Advanced Inorganic Nanoarchitectures from Oriented Self‐Assembly

Lu, Chenguang; Tang, Zhiyong

doi:10.1002/adma.201502869

Cited by 79 publications

(74 citation statements)

References 108 publications

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“…[3,4,[58][59][60][61][62] The growth of nanocrystals initiates with a nucleation event, and proceeds toward larger crystallites using the atoms from the precursors. [3,4,[58][59][60][61][62] The growth of nanocrystals initiates with a nucleation event, and proceeds toward larger crystallites using the atoms from the precursors.…”

Section: Preparation Of Stable Nanomaterials Dispersionsmentioning

confidence: 99%

“…At a later stage, surface effects lead to Ostwald ripening (OR), in which small crystals shrink while the larger ones continue to grow, leading to a wide distribution of sizes. [60] The kinetic manipulation of reaction agents and conditions leads to the growth of different nanocrystals, including quantum dots, nanoparticles, nanorods, and nanosheets. [5,57,64] These techniques effectively suppress uncontrolled nanocrystal growth, and lead to the production of relatively uniform nanocrystals with tight size and shape distributions.…”

Section: Preparation Of Stable Nanomaterials Dispersionsmentioning

confidence: 99%

“…[2,10,300] The distance between the nanocrystal cores is usually dictated by the surface ligand size, which exponentially influences the charge-tunneling rate. [60,300,301] X-type ligands are anionic one-electron donors (e.g., carboxylates: RCOO − , thiolates: RS − , and phosphonates: RPO(OH)O − ), L-type ligands are neutral two-electron donors or Lewis bases (e.g., amines: RNH 2 , phosphines: R 3 P, and phosphine oxides: R 3 PO), and Z-type ligands are neutral two-electron acceptors or Lewis acids (e.g., Pb(OOCR) 2 , CdCl 2 , and AlCl 3 ). [10] This strong coupling enables charge transport evolving from low-mobility hopping transport between localized electronic states to high-mobility band-like transport through delocalized electronic states.…”

Section: Semiconducting Inorganic Nanocrystal Solidsmentioning

confidence: 99%

“…[2] Ultimately, at minimum interparticle distances, strong coupling occurs with wavefunctions of neighboring nanocrystals overlapping to form an extended electronic state. [60,300,301] Ligand exchange is more favorable within the same category of ligands, and is affected by solvent polarity, the ligand affinities to nanocrystal surfaces, and the relative abundance of incoming and outgoing ligands. [10] This transition and the resulting dramatic improvement in charge-carrier mobility have been realized by the exchange of compact ligands that replace the long ligands involved in nanocrystal synthesis.…”

Section: Semiconducting Inorganic Nanocrystal Solidsmentioning

confidence: 99%

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Assembly and Electronic Applications of Colloidal Nanomaterials

2016

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Artificial solids and thin films assembled from colloidal nanomaterials give rise to versatile properties that can be exploited in a range of technologies. In particular, solution-based processes allow for the large-scale and low-cost production of nanoelectronics on rigid or mechanically flexible substrates. To achieve this goal, several processing steps require careful consideration, including nanomaterial synthesis or exfoliation, purification, separation, assembly, hybrid integration, and device testing. Using a ubiquitous electronic device - the field-effect transistor - as a platform, colloidal nanomaterials in three electronic material categories are reviewed systematically: semiconductors, conductors, and dielectrics. The resulting comparative analysis reveals promising opportunities and remaining challenges for colloidal nanomaterials in electronic applications, thereby providing a roadmap for future research and development.

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Section: Preparation Of Stable Nanomaterials Dispersionsmentioning

confidence: 99%

Section: Preparation Of Stable Nanomaterials Dispersionsmentioning

confidence: 99%

Section: Semiconducting Inorganic Nanocrystal Solidsmentioning

confidence: 99%

Section: Semiconducting Inorganic Nanocrystal Solidsmentioning

confidence: 99%

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Assembly and Electronic Applications of Colloidal Nanomaterials

2016

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“…Self-assembly is ubiquitous in biological systems, in which it allows the efficient synthesis of complex network structures in a mild condition. [27][28][29][30] In addition, biopolymeric materials are similar to the bio-tissues, which provides great advantages for gels formation and future biomedical engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Synthetic self-assembled homogeneous network hydrogels with high mechanical and recoverable properties for tissue replacement

Liu

et al. 2016

J. Mater. Chem. B

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Development of hydrogels with highly mechanical and recoverable properties under physiological conditions is of great importance for broadening and improving their potential applications in load-bearing artificial soft tissues. Inspired by the self-assembly of chemistry entities, the homogeneous network hydrogels, which contain over 90 wt% of water, were synthesized from covalent cross-links of poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP) triggered by microwave-assisted treatment. Structurally homogeneous network results in a evenly distributed stress that endure high strains with minimal energy dissipation, which enable the hydrogels to withstand up to 1.16 MPa of tensile stress, over seven-fold of stretch length with negligible hysteresis, and sustain cyclic compression following high amplitude deformation. It is of importance for tissue replacement that the hydrogels retain these excellent properties under physiological conditions.

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Directing Arrowhead Nanorod Dimers for MicroRNA In Situ Raman Detection in Living Cells

et al. 2020

Adv Funct Materials

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Directed self-assembled nanomaterials with biological applications have attracted great interest. Here, arrowhead gold nanorod (NR) dimers with side-by-side and end-to-end motifs (known as AHSBS and AHETE dimers, respectively) presented based on selective modification of arrowhead NRs with DNA and polyethylene glycol, possessing intense surface enhanced Raman scattering (SERS) signals, are assembled for in situ intracellular microRNA detection. The arrowhead NR dimers are capable of recognizing target microRNA in a sequence-specific manner as Raman signals significantly enhanced within dimers with both motifs. Following recognition, the dimers gradually disassemble, resulting in decreased SERS signals to achieve effective in situ Raman imaging and quantify the detection of target microRNA. The SERS intensity shows a linear relationship with intracellular target microRNA and a limit of detection of 0.011 amol ng RNA −1 for the AHETE dimer and 0.023 amol ng RNA −1 for the AHSBS dimer, respectively. The sensitivity for AHETE dimers is ≈2.1 times higher than that for AHSBS dimers, which is attributed to the small quantity of recognized molecules and stronger electrical enhancement, which causes greater SERS signals in the AHETE dimers. This approach opens up a new avenue for directed nanomaterials assembly and biological detection in living cells.

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Advanced Inorganic Nanoarchitectures from Oriented Self‐Assembly

Cited by 79 publications

References 108 publications

Assembly and Electronic Applications of Colloidal Nanomaterials

Assembly and Electronic Applications of Colloidal Nanomaterials

Synthetic self-assembled homogeneous network hydrogels with high mechanical and recoverable properties for tissue replacement

Directing Arrowhead Nanorod Dimers for MicroRNA In Situ Raman Detection in Living Cells

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