End-to-End Self-Assembly of Gold Nanorods in Water Solution for Absorption Enhancement at a 1-to-2 μm Band for a Broadband Saturable Absorber

2016 ◽  
Vol 34 (22) ◽  
pp. 5250-5257 ◽  
Author(s):  
Junsu Lee ◽  
Joonhoi Koo ◽  
Jinho Lee ◽  
Ju Han Lee
Keyword(s):  
Saturable Absorber ◽  
Gold Nanorods ◽  
Self Assembly ◽  
Water Solution ◽  
Absorption Enhancement ◽  
End To End

End-to-end self-assembly and colorimetric characterization of gold nanorods and nanospheres via oligonucleotide hybridization

2005 ◽  
Vol 16 (9) ◽  
pp. 1776-1780 ◽  
Author(s):  
Bifeng Pan ◽  
Limei Ao ◽  
Feng Gao ◽  
Hongye Tian ◽  
Rong He ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Oligonucleotide Hybridization ◽  
Colorimetric Characterization ◽  
End To End

scholarly journals Reversible end-to-end assembly of selectively functionalized gold nanorods by light-responsive arylazopyrazole–cyclodextrin interaction

2019 ◽  
Vol 15 ◽  
pp. 1407-1415 ◽  
Author(s):  
Maximilian Niehues ◽  
Patricia Tegeder ◽  
Bart Jan Ravoo
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Ligand Exchange ◽  
Cetyltrimethylammonium Bromide ◽  
Complete Removal ◽  
Tetraethylene Glycol ◽  
Functionalized Nanoparticles ◽  
Organic Hybrid ◽  
Cross Linker ◽  
End To End

We propose a two-step ligand exchange for the selective end-functionalization of gold nanorods (AuNR) by thiolated cyclodextrin (CD) host molecules. As a result of the complete removal of the precursor capping agent cetyltrimethylammonium bromide (CTAB) by a tetraethylene glycol derivative, competitive binding to the host cavity was prevented, and reversible, light-responsive assembly and disassembly of the AuNR could be induced by host–guest interaction of CD on the nanorods and a photoswitchable arylazopyrazole cross-linker in aqueous solution. The end-to-end assembly of AuNR could be effectively controlled by irradiation with UV and visible light, respectively, over four cycles. By the introduction of AAP, previous disassembly limitations based on the photostationary states of azobenzenes could be solved. The combination photoresponsive interaction and selectively end-functionalized nanoparticles shows significant potential in the reversible self-assembly of inorganic–organic hybrid nanomaterials.

Plasmon-Enhanced Chemical Reaction at the Hot Spots of End-to-End Assembled Gold Nanorods

2020 ◽  
Vol 124 (5) ◽  
Author(s):  
Srimanta Pal ◽  
Anushree Dutta ◽  
Manideepa Paul ◽  
Arun Chattopadhyay
Keyword(s):  
Chemical Reaction ◽  
Gold Nanorods ◽  
Hot Spots ◽  
End To End

Plasmonics tunable Ag-coated gold nanorods arrays as reusable SERS substrates for multiplexed antibiotics detection

2021 ◽  
Author(s):  
Xiaoya Peng ◽  
Dan Li ◽  
Yuanting Li ◽  
Haibo Xing ◽  
Wei Deng
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Aqueous Media ◽  
Antibiotic Residues ◽  
Sers Substrates ◽  
Antibiotics Detection ◽  
Robust Strategies

Antibiotic contaminants in aqueous media pose serious threat to human and ecological environments. Therefore, it is necessary to develop robust strategies to detect antibiotic residues. For this purpose, a self-assembly...

Formation of toroids by self-assembly of an α–α corner mimetic: supramolecular cyclization

2017 ◽  
Vol 5 (36) ◽  
pp. 7583-7590 ◽  
Author(s):  
Debasish Podder ◽  
Santu Bera ◽  
Mintu Debnath ◽  
Tanmay Das ◽  
Debasish Haldar
Keyword(s):  
Self Assembly ◽  
Supramolecular Structure ◽  
Cyclization Reaction ◽  
End To End

An α–α corner mimetic self-assembles into a rod shape supramolecular structure which bends and closes end-to-end like a cyclization reaction to form toroids.

Controlling directed self-assembly of gold nanorods in patterned PS-b-PMMA thin films

2015 ◽  
Vol 26 (5) ◽  
pp. 055301 ◽  
Author(s):  
Fengyuan Lai ◽  
Theodorian Borca-Tasciuc ◽  
Joel Plawsky
Keyword(s):  
Thin Films ◽  
Gold Nanorods ◽  
Self Assembly

Lay Gold Nanorods Monolayer down on Solid Surfaces for Surface Enhanced Raman Spectroscopy Applications

2021 ◽  
Author(s):  
haidong Zhao ◽  
Katsuhiro Isozaki ◽  
Tomoya Taguchi ◽  
Shengchun Yang ◽  
Kazushi Miki
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanorods ◽  
Hybrid Method ◽  
Self Assembly ◽  
Surface Enhanced Raman Spectroscopy ◽  
Solid Substrate ◽  
Solvent Evaporation ◽  
Solid Surfaces ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Laying-down gold nanorods (GNRs) of a monolayer immobilized on a solid substrate was realized with the hybrid method, a combination of three elemental technologies: self-assembly, electrophoresis, and solvent evaporation. The...

ENERGETICALLY AND STERICALLY FAVORABLE ASSEMBLY OF IDENTICAL GOLD NANORODS WITH VARYING CONCENTRATIONS OF NANOSPHERES

2021 ◽  
pp. 2150028
Author(s):  
IMTIAZ AHMAD ◽  
AKHLAQ HUSSAIN ◽  
AMBREEN ALI ◽  
RAHIM JAN
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Gold Nanorod ◽  
Potential Well ◽  
Separation Effect ◽  
Face To Face ◽  
Inner Region

Gold nanorod ribbon-like arrays as well as shape-separation effect of rods from sphere-like nanoparticles have been evaluated for identical nanorod suspension with various concentration of nanospheres. These sphere-rod mixtures are prepared with help of different amounts of AgNO3. Deposits of nanoparticles at various positions of the coffee-stain ring are observed in different arrangements. For instance, face-to-face aligned nanorods get settled in ribbon-like superstructures and these arrays are observed to be self-separated from spheres. Self-assembly and shape-separation effect are observed more systematic at the outer-edges than the inner-region of the coffee-stain ring. Experimentally, it has been observed that face-to-face formation of nanorods in suspension is energetically more probable arrangement. As the separation between two nanorods increases, the depth of potential well decreases, indicating that the upper layers of nanorods are more under the influence of lower placed nanorods than those placed in the same plane. Energetically and sterically, more feasible arrangements are observed.

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