PMID- 20000801
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20100701
LR  - 20100413
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 26
IP  - 8
DP  - 2010 Apr 20
TI  - Doping-induced conductivity transitions in molecular layers of polyaniline: 
      optical studies of electronic state changes.
PG  - 5829-35
LID - 10.1021/la9037606 [doi]
AB  - The doping-induced conductivity transitions in molecular layers of polyaniline 
      have been studied by monitoring the correlated optical and spectroscopic changes 
      using spectroscopic and single wavelength extinction ellipsometry, also in total 
      internal reflection mode (TIRE), together with reflection spectrometry. The 
      measurements were performed on deposited multilayers as well as on a Langmuir 
      monolayer at the air-water interface, as a function of acidic doping. We found 
      that the characteristic spectroscopic features of conducting and insulating 
      polyaniline persisted down to the single layer, both in the solid state and at 
      the air-water interface. We also investigated in real time the modulation of 
      conductivity induced by the intercalation of Li ions in the polyaniline film, by 
      a combination of time-resolved ellipsometry and reflectivity spectra 
      measurements. In this case, the enhanced sensitivity provided by the TIRE 
      geometry, combined with the relatively fast time scale accessible by the single 
      wavelength ellipsometry, allowed us to follow in detail in real time the 
      doping/dedoping process.
FAU - Cristofolini, L
AU  - Cristofolini L
AD  - Dipartimento di Fisica, INFM-CNR CRS-Soft, Universita di Parma, Parma, Italy.
FAU - Fontana, M P
AU  - Fontana MP
FAU - Camorani, P
AU  - Camorani P
FAU - Berzina, T
AU  - Berzina T
FAU - Nabok, A
AU  - Nabok A
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
EDAT- 2009/12/17 06:00
MHDA- 2009/12/17 06:01
CRDT- 2009/12/17 06:00
PHST- 2009/12/17 06:00 [entrez]
PHST- 2009/12/17 06:00 [pubmed]
PHST- 2009/12/17 06:01 [medline]
AID - 10.1021/la9037606 [doi]
PST - ppublish
SO  - Langmuir. 2010 Apr 20;26(8):5829-35. doi: 10.1021/la9037606.