A supramolecular strategy based on molecular dipole moments for high-quality covalent organic frameworks

Anchoring nanoscale building blocks, regardless of their shape, into specific arrangements on surfaces presents a significant challenge for the fabrication of next-generation chip-based nanophotonic devices. Current methods to prepare nanocrystal arrays lack the precision, generalizability, and postsynthetic robustness required for the fabrication of device-quality, nanocrystal-based metamaterials [Q. Y. Lin et al. Nano Lett. 15, 4699–4703 (2015); V. Flauraud et al., Nat. Nanotechnol. 12, 73–80 (2017)]. To address this challenge, we have developed a synthetic strategy to precisely arrange any anisotropic colloidal nanoparticle onto a substrate using a shallow-template-assisted, DNA-mediated assembly approach. We show that anisotropic nanoparticles of virtually any shape can be anchored onto surfaces in any desired arrangement, with precise positional and orientational control. Importantly, the technique allows nanoparticles to be patterned over a large surface area, with interparticle distances as small as 4 nm, providing the opportunity to exploit light–matter interactions in an unprecedented manner. As a proof-of-concept, we have synthesized a nanocrystal-based, dynamically tunable metasurface (an anomalous reflector), demonstrating the potential of this nanoparticle-based metamaterial synthesis platform.

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Preparation and Characterization of Stable Biphase TiO2Photocatalyst with High Crystallinity, Large Surface Area, and Enhanced Photoactivity

The Journal of Physical Chemistry C ◽

10.1021/jp710283p ◽

2008 ◽

Vol 112 (8) ◽

pp. 3083-3089 ◽

Cited By ~ 249

Author(s):

Guohui Tian ◽

Honggang Fu ◽

Liqiang Jing ◽

Baifu Xin ◽

Kai Pan

Keyword(s):

Surface Area ◽

Large Surface Area ◽

High Crystallinity

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Efficient visible light-induced degradation of phenol on N-doped anatase TiO2 with large surface area and high crystallinity

Applied Surface Science ◽

10.1016/j.apsusc.2010.01.016 ◽

2010 ◽

Vol 256 (12) ◽

pp. 3740-3745 ◽

Cited By ~ 26

Author(s):

Guohui Tian ◽

Yajie Chen ◽

Kai Pan ◽

Dejun Wang ◽

Wei Zhou ◽

...

Keyword(s):

Visible Light ◽

Surface Area ◽

Anatase Tio2 ◽

Large Surface Area ◽

High Crystallinity

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Medium-size polarized basis sets for high-level correlated calculations of molecular electric properties

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19881995 ◽

1988 ◽

Vol 53 (9) ◽

pp. 1995-2016 ◽

Cited By ~ 878

Author(s):

Andrzej J. Sadlej

Keyword(s):

Intermolecular Interactions ◽

Dipole Moments ◽

Electric Properties ◽

Basis Set ◽

Basis Sets ◽

Medium Size ◽

Molecular Dipole ◽

Large Molecules ◽

Polarized Basis Sets ◽

High Level

The basis set polarization approach is applied to the generation of medium-size polarized GTO/CGTO basis sets for accurate calculations of molecular dipole moments and polarizabilities. The polarized basis sets determined in this paper for H and C through F are employed in SCF HF and MBPT calculations of dipole moments and polarizabilities of FH, H2O, NH3, and CH4. The excellent results obtained at both the SCF HF and MBPT(4) levels of approximation indicate that the present basis sets can be employed for the accurate high-level correlated studies of relatively large molecules The use of those basis sets in calculations of intermolecular interactions is also discussed.

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Fabrication of anatase/rutile hierarchical nanospheres with enhanced n/p type gas sensing performance at room temperature

RSC Advances ◽

10.1039/c6ra10921g ◽

2016 ◽

Vol 6 (62) ◽

pp. 57722-57726 ◽

Cited By ~ 3

Author(s):

Shaofeng Shao ◽

Shimin Wang ◽

Fan Jiang ◽

Hongyan Wu ◽

Tao Wu ◽

...

Keyword(s):

Surface Area ◽

Room Temperature ◽

Gas Sensing ◽

Large Surface Area ◽

High Crystallinity ◽

Enhanced Sensitivity ◽

Sensitivity And Selectivity ◽

P Type ◽

Sensing Performance

Porous Pt decorated anatase/rutile sensing nanospheres with high crystallinity and large surface area synthesized through psHT treatment present enhanced sensitivity and selectivity to VOCs vapor at room temperature.

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Polyglycerol-based hydrogels and nanogels: from synthesis to applications

Future Medicinal Chemistry ◽

10.4155/fmc-2020-0205 ◽

2021 ◽

Author(s):

Meena Kumari ◽

Suchita Prasad ◽

Ljiljana Fruk ◽

Badri Parshad

Keyword(s):

Extracellular Matrix ◽

Surface Area ◽

Biomedical Applications ◽

Chemical Properties ◽

Building Blocks ◽

High Water ◽

Large Surface Area ◽

High Water Content ◽

Porous Network ◽

And Chemical Properties

Hydrogels and nanogels have emerged as promising materials for biomedical applications owing to their large surface area and tunable mechanical and chemical properties. Their large surface area is well suited for bioconjugation, whilst the interior porous network can be utilized for the transport of valuable biomolecules. The use of biocompatible hydrophilic building blocks/linkers for the preparation of hydrogels and nanogels not only avoids undesired side effects within the biological system, but also retains high water content, thereby creating an environment which is very similar to extracellular matrix. Their tunable multivalency and hydrophilicity and excellent biocompatibility, together with ease of functionalization, makes polyglycerol macromonomers well suited for synthesizing cross-linked networks that can be used as extracellular matrix mimics. Here we provide an overview of the synthesis of polyglycerol-based hydrogels and nanogels for various biomedical applications.

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