Dual physically and chemically cross-linked polyelectrolyte nanohydrogels: Compositional and pH-dependent behavior studies

2020 ◽  
Vol 122 ◽  
pp. 109398 ◽  
Author(s):  
Marjan Ashrafizadeh ◽  
Kam Chiu Tam ◽  
Aliyar Javadi ◽  
Mahdi Abdollahi ◽  
Saeid Sadeghnejad ◽  
...  
Langmuir ◽  
2004 ◽  
Vol 20 (18) ◽  
pp. 7747-7752 ◽  
Author(s):  
Molly M. Stevens ◽  
Stephanie Allen ◽  
Jill K. Sakata ◽  
Martyn C. Davies ◽  
Clive J. Roberts ◽  
...  

2017 ◽  
Vol 121 (37) ◽  
pp. 20229-20241 ◽  
Author(s):  
Akemi M. Darlington ◽  
Tasha A. Jarisz ◽  
Emma L. DeWalt-Kerian ◽  
Sandra Roy ◽  
Sun Kim ◽  
...  

2021 ◽  
Vol 9 ◽  
Author(s):  
Bo Peng ◽  
Liu-Xi Zheng ◽  
Pan-Yue Wang ◽  
Jia-Feng Zhou ◽  
Meng Ding ◽  
...  

On the origin of photoluminescence of noble metal NCs, there are always hot debates: metal-centered quantum-size confinement effect VS ligand-centered surface state mechanism. Herein, we provided solid evidence that structural water molecules (SWs) confined in the nanocavity formed by surface-protective-ligand packing on the metal NCs are the real luminescent emitters of Au-Ag bimetal NCs. The Ag cation mediated Au-Ag bimetal NCs exhibit the unique pH-dependent dual-emission characteristic with larger Stokes shift up to 200 nm, which could be used as potential ratiometric nanosensors for pH detection. Our results provide a completely new insight on the understanding of the origin of photoluminescence of metal NCs, which elucidates the abnormal PL emission phenomena, including solvent effect, pH-dependent behavior, surface ligand effect, multiple emitter centers, and large-Stoke’s shift.


1990 ◽  
Vol 265 (17) ◽  
pp. 9694-9700 ◽  
Author(s):  
C L Treviño ◽  
W A Palmisano ◽  
E R Birnbaum ◽  
M T Henzl

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