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Scattering analysis of single polyaniline nanoparticles for acidic environmental sensing

Authors
 Yoochan Hong  ;  Seungyeon Hwang  ;  Dae Sung Yoon  ;  Jaemoon Yang 
Citation
 SENSORS AND ACTUATORS B-CHEMICAL, Vol.218 : 31-36, 2015 
Journal Title
 SENSORS AND ACTUATORS B-CHEMICAL 
ISSN
 0925-4005 
Issue Date
2015
Keywords
Nanoscattering ; Single nanoparticle scattering spectrum ; Polyaniline nanoparticle ; Acidic environment
Abstract
Herein, we demonstrate an acidic environmental sensing technique based on polyaniline (PAni) nanoparticles and a nanoscattering spectrum imaging analysis (NSSIA) system. PAni nanoparticles (PNs) were formulated by a homogeneous coating process using Tween® 80 as a surfactant. Subsequently, PNs were immobilized to an aminated glass substrate to sense environmental pH conditions for single PNs, using the NSSIA system. In contrast to dark-field scattering imaging of the PN, the NSSIA system enabled us to obtain scattering spectra for a single PN to specifically identify the environmental pH conditions. Furthermore, the immobilized PN on the substrate exhibited excellent reversibility for the acquisition of the scattering spectra after repeated change of environmental pH.
Full Text
http://www.sciencedirect.com/science/article/pii/S092540051500550X
DOI
10.1016/j.snb.2015.04.098
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Yang, Jae Moon(양재문) ORCID logo https://orcid.org/0000-0001-7365-0395
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/140719
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