Simultaneous regulation of optical properties and cellular behaviors of gold nanoclusters by pre-engineering the biotemplates

2020 ◽  
Vol 56 (77) ◽  
pp. 11414-11417
Author(s):  
Wencheng Zhong ◽  
Mengyao Wen ◽  
Jie Xu ◽  
Haixia Wang ◽  
Li-Li Tan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Gold Nanoclusters ◽  
Cellular Behaviors

Upon pre-engineering the surface charged groups of biotemplates, both optical properties and cellular behaviors of fluorescent gold nanoclusters can be simultaneously modulated.

scholarly journals Ligand shell size effects on one- and two-photon excitation fluorescence of zwitterion functionalized gold nanoclusters

2019 ◽  
Vol 21 (43) ◽  
pp. 23916-23921 ◽  
Author(s):  
Martina Perić ◽  
Željka Sanader Maršić ◽  
Isabelle Russier-Antoine ◽  
Hussein Fakhouri ◽  
Franck Bertorelle ◽  
...  
Keyword(s):  
Optical Properties ◽  
Size Effects ◽  
Gold Nanoclusters ◽  
Shell Size ◽  
Two Photon ◽  
Photon Excitation ◽  
Ligand Shell ◽  
Aqueous Solvent ◽  
The One ◽  
Two Photon Excitation

The effects of explicit ligands and of aqueous solvent on optical properties and in particular on the one- and two-photon excitation fluorescence of zwitterion functionalized gold nanoclusters have been studied.

Interrelation of transport and optical properties in gold nanoclusters

2010 ◽  
Vol 97 (12) ◽  
pp. 123108 ◽  
Author(s):  
G. W. Shu ◽  
T. Y. Chen ◽  
J. L. Shen ◽  
C. A. J. Lin ◽  
W. H. Chang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Gold Nanoclusters

C–H⋯Au interactions and optical properties of [(P,P)4Au6]2+ molecular gold nanoclusters

2020 ◽  
Vol 49 (15) ◽  
pp. 4797-4804 ◽  
Author(s):  
Laura Estévez
Keyword(s):  
Optical Properties ◽  
Bathochromic Shift ◽  
Gold Nanoclusters

A large bathochromic shift is computed when the linker is incorporated to connect P-donor sites.

scholarly journals Influence of the Spatial Conformation of Charged Ligands on the Optical Properties of Gold Nanoclusters

2019 ◽  
Vol 123 (43) ◽  
pp. 26705-26717 ◽  
Author(s):  
Estelle Porret ◽  
Muriel Jourdan ◽  
Beatrice Gennaro ◽  
Clothilde Comby-Zerbino ◽  
Franck Bertorelle ◽  
...  
Keyword(s):  
Optical Properties ◽  
Gold Nanoclusters ◽  
Charged Ligands

Carboranealkynyl‐Protected Gold Nanoclusters: Size Conversion and UV‐Vis‐NIR Optical Properties

2020 ◽  
Author(s):  
Jie Wang ◽  
Zhao-Yang Wang ◽  
Shi-Jun Li ◽  
Shuang-Quan Zang ◽  
Thomas C. W. Mak
Keyword(s):  
Optical Properties ◽  
Gold Nanoclusters

Protein stabilized Au nanoclusters: spectral properties and photostability

2016 ◽  
Vol 56 (1) ◽  
Author(s):  
Vilius Poderys ◽  
Marija Matulionytė-Safinė ◽  
Dainius Rupšys ◽  
Ričardas Rotomskis
Keyword(s):  
Optical Properties ◽  
Spectral Properties ◽  
Colloidal Stability ◽  
Coating Layer ◽  
Gold Nanoclusters ◽  
Therapeutic Agents ◽  
Hypsochromic Shift ◽  
Au Nanoclusters ◽  
Nanoparticle Coating ◽  
Delivered Dose

Bovine serum albumin stabilized gold nanoclusters (BSA-Au nanoclusters) have been widely studied due to their possible applications in biomedicine as sensors, fluorescent or multi-modality markers, and therapeutic agents. Synthesis and optical properties of these nanoclusters have been extensively investigated; however, there is still very little data on photostability of BSA-Au nanoclusters. Photostability of BSA-Au nanoclusters is of major importance for a variety of applications, such as material sensing and fluorescence imaging. Herein we demonstrate that after synthesis the BSA-Au solution has two photoluminescence (PL) bands peaking at 468 and 660 nm. Nevertheless, a different behaviour of the PL bands at 468 and 660 nm upon irradiation indicates that only band at 660 nm is related to PL of Au nanoclusters. BSA-Au nanoclusters exhibit great colloidal stability and do not undergo irreversible changes when heated up to 65 °C. However, irradiation of BSA-Au nanoclusters causes a wavelength dependent decrease of intensity and a hypsochromic shift of the PL band at 660 nm which is proportional to the delivered dose. The shift of the PL band at 660 nm could occur due to loss of several gold atoms in Au nanoclusters and/or due to deterioration of a nanoparticle coating layer. We have also demonstrated that the photostability of BSA-Au nanoclusters increases in the cell growth medium.

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