APTES Modified GO-PEI-Er3+/Yb3+: NaYF4 Upconverting Nanoparticles Hybrid Film-Based Optical pH Sensor and NIR Photoelectric Response

2019 ◽  
Vol 19 (10) ◽  
pp. 3609-3615 ◽  
Author(s):  
Joydip Dutta ◽  
Vineet Kumar Rai
2017 ◽  
Vol 2 (26) ◽  
pp. 7956-7960 ◽  
Author(s):  
Yanan Liu ◽  
Zuwei Song ◽  
Libin Gao ◽  
Jianzhong Li
Keyword(s):  

Biosensors ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 60 ◽  
Author(s):  
Uswatun Hasanah ◽  
Mita Setyowati ◽  
Rustam Efendi ◽  
Muslem Muslem ◽  
Nor Diyana Md Sani ◽  
...  

In a simple and instant procedure for detecting fish freshness, a hydrogel and hydrophilic pectin matrix membrane was used successfully as an optical pH sensor by immobilizing the chromoionophore ETH 5294 (CI), which is very selective and sensitive for the membrane. The Pe/CI optical pH sensor exhibited excellent linearity between pH 5 and pH 9, with a sensor response time of 5 min and reproducibility of 1.49% relative standard deviation (RSD). The sensor showed response stability for 15 days and a response reduction of 8.6%. The sensor’s capability was demonstrated by the detection of fish freshness for 17 days at 4 °C.


2013 ◽  
Vol 17 (4) ◽  
pp. 238-243 ◽  
Author(s):  
M. V. Kulkarni ◽  
N. A. Charhate ◽  
K. V. Bhavsar ◽  
M. A. Tathe ◽  
B. B. Kale

The Analyst ◽  
1998 ◽  
Vol 123 (9) ◽  
pp. 1843-1847 ◽  
Author(s):  
Chun-Man Chan ◽  
Kwok-Yin Wong

1994 ◽  
Author(s):  
Sifu Zhang ◽  
Peter J. Rolfe ◽  
Yappa A. Wickramasinghe

2011 ◽  
Vol 97 (2) ◽  
pp. 225-233 ◽  
Author(s):  
S. Capel-Cuevas ◽  
M.P. Cuéllar ◽  
I. de Orbe-Payá ◽  
M.C. Pegalajar ◽  
L.F. Capitán-Vallvey

The Analyst ◽  
2003 ◽  
Vol 128 (9) ◽  
pp. 1181 ◽  
Author(s):  
Haley R. Kermis ◽  
Yordan Kostov ◽  
Govind Rao

1995 ◽  
Vol 34 (Part 2, No. 12A) ◽  
pp. L1594-L1596 ◽  
Author(s):  
Yoshihiro Takahashi ◽  
Ryuichi Shimada ◽  
Akinori Maeda ◽  
KenzoKojima ◽  
Hiroshi Ota

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