PMID- 24609508
OWN - NLM
STAT- MEDLINE
DCOM- 20141209
LR  - 20140328
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 6
IP  - 8
DP  - 2014 Apr 21
TI  - Urchin-like polypyrrole nanoparticles for highly sensitive and selective 
      chemiresistive sensor application.
PG  - 4188-94
LID - 10.1039/c3nr05864f [doi]
AB  - Urchin-like polypyrrole (U_PPy) nanoparticles with various diameters were 
      fabricated using a dual-nozzle electrospray and vapor deposition polymerization 
      (VDP). Metal oxide nanoneedle-decorated PPy (FePPy) particles were fabricated as 
      starting materials for deposition of a PPy layer on the metal oxide surface. The 
      FePPy particles were prepared by heating and stirring an aqueous solution of the 
      metal precursor and electrosprayed PPy (E_PPy) particles with nucleated sites on 
      the surface. U_PPys with a maximized surface area were then formed by soaking in 
      an initiator solution followed by VPD. The U_PPy particles were evaluated in 
      various hazardous chemical gas sensors at room temperature. Because of their 
      larger surface area, U_PPy based chemiresistive sensors exhibited greater 
      sensitivity and ca. 10-100 times higher minimum detectable levels (MDLs) of 
      common analytes than pristine PPy particle-based sensors. For example, the MDL of 
      NH(3) was approximately 0.01 ppm, which is better than that observed for other 
      conducting polymer nanostructures. Our new fabrication methodology promises to be 
      an effective approach for fabrication of hybrid nanostructures for future sensing 
      technologies.
FAU - Lee, Jun Seop
AU  - Lee JS
AD  - World Class University (WCU) Program of Chemical Convergence for Energy & 
      Environment (C2E2), School of Chemical and Biological Engineering, College of 
      Engineering, Seoul National University, 599 Gwanangno, Gwanakgu, Seoul, 151-742, 
      Korea. jsjang@plaza.snu.ac.kr.
FAU - Jun, Jaemoon
AU  - Jun J
FAU - Shin, Dong Hoon
AU  - Shin DH
FAU - Jang, Jyongsik
AU  - Jang J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140307
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
RN  - 0 (Metals)
RN  - 0 (Oxides)
RN  - 0 (Polymers)
RN  - 0 (Pyrroles)
RN  - 30604-81-0 (polypyrrole)
RN  - 7664-41-7 (Ammonia)
SB  - IM
MH  - Ammonia/*analysis
MH  - Metals/chemistry
MH  - Nanoparticles/*chemistry
MH  - Oxides/chemistry
MH  - Polymers/*chemistry
MH  - Pyrroles/*chemistry
MH  - Sensitivity and Specificity
EDAT- 2014/03/13 06:00
MHDA- 2014/12/15 06:00
CRDT- 2014/03/11 06:00
PHST- 2014/03/11 06:00 [entrez]
PHST- 2014/03/13 06:00 [pubmed]
PHST- 2014/12/15 06:00 [medline]
AID - 10.1039/c3nr05864f [doi]
PST - ppublish
SO  - Nanoscale. 2014 Apr 21;6(8):4188-94. doi: 10.1039/c3nr05864f. Epub 2014 Mar 7.