PMID- 23764449
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20140123
LR  - 20130614
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 785
DP  - 2013 Jun 27
TI  - A novel quartz crystal microbalance gas sensor based on porous film coatings. A 
      high sensitivity porous poly(methylmethacrylate) water vapor sensor.
PG  - 98-103
LID - S0003-2670(13)00595-3 [pii]
LID - 10.1016/j.aca.2013.04.052 [doi]
AB  - We describe a novel and generally applicable approach for creating voids in films 
      deposited on the surface of solid substrates. Such films are advantageous when a 
      quartz crystal microbalance (QCM) is the basis of a sensor. We show that films 
      with large void volumes produce more sensitive sensors than with the original 
      film. Poly(methylmethacrylate) (PMMA) was used as the polymer layer deposited on 
      a quartz crystal microbalance (QCM) to demonstrate our technique for the model 
      system of water vapor analysis in flowing nitrogen gas. A film of pure PMMA on a 
      QCM is a sensor for water vapor in a gas phase. A more sensitive sensor was 
      created by dip coating QCM crystals into solutions containing mixtures of PMMA 
      and poly(D,L-lactide) (PDLL) and then evaporating the solution films on the QCM 
      crystals to form mixed polymer films of varying PDLL content. The PDLL was then 
      removed from the mixed polymer films by exposure to a NaOH solution to form pure 
      PMMA films having various void volumes. A leached PMMA film that originally 
      contained 50% by weight PDLL had a 3.7 times larger QCM sensitivity for water 
      vapor than a pure PMMA film.
CI  - Copyright (c) 2013 Elsevier B.V. All rights reserved.
FAU - Yoo, Ho Yeon
AU  - Yoo HY
AD  - Department of Chemistry, University at Buffalo, SUNY, Buffalo, NY 14260-3000, 
      USA. hyoo2002@gmail.com
FAU - Bruckenstein, Stanley
AU  - Bruckenstein S
LA  - eng
PT  - Journal Article
DEP - 20130506
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
EDAT- 2013/06/15 06:00
MHDA- 2013/06/15 06:01
CRDT- 2013/06/15 06:00
PHST- 2013/03/06 00:00 [received]
PHST- 2013/04/24 00:00 [revised]
PHST- 2013/04/26 00:00 [accepted]
PHST- 2013/06/15 06:00 [entrez]
PHST- 2013/06/15 06:00 [pubmed]
PHST- 2013/06/15 06:01 [medline]
AID - S0003-2670(13)00595-3 [pii]
AID - 10.1016/j.aca.2013.04.052 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2013 Jun 27;785:98-103. doi: 10.1016/j.aca.2013.04.052. Epub 2013 
      May 6.