Amplified Fluorescence Turn-On Assay for Mercury(II) Detection and Quantification based on Conjugated Polymer and Silica Nanoparticles

2009 ◽  
Vol 30 (7) ◽  
pp. 498-503 ◽  
Author(s):  
Yusong Wang ◽  
Bin Liu
Keyword(s):  
Silica Nanoparticles ◽  
Conjugated Polymer ◽  
Turn On ◽  
Fluorescence Turn On ◽  
Detection And Quantification

scholarly journals Fabrication of Double Emission Enhancement Fluorescent Nanoparticles with Combined PET and AIEE Effects

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5732
Author(s):  
Hsing-Ju Wu ◽  
Cheng-Chung Chang
Keyword(s):  
Silica Nanoparticles ◽  
Drug Carriers ◽  
Core Shell ◽  
Fluorescent Nanoparticles ◽  
Intracellular Imaging ◽  
Turn On ◽  
Emission Enhancement ◽  
The Stöber Method ◽  
Fluorescence Turn On ◽  
And Function

The major challenge in the fabrication of fluorescent silica nanoparticles (FSNs) based on dye-doped silica nanoparticles (DDSNs) is aggregation-caused fluorescence quenching. Here, we constructed an FSN based on a double emission enhancement (DEE) platform. A thio-reactive fluorescence turn-on molecule, N-butyl-4-(4-maleimidostyryl)-1,8-naphthalimide (CS), was bound to a silane coupling agent, (3-mercaptopropyl)-trimethoxysilane (MPTMS), and the product N-butyl-4-(3-(trimethoxysilyl-propylthio)styryl)-1,8-naphthalimide (CSP) was further used to fabricate a core–shell nanoparticle through the Stöber method. We concluded that the turn-on emission by CSP originated from the photoinduced electron transfer (PET) between the maleimide moiety and the CSP core scaffold, and the second emission enhancement was attributed to the aggregation-induced emission enhancement (AIEE) in CSP when encapsulated inside a core–shell nanoparticle. Thus, FSNs could be obtained through DEE based on a combination of PET and AIEE effects. Systematic investigations verified that the resulting FSNs showed the traditional solvent-independent and photostable optical properties. The results implied that the novel FSNs are suitable as biomarkers in living cells and function as fluorescent visualizing agents for intracellular imaging and drug carriers.

scholarly journals Detection of Ethylene Gas by Fluorescence Turn-On of a Conjugated Polymer

2010 ◽  
Vol 122 (47) ◽  
pp. 9056-9059 ◽  
Author(s):  
Birgit Esser ◽  
Timothy M. Swager
Keyword(s):  
Conjugated Polymer ◽  
Turn On ◽  
Fluorescence Turn On

Thymine-covalently decorated, AIEE-type conjugated polymer as fluorescence turn-on probe for aqueous Hg2+

2014 ◽  
Vol 198 ◽  
pp. 395-401 ◽  
Author(s):  
Xinhua Sun ◽  
Wei Shi ◽  
Fudong Ma ◽  
Yonghai Hui ◽  
Linxian Xu ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Turn On ◽  
Fluorescence Turn On

scholarly journals Conjugated Polymer-Based Fluorescence Turn-On Sensor for Nitric Oxide

2005 ◽  
Vol 7 (16) ◽  
pp. 3573-3575 ◽  
Author(s):  
Rhett C. Smith ◽  
Andrew G. Tennyson ◽  
Mi Hee Lim ◽  
Stephen J. Lippard
Keyword(s):  
Nitric Oxide ◽  
Conjugated Polymer ◽  
Turn On ◽  
Fluorescence Turn On
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