PMID- 31746614
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200304
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 35
IP  - 50
DP  - 2019 Dec 17
TI  - Comparison of In-Plane Stress Development in Sol-Gel- and Nanoparticle-Derived 
      Mesoporous Metal Oxide Thin Films.
PG  - 16427-16437
LID - 10.1021/acs.langmuir.9b02455 [doi]
AB  - By using an evaporation-induced self-assembly (EISA) process, mesoporous metal 
      oxide thin films are prepared via molecular precursors undergoing a sol-gel 
      transition or by using nanoparticle dispersions as the starting materials. Both 
      methods are employed together with PIB(50)-b-PEO(45) as the structure-directing 
      agent to produce porous TiO(2) and ZrO(2) thin films with spherical mesopores of 
      around 14 nm in diameter. These nanoparticle- and sol-gel-derived films were 
      investigated in terms of the intrinsic in-plane stress development during the 
      heat treatment up to 500  degrees C to evaluate the impact of solvent evaporation, 
      template decomposition and crystallization on the mechanical state of the film. 
      The investigation revealed the lowest intrinsic stress for the 
      nanoparticle-derived mesoporous film, which is assigned to the combination of the 
      relaxing effects of the utilized diblock copolymer and the interparticular gaps 
      between the precrystalline nanoparticles. Furthermore, the residual in-plane 
      stress was studied after annealing steps ranging from 300 to 1000  degrees C and cooling 
      down to room temperature. Here, TiO(2) nanoparticle-derived mesoporous films 
      possess a lower residual stress than the sol-gel-derived mesoporous films, while 
      in the case of ZrO(2) films, sol-gel-derived coatings reveal the smallest 
      residual stress. The latter is based on the lower thermal expansion coefficient 
      of the dominant monoclinic crystal phase compared to that of the silicon 
      substrate. Hence, the present crystal structure has a strong influence on the 
      mechanical state. The observation in this study helps to further understand the 
      stress-related mechanical properties and the formation of mesoporous metal 
      oxides.
FAU - Cop, Pascal
AU  - Cop P
AD  - Physikalisch-Chemisches Institut , Justus Liebig University , Heinrich-Buff-Ring 
      17 , 35392 Giessen , Germany.
AD  - Center of Materials Research , Justus Liebig University , Heinrich-Buff-Ring 16 , 
      35392 Giessen , Germany.
FAU - Hess, Kevin
AU  - Hess K
AD  - Physikalisch-Chemisches Institut , Justus Liebig University , Heinrich-Buff-Ring 
      17 , 35392 Giessen , Germany.
AD  - Center of Materials Research , Justus Liebig University , Heinrich-Buff-Ring 16 , 
      35392 Giessen , Germany.
AD  - Department of Chemistry and Materials Engineering , Kansai University , 3-3-35 
      Yamate-cho , Suita , Osaka 564-8680 , Japan.
FAU - Werner, Sebastian
AU  - Werner S
AD  - Physikalisch-Chemisches Institut , Justus Liebig University , Heinrich-Buff-Ring 
      17 , 35392 Giessen , Germany.
AD  - Center of Materials Research , Justus Liebig University , Heinrich-Buff-Ring 16 , 
      35392 Giessen , Germany.
FAU - Meinusch, Rafael
AU  - Meinusch R
AD  - Physikalisch-Chemisches Institut , Justus Liebig University , Heinrich-Buff-Ring 
      17 , 35392 Giessen , Germany.
AD  - Center of Materials Research , Justus Liebig University , Heinrich-Buff-Ring 16 , 
      35392 Giessen , Germany.
FAU - Smarsly, Bernd M
AU  - Smarsly BM
AUID- ORCID: 0000-0001-8452-2663
AD  - Physikalisch-Chemisches Institut , Justus Liebig University , Heinrich-Buff-Ring 
      17 , 35392 Giessen , Germany.
AD  - Center of Materials Research , Justus Liebig University , Heinrich-Buff-Ring 16 , 
      35392 Giessen , Germany.
FAU - Kozuka, Hiromitsu
AU  - Kozuka H
AUID- ORCID: 0000-0002-3385-215X
AD  - Department of Chemistry and Materials Engineering , Kansai University , 3-3-35 
      Yamate-cho , Suita , Osaka 564-8680 , Japan.
LA  - eng
PT  - Journal Article
DEP - 20191205
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
SB  - IM
EDAT- 2019/11/21 06:00
MHDA- 2019/11/21 06:01
CRDT- 2019/11/21 06:00
PHST- 2019/11/21 06:00 [pubmed]
PHST- 2019/11/21 06:01 [medline]
PHST- 2019/11/21 06:00 [entrez]
AID - 10.1021/acs.langmuir.9b02455 [doi]
PST - ppublish
SO  - Langmuir. 2019 Dec 17;35(50):16427-16437. doi: 10.1021/acs.langmuir.9b02455. Epub 
      2019 Dec 5.