence: 98%

Stimulus responsive fluorescent hyperbranched polymers and their applications

et al. 2010

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Fluorescent hyperbranched polymers (FHBPs), which combine the versatile fluorescent property with unique characteristics of hyperbranched architecture, are desirable candidates for stimulus responsive materials. This review demonstrates the structure and environment-dependent emission behaviors of a series of FHBPs. AEE active FHBPs showing opposite performance to ACQ effect are used to sensitively detect explosives and a superamplification effect is found. Specially designed FHBPs can complex with metal ions, leading to fluorescence turn-off due to complex quenching effect. The protonation of amino-containing FHBPs exhibits pH-dependent fluorescence responses to solution acidity. Some FHBPs containing responsive moieties are photo-and thermo-sensitive, and show potential applications as smart materials. fluorescent hyperbranched polymer, explosives and metal ions detection, pH responsive, optical and thermal sensitive

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Thermal sensitive fluorescent hyperbranched polymer without fluorophores

Cited by 32 publications

References 31 publications

One-pot approach to synthesize hyperbranched poly(thiol–ether amine) (hPtEA) through sequential “thiol–ene” and “epoxy–amine” click reactions

One-pot approach to synthesize hyperbranched poly(thiol–ether amine) (hPtEA) through sequential “thiol–ene” and “epoxy–amine” click reactions

Multistimuli‐responsive hyperbranched poly(ether amine)s

Stimulus responsive fluorescent hyperbranched polymers and their applications

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