The pH-sensitive switchable behavior based on the layer-by-layer films of hemoglobin and Ag nanoparticles

2011 ◽  
Vol 13 (12) ◽  
pp. 1502-1505 ◽  
Author(s):  
Chunmei Yu ◽  
Wanyu Ji ◽  
Lili Gou ◽  
Ning Bao ◽  
Haiying Gu
Keyword(s):  
Ag Nanoparticles ◽  
Ph Sensitive ◽  
Layer By Layer ◽  
Behavior Based

scholarly journals Capacitive Field-effect (bio-)chemical Sensors Based on Nanocrystalline Diamond Films

2009 ◽  
Vol 1203 ◽  
Author(s):  
Matthias Bäcker ◽  
Arshak Poghossian ◽  
Maryam H. Abouzar ◽  
Sylvia Wenmackers ◽  
Stoffel D. Janssens ◽  
...  
Keyword(s):  
Thin Films ◽  
Field Effect ◽  
High Sensitivity ◽  
Ph Sensitive ◽  
Nanocrystalline Diamond ◽  
Penicillin G ◽  
Layer By Layer ◽  
Label Free ◽  
High Coverage ◽  
Layer Adsorption

AbstractCapacitive field-effect electrolyte-diamond-insulator-semiconductor (EDIS) structures with O-terminated nanocrystalline diamond (NCD) as sensitive gate material have been realized and investigated for the detection of pH, penicillin concentration, and layer-by-layer adsorption of polyelectrolytes. The surface oxidizing procedure of NCD thin films as well as the seeding and NCD growth process on a Si-SiO2 substrate have been improved to provide high pH-sensitive, non-porous thin films without damage of the underlying SiO2 layer and with a high coverage of O-terminated sites. The NCD surface topography, roughness, and coverage of the surface groups have been characterized by SEM, AFM and XPS methods. The EDIS sensors with O-terminated NCD film treated in oxidizing boiling mixture for 45 min show a pH sensitivity of about 50 mV/pH. The pH-sensitive properties of the NCD have been used to develop an EDIS-based penicillin biosensor with high sensitivity (65-70 mV/decade in the concentration range of 0.25-2.5 mM penicillin G) and low detection limit (5 μM). The results of label-free electrical detection of layer-by-layer adsorption of charged polyelectrolytes are presented, too.

Ultrathin Layer-by-Layer Hydrogels with Incorporated Gold Nanorods as pH-Sensitive Optical Materials

2008 ◽  
Vol 20 (24) ◽  
pp. 7474-7485 ◽  
Author(s):  
Veronika Kozlovskaya ◽  
Eugenia Kharlampieva ◽  
Bishnu P. Khanal ◽  
Pramit Manna ◽  
Eugene R. Zubarev ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Optical Materials ◽  
Ph Sensitive ◽  
Layer By Layer ◽  
Ultrathin Layer

scholarly journals Hybrid poly(allylamine hydrochloride)–graphene oxide microcapsules: preparation, characterization and application in textiles with controlled release behavior

2020 ◽  
Vol 1 (4) ◽  
pp. 804-813
Author(s):  
Zhiqi Zhao ◽  
Qiujin Li ◽  
Jixian Gong ◽  
Zheng Li ◽  
Jianfei Zhang
Keyword(s):  
Graphene Oxide ◽  
Controlled Release ◽  
Cotton Fabric ◽  
Near Infrared ◽  
Layer By Layer ◽  
Release Behavior ◽  
Layer Technique ◽  
Allylamine Hydrochloride ◽  
Behavior Based ◽  
Layer By Layer Technique

This work represents hybrid poly(allylamine hydrochloride)-graphene oxide microcapsules formed via layer-by-layer technique, which can be coated on cotton fabric for textiles with controlled release behavior, based on pH and near-infrared responsiveness.

scholarly journals Layer-by-layer pH-sensitive nanoparticles for drug delivery and controlled release with improved therapeutic efficacy in vivo

Drug Delivery ◽  
2020 ◽  
Vol 27 (1) ◽  
pp. 180-190 ◽  
Author(s):  
Wanfu Men ◽  
Peiyao Zhu ◽  
Siyuan Dong ◽  
Wenke Liu ◽  
Kun Zhou ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Therapeutic Efficacy ◽  
Ph Sensitive ◽  
Layer By Layer

Highly compressible and stretchable superhydrophobic coating inspired by bio-adhesion of marine mussels

2014 ◽  
Vol 2 (29) ◽  
pp. 11365-11371 ◽  
Author(s):  
Fatang Liu ◽  
Fenghe Sun ◽  
Qinmin Pan
Keyword(s):  
Ag Nanoparticles ◽  
Layer By Layer ◽  
Superhydrophobic Coating ◽  
Layer Deposition ◽  
Marine Mussels

A highly compressible and stretchable superhydrophobic coating was fabricated using layer-by-layer deposition of Ag nanoparticles and polydopamine.

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