Fluorescent supracolloidal polymer chains with quantum dots

Chae, Seungyong; Lee, Sang-Hwa; Kim, Kyung‐Tae; Jang, Segeun; Sohn, Byeong‐Hyeok

doi:10.1039/c6cc01218c

Cited by 28 publications

(32 citation statements)

References 36 publications

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“…We observed a preference for the formation of di- and triblock copolymers with a mean block length of roughly 3–4 μm, consistent with the formation of poly[( S -1 ) C-635 - co -( S -2 ) C-552 ]. A similar segregation has only been observed for supracolloidal polymeric chains 48 , 49 and supramolecular amyloid fibers. 50 To quantify the segregation of blocks within single fibers, we counted the number of red and green single-molecule localizations in each block.…”

Section: Resultssupporting

confidence: 73%

Painting Supramolecular Polymers in Organic Solvents by Super-resolution Microscopy

et al. 2018

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Despite the rapid development of complex functional supramolecular systems, visualization of these architectures under native conditions at high resolution has remained a challenging endeavor. Super-resolution microscopy was recently proposed as an effective tool to unveil one-dimensional nanoscale structures in aqueous media upon chemical functionalization with suitable fluorescent probes. Building upon our previous work, which enabled photoactivation localization microscopy in organic solvents, herein, we present the imaging of one-dimensional supramolecular polymers in their native environment by interface point accumulation for imaging in nanoscale topography (iPAINT). The noncovalent staining, typical of iPAINT, allows the investigation of supramolecular polymers’ structure in situ without any chemical modification. The quasi-permanent adsorption of the dye to the polymer is exploited to identify block-like arrangements within supramolecular fibers, which were obtained upon mixing homopolymers that were prestained with different colors. The staining of the blocks, maintained by the lack of exchange of the dyes, permits the imaging of complex structures for multiple days. This study showcases the potential of PAINT-like strategies such as iPAINT to visualize multicomponent dynamic systems in their native environment with an easy, synthesis-free approach and high spatial resolution.

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Section: Resultssupporting

confidence: 73%

Painting Supramolecular Polymers in Organic Solvents by Super-resolution Microscopy

et al. 2018

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“…In addition, the doping concentration of materials usually is rather low, which limits the range of the emission shift as well as the applications in optoelectronic devices such as LEDs and lasers . In order to obtain high doping concentration and homogeneous functional composites, researchers have exploited various methods including covering miscible nanoparticles with matrix, grafting polymer chains, modification of the surfactants, and kinetic entrapment . Compared with the above methods, chemical copolymerization is a feasible and effective way to realize covalent linking between matrix and nanomaterials, such as modification with polyhedral oligomeric silsesquioxanes (POSS), and SiO 2 …”

Section: Introductionmentioning

confidence: 99%

Controllable Photoluminescent and Nonlinear Optical Properties of Polymerizable Carbon Dots and Their Arbitrary Copolymerized Gel Glasses

Ren

Sun

Wang

et al. 2018

Advanced Optical Materials

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In this work, an efficient method is developed to prepare silane‐functionalized red‐emissive carbon dots and carbon dots gel glasses with arbitrary loading fraction (0–100%). The as‐prepared materials possess strong photoluminescence and significant third‐order nonlinear optical performances. The optical properties can be tuned by either changing solvents and pH of the solution or adjusting the loading fractions of carbon dots in gel glasses. In particular, the photoluminescence of the carbon dots and their polymerized glasses can be linearly modulated from yellow to red emission by increasing the loading fraction of carbon dots or the polarity of solvent. It is also found that the chemical copolymerization leads to superior optical properties of gel glasses to that of the carbon dots solution, because the copolymerization endows stable immobilization of carbon dots in a rigid matrix. This study provides a feasible method to prepare optoelectronic hybrid materials and devices.

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“…To our knowledge, this is the first time that correlated topography and multicolor super‐resolution imaging is achieved. This hybrid nanoscopy technique has great potential to study multifunctional hybrid materials, especially since nanocrystals are characterized by the presence of a significant dark fraction population. In addition, features such as fibril twisting are extremely challenging to study by super‐resolution fluorescence imaging and relatively simpler with AFM.…”

mentioning

confidence: 99%

“…Other nanomaterials such as luminescent nanoparticle arrays or chains would also benefit from this correlative technique,[19a,20] especially multicolor fluorescent nanosystems where different nanoparticles emit in different colors or are combined with organic fluorophores . Moreover, super‐resolution imaging in combination with the nanomanipulation capabilities of AFM[10c,21] offers great promise to understand potential relations between optical and mechanical properties at the nanoscale in hybrid nanomaterials.…”

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confidence: 99%

Hybrid Nanoscopy of Hybrid Nanomaterials

Bondia

Jurado

Casado

et al. 2017

Small

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The combination of complementary techniques to characterize materials at the nanoscale is crucial to gain a more complete picture of their structure, a key step to design and fabricate new materials with improved properties and diverse functions. Here it is shown that correlative atomic force microscopy (AFM) and localization-based super-resolution microscopy is a useful tool that provides insight into the structure and emissive properties of fluorescent β-lactoglobulin (βLG) amyloid-like fibrils. These hybrid materials are made by functionalization of βLG with organic fluorophores and quantum dots, the latter being relevant for the production of 1D inorganic nanostructures templated by self-assembling peptides. Simultaneous functionalization of βLG fibers by QD655 and QD525 allows for correlative AFM and two-color super-resolution fluorescence imaging of these hybrid materials. These experiments allow the combination of information about the topography and number of filaments that compose a fibril, as well as the emissive properties and nanoscale spatial distribution of the attached fluorophores. This study represents an important step forward in the characterization of multifunctionalized hybrid materials, a key challenge in nanoscience.

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Fluorescent supracolloidal polymer chains with quantum dots

Cited by 28 publications

References 36 publications

Painting Supramolecular Polymers in Organic Solvents by Super-resolution Microscopy

Painting Supramolecular Polymers in Organic Solvents by Super-resolution Microscopy

Controllable Photoluminescent and Nonlinear Optical Properties of Polymerizable Carbon Dots and Their Arbitrary Copolymerized Gel Glasses

Hybrid Nanoscopy of Hybrid Nanomaterials

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