Enhanced photoluminescence properties of a carbon dot system through surface interaction with polymeric nanoparticles

During the past decade, increasing attention has been paid to fluorescent carbon dots (CDs) due to their unique photoluminescence (PL) properties. As synthetic methods gradually develop, many post-functionalization strategies have been developed to enhance the PL of CDs. However, in most cases, the PL enhancement was less than 10-fold with multistep modification processes. In this work, a facile and efficient post-functionalization strategy was successfully applied to enhance the PL intensity of CDs dramatically up to 69 times by surfactants at room temperature for the first time. Furthermore, the mechanism of surfactant-induced PL enhancement of CDs was investigated and in vivo bioimaging was performed. The results demonstrated that electrostatic/non-electrostatic interactions between CDs and surfactants could effectively lower the vibration and rotation of CDs, increase radiative decay processes and, thus, enhance the PL of CDs. This finding may provide new insights into the strategies for enhancing the PL of CDs, further broadening their potential applications.

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“…Momper et al. reported that surface interactions of CDs with polymeric nanoparticles could enhance the PL of CDs . Anilkumar et al.…”

Section: Methodsmentioning

confidence: 99%

Photoluminescence Enhancement of Carbon Dots by Surfactants at Room Temperature

Ren

Chen

et al. 2018

Chemistry A European J

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Section: Tuning Optical Properties With Polymersmentioning

confidence: 99%

“…An alternative approach for enhanced photoluminescence is described by Momper and co-workers [27]. Whereas in typical carbon dots, polymers are used to form a protective cell, in Reference [27] carbon dots are created in situ or attached by mixing onto polystyrene (PS) nanoparticles. In fact, as assumed by experimental data, in situ formation leads to covalent attachment of the carbon dots on the PS nanoparticles and mixing provides composites by physical interactions, i.e., electrostatic attraction of the dots by the negatively charged PS nanoparticles.…”

Section: Tuning Optical Properties With Polymersmentioning

confidence: 99%

Tuning Carbon Dots’ Optoelectronic Properties with Polymers

Dimos

2018

Polymers

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Due to their unique properties of photoluminescence, biocompatibility, photostability, ease of preparing, and low cost, carbon dots have been studied extensively over the last decade. Soon after their discovery, it was realized that their main optical attributes may be protected, enhanced, and tuned upon proper surface passivation or functionalization. Therefore, up to date, numerous polymers have been used for these purposes, resulting to higher-quality carbon dots regarding their quantum yield or further emission-related aspects and compared to the primitive, bare ones. Hence, this review aims to clarify the polymers’ role and effect on carbon dots and their features focusing on the quality characteristics of their photoluminescence upon passivation or functionalization. Given in fact the numbers of relevant publications, emphasis is given on recent articles capturing the latest advances for polymers in carbon dots for expanding emission lifetimes, advancing quantum yields, tuning emission wavelengths, enhancing specific spectral range absorption, and tailoring optoelectronic properties in general.

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“…Synthetic polymers can be obtained with great uniformity, accurate molecular weight, controlled topology, and precisely selected end groups [11]. Moreover, the combination of polymeric materials with, for instance, dendrimers [12,13,14], liposomes [15,16], or inorganic nanoparticles (INPs) such as silicon dioxide nanoparticles [17], magnetic nanoparticles [18], plasmonic nanoparticles [19], carbon nanotubes [20], carbon dots [21], fullerene [22] or others, gives hybrid nanomaterials with additional and extraordinary properties. For the case of INPs, examples of these enhanced properties are the magnetic behavior obtained by combining magnetic nanoparticles with polymer matrices, or the more reliably protection of drug cargo displayed by mesoporous silica/polymer nanoparticles compared with purely organic nanomaterials [23].…”

Section: Introductionmentioning

confidence: 99%

Design, Synthesis and Architectures of Hybrid Nanomaterials for Therapy and Diagnosis Applications

2018

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Hybrid nanomaterials based on inorganic nanoparticles and polymers are highly interesting structures since they combine synergistically the advantageous physical-chemical properties of both inorganic and polymeric components, providing superior functionality to the final material. These unique properties motivate the intensive study of these materials from a multidisciplinary view with the aim of finding novel applications in technological and biomedical fields. Choosing a specific synthetic methodology that allows for control over the surface composition and its architecture, enables not only the examination of the structure/property relationships, but, more importantly, the design of more efficient nanodevices for therapy and diagnosis in nanomedicine. The current review categorizes hybrid nanomaterials into three types of architectures: core-brush, hybrid nanogels, and core-shell. We focus on the analysis of the synthetic approaches that lead to the formation of each type of architecture. Furthermore, most recent advances in therapy and diagnosis applications and some inherent challenges of these materials are herein reviewed.

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Enhanced photoluminescence properties of a carbon dot system through surface interaction with polymeric nanoparticles

Cited by 19 publications

References 26 publications

Photoluminescence Enhancement of Carbon Dots by Surfactants at Room Temperature

Photoluminescence Enhancement of Carbon Dots by Surfactants at Room Temperature

Tuning Carbon Dots’ Optoelectronic Properties with Polymers

Design, Synthesis and Architectures of Hybrid Nanomaterials for Therapy and Diagnosis Applications

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