PMID- 23437860
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20130904
LR  - 20130319
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 29
IP  - 11
DP  - 2013 Mar 19
TI  - Hierarchical hybrids of carbon nanotubes in amphiphilic poly(ethylene 
      oxide)-block-polyaniline through a facile method: from smooth to thorny.
PG  - 3757-64
LID - 10.1021/la304283n [doi]
AB  - A facile approach was developed to synthesize conjugated block copolymer (BCP) 
      poly(ethylene oxide)-b-polyaniline (PEO-PANI). Aldehyde group-terminated PEO was 
      prepared by an esterification reaction of p-formylbenzoic acid and PEO and then 
      reacted with PANI from chemical oxidative polymerization. FT-IR, (1)H NMR, and 
      GPC results indicated that BCPs with different PEO block lengths were 
      successfully synthesized. Moreover, the BCPs were employed to noncovalently 
      modify multiwalled carbon nanotubes (MWNTs) through either the direct or indirect 
      method. In the former method, transmission electron microscopy images showed that 
      a core-shell MWNT@BCP hybrid with a shell thickness of gyration diameter of PEO 
      block (2Rg,PEO) was obtained in 1-methyl-2-pyrrolidone (NMP). These hybrids can 
      be well dispersed in many common solvents and poly(vinyl alcohol) matrix. With 
      the increase of PEO block length, the stability of the MWNT dispersion would be 
      highly improved. Interestingly, in the indirect method where deionized water was 
      added to the NMP solution of BCP/MWNT mixture, the surface of the hybrid micelles 
      encapsulated with MWNTs changed from smooth into hierarchically thorny with the 
      increase of BCP/MWNT weight ratio. In this case, the water contact angle had a 
      minimum value of ~70 degrees  at the ratio of 1/8, indicating that the hierarchical 
      thorns followed a Cassie-Baxter regime rather than a Wenzel one. A possible 
      formation mechanism of the unique structure was also proposed.
FAU - Yang, Zhifang
AU  - Yang Z
AD  - Key Laboratory for Large-Format Battery Materials and System, Ministry of 
      Education, School of Chemistry and Chemical Engineering, Huazhong University of 
      Science and Technology, Wuhan 430074, China.
FAU - Xue, Zhigang
AU  - Xue Z
FAU - Liao, Yonggui
AU  - Liao Y
FAU - Zhou, Xingping
AU  - Zhou X
FAU - Zhou, Jinqiang
AU  - Zhou J
FAU - Zhu, Jintao
AU  - Zhu J
FAU - Xie, Xiaolin
AU  - Xie X
LA  - eng
PT  - Journal Article
DEP - 20130304
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
EDAT- 2013/02/27 06:00
MHDA- 2013/02/27 06:01
CRDT- 2013/02/27 06:00
PHST- 2013/02/27 06:00 [entrez]
PHST- 2013/02/27 06:00 [pubmed]
PHST- 2013/02/27 06:01 [medline]
AID - 10.1021/la304283n [doi]
PST - ppublish
SO  - Langmuir. 2013 Mar 19;29(11):3757-64. doi: 10.1021/la304283n. Epub 2013 Mar 4.