PMID- 22930478
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20130403
LR  - 20121105
IS  - 1439-7641 (Electronic)
IS  - 1439-4235 (Linking)
VI  - 13
IP  - 16
DP  - 2012 Nov 12
TI  - Low-temperature solid-state microwave reduction of graphene oxide for transparent 
      electrically conductive coatings on flexible polydimethylsiloxane (PDMS).
PG  - 3700-6
LID - 10.1002/cphc.201200450 [doi]
AB  - Microwaves (MWs) are applied to initialize deoxygenation of graphene oxide (GO) 
      in the solid state and at low temperatures ( approximately 165  degrees C). The Fourier-transform 
      infrared (FTIR) spectra of MW-reduced graphene oxide (rGO) show a significantly 
      reduced concentration of oxygen-containing functional groups, such as carboxyl, 
      hydroxyl and carbonyl. X-ray photoelectron spectra confirm that microwaves can 
      promote deoxygenation of GO at relatively low temperatures. Raman spectra and TGA 
      measurements indicate that the defect level of GO significantly decreases during 
      the isothermal solid-state MW-reduction process at low temperatures, 
      corresponding to an efficient recovery of the fine graphene lattice structure. 
      Based on both deoxygenation and defect-level reduction, the resurgence of 
      interconnected graphene-like domains contributes to a low sheet resistance 
      ( approximately 7.9x10(4) Omega per square) of the MW-reduced GO on SiO(2) -coated Si substrates 
      with an optical transparency of 92.7 % at  approximately 547 nm after MW reduction, indicating 
      the ultrahigh efficiency of MW in GO reduction. Moreover, the low-temperature 
      solid-state MW reduction is also applied in preparing flexible transparent 
      conductive coatings on polydimethylsiloxane (PDMS) substrates. UV/Vis 
      measurements indicate that the transparency of the thus-prepared MW-reduced GO 
      coatings on PDMS substrates ranges from 34 to 96 %. Correspondingly, the sheet 
      resistance of the coating ranges from 10(5) to 10(9) Omega per square, indicating 
      that MW reduction of GO is promising for the convenient low-temperature 
      preparation of transparent conductors on flexible polymeric substrates.
CI  - Copyright (c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Liang, Qizhen
AU  - Liang Q
AD  - School of Materials Science and Engineering, Georgia Institute of Technology, 
      Atlanta, 30332, USA. qizhen.liang@gmail.com
FAU - Hsie, Sinsar Alec
AU  - Hsie SA
FAU - Wong, Ching Ping
AU  - Wong CP
LA  - eng
PT  - Journal Article
DEP - 20120828
PL  - Germany
TA  - Chemphyschem
JT  - Chemphyschem : a European journal of chemical physics and physical chemistry
JID - 100954211
EDAT- 2012/08/30 06:00
MHDA- 2012/08/30 06:01
CRDT- 2012/08/30 06:00
PHST- 2012/06/02 00:00 [received]
PHST- 2012/08/30 06:00 [entrez]
PHST- 2012/08/30 06:00 [pubmed]
PHST- 2012/08/30 06:01 [medline]
AID - 10.1002/cphc.201200450 [doi]
PST - ppublish
SO  - Chemphyschem. 2012 Nov 12;13(16):3700-6. doi: 10.1002/cphc.201200450. Epub 2012 
      Aug 28.