Surface ligands in synthesis, modification, assembly and biomedical applications of nanoparticles

Ling, Daishun; Hackett, Michael; Hyeon, Taeg Hwan

doi:10.1016/j.nantod.2014.06.005

Cited by 178 publications

(107 citation statements)

References 184 publications

(227 reference statements)

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“…[25,[56][57][58][59][60][61][62][63][64] Since each facet has au nique spatial arrangement of the atoms (e.g. [25,[56][57][58][59][60][61][62][63][64] Since each facet has au nique spatial arrangement of the atoms (e.g.…”

Section: The Influence Of Capping Agentsmentioning

confidence: 99%

Seed‐Mediated Growth of Colloidal Metal Nanocrystals

et al. 2016

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Seed-mediated growth is a powerful and versatile approach for the synthesis of colloidal metal nanocrystals. The vast allure of this approach mainly stems from the staggering degree of control one can achieve over the size, shape, composition, and structure of nanocrystals. These parameters not only control the properties of nanocrystals but also determine their relevance to, and performance in, various applications. The ingenuity and artistry inherent to seed-mediated growth offer extensive promise, enhancing a number of existing applications and opening the door to new developments. This Review demonstrates how the diversity of metal nanocrystals can be expanded with endless opportunities by using seeds with well-defined and controllable internal structures in conjunction with a proper combination of capping agent and reduction kinetics. New capabilities and future directions are also highlighted.

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Section: The Influence Of Capping Agentsmentioning

confidence: 99%

Seed‐Mediated Growth of Colloidal Metal Nanocrystals

et al. 2016

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“…116 For example, the size and shape of the resulting product of synthesis can be controlled by changing the length of carboxylic acids 66 used as stabilizers. It was reported that longer carboxylic acids used in the hot injection synthesis leads to smaller CdS particles while shorter acids lead to nanotetrapods.…”

Section: High-temperature Synthesis In Organic Solvents (Hot Injection)mentioning

confidence: 99%

Anisotropic 3D Colloidal Quantum Nanostructures

Govan¹,

Spiridonov

Fëdorov

et al. 2016

Encyclopedia of Inorganic and Bioinorganic Chemistry

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3D anisotropic semiconductor nanostructures have unique physical properties including a high aspect ratio, optical polarization anisotropy, polarized photoluminescence, giant birefringence, and many others. Theoretical studies of anisotropic semiconductor nanostructures have shown that their electronic and optical properties dramatically depend on their shape and size. These factors open up an access to new generation of optical, optoelectronic, and light‐harvesting devices. In this article, we demonstrate advances in the development of new 3D quantum‐confined colloidal nanostructures such as semiconductor nanotetrapods, nanomultipods, nanoflowers, nanostar and other shapes. We present the latest progress in various colloidal chemistry approaches for the synthesis of these nanostructures. We also consider the self‐organization of quantum dots in 3D superparticles. We discuss structure–property relations as well as the corresponding potential applications of these nanomaterials in light‐harvesting, energy‐conversion devices, sensing, photocatalysis, biology, and other areas. Finally, we provide conclusions and an outlook for the future development of anisotropic semiconductor nanomaterials and their technological prospects.

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“…[1,2] Poly(N-isopropylacrylamide) (PNIPAM) is aw idely studied thermoresponsive polymer that undergoes ap hase transition from awater-swollen state to aglobular state when heating its aqueous solution above the lower critical solution temperature (LCST, % 32 8 8C) of PNIPAM. [10] Moreover,t he PNIPAM ligands tethered on the NP surface by the graftingfrom/grafting-to approach often experience ad ynamic binding characteristic because of the noncovalent interaction between PNIPAM and the NP. [4][5][6][7] However,t his approach requires ah igh selectivity between the inorganic NP core and the functional end-groups in grafted molecules, [8,9] leading to tedious synthetic procedures.…”

Section: Introductionmentioning

confidence: 99%

Resolving Optical and Catalytic Activities in Thermoresponsive Nanoparticles by Permanent Ligation with Temperature‐Sensitive Polymers

et al. 2019

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Thermoresponsive nanoparticles (NPs) represent an important hybrid material comprising functional NPs with temperature-sensitive polymer ligands.S trikingly,s ignificant discrepancies in optical and catalytic properties of thermoresponsive noble-metal NPs have been reported, and have yet to be unraveled. Reported herein is the crafting of Au NPs, intimately and permanently ligated by thermoresponsive poly(N-isopropylacrylamide) (PNIPAM), in situ using as tarlike blockc opolymer nanoreactor as model system to resolve the paradox noted above. As temperature rises,p lasmonic absorption of PNIPAM-capped Au NPs red-shifts with increased intensity in the absence of free linear PNIPAM, whereas ag reater red-shift with decreased intensity occurs in the presence of deliberately introduced linear PNIPAM. Remarkably,t he absence or addition of free linear PNIPAM also accounts for non-monotonic or switchable on/off catalytic performance,respectively,ofPNIPAM-capped Au NPs.

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Surface ligands in synthesis, modification, assembly and biomedical applications of nanoparticles

Cited by 178 publications

References 184 publications

Seed‐Mediated Growth of Colloidal Metal Nanocrystals

Seed‐Mediated Growth of Colloidal Metal Nanocrystals

Anisotropic 3D Colloidal Quantum Nanostructures

Resolving Optical and Catalytic Activities in Thermoresponsive Nanoparticles by Permanent Ligation with Temperature‐Sensitive Polymers

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