Tertiary Chiral Nanostructures from C‐H∙∙∙F Directed Assembly of Chiroptical Superatoms

2021 ◽  
Author(s):  
Hui Shen ◽  
Zhen Xu ◽  
Lingzheng Wang ◽  
Ying-Zi Han ◽  
Xianhu Liu ◽  
...  
Author(s):  
Hui Shen ◽  
Zhen Xu ◽  
Lingzheng Wang ◽  
Ying-Zi Han ◽  
Xianhu Liu ◽  
...  

2008 ◽  
Author(s):  
Sabrina Habtoun ◽  
Christian Bergaud ◽  
Monique Dilhan ◽  
David Bourrier

2017 ◽  
Author(s):  
Pedro M. R. Paulo ◽  
David Botequim ◽  
Agnieszka Jóskowiak ◽  
Sofia Martins ◽  
Duarte M. F. Prazeres ◽  
...  

<div> <div> <div> <p>We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally coupled plasmon mode to enhance the fluorescence emission of an organic red-emitting dye, Atto-655. The plasmon- enhanced fluorescence of this dye using dimers of 80 nm particles was measured at single molecule detection level. The top enhancement factors were above 1000-fold in 71% of the dimers within a total of 32 dimers measured, and, in some cases, they reached almost 4000-fold, in good agreement with model simulations. Additionally, fluorescence lifetime correlation analysis enabled the separation of enhanced from non-enhanced emission simultaneously collected in our confocal detection volume. This approach allowed us to recover a short relaxation component exclusive to enhanced emission that is attributed to the interaction of the dye with DNA in the interparticle gaps. </p> </div> </div> </div>


Small Methods ◽  
2021 ◽  
pp. 2001049
Author(s):  
Pengchao Sun ◽  
Tim Scharnweber ◽  
Parvesh Wadhwani ◽  
Kersten S. Rabe ◽  
Christof M. Niemeyer
Keyword(s):  

Langmuir ◽  
2017 ◽  
Vol 33 (30) ◽  
pp. 7503-7511 ◽  
Author(s):  
Jongmin Kim ◽  
Chang-Hyung Choi ◽  
Su-Jin Yeom ◽  
Naye Eom ◽  
Kyoung-Ku Kang ◽  
...  

2002 ◽  
Vol 728 ◽  
Author(s):  
Clément Sanchez ◽  
Eduardo L. Crepaldi ◽  
Anne Bouchara ◽  
Florence Cagnol ◽  
David Grosso ◽  
...  

AbstractMesostructured transition metal (Ti, Zr, V, Al and Ce-Zr) oxide-based hybrid thin films, templated by poly(ethylene oxide)-based surfactants or block copolymers, have been prepared reproducibly, displaying 2D-hexagonal (p6m) or 2D-centred rectangular (c2m) structure. By carefully adjusting the variables involved it is possible to combine both high organisation and excellent optical quality. TiO2 and ZrO2-based materials show thermal stability up to 400-550°C. The elimination of the template can be conducted efficiently and gives rise to high surface area mesoporous films. For the other metal oxide hybrids the inorganic framework is much more fragile, and requires a precise sequence of post-treatments to be stabilised. In addition, original and homogeneous macrotextures shaped with coral-like, helical or macroporous sieves morphologies have been obtained following a nanotectonic approach based on the template-directed assembly by poly-γ-benzyl-L-glutamate (PBLG) of organically functionalised CeO2 crystalline nanoparticles.


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