Document Detail


Light-triggered reversible phase transfer of composite colloids.
MedLine Citation:
PMID:  20420440     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Composite colloids were prepared via grafting optically responsive spiropyran polymer brushes onto silica colloids. Similar to spiropyran, the polymer brushes undergo a reversible inversion from a hydrophobic state to a hydrophilic state upon irradiation with UV light (or vice versa by visible light). The composite colloids can thus reversibly transfer between oil and water phases, and this can be remotely triggered using light. At intermediate stages of irradiation, both hydrophobic and hydrophilic components coexist, resulting in the amphiphilic performance of the composite colloids. Such amphiphilic composite colloids can be used as particulate emulsifiers.
Authors:
Ying Wu; Chengliang Zhang; Xiaozhong Qu; Zhengping Liu; Zhenzhong Yang
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  26     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-10     Completed Date:  2010-08-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  9442-8     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China.
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MeSH Terms
Descriptor/Qualifier:
Benzopyrans
Colloids / chemistry*
Emulsifying Agents / chemistry*
Hydrophobicity
Indoles
Light*
Nitro Compounds
Oils
Water
Chemical
Reg. No./Substance:
0/Benzopyrans; 0/Colloids; 0/Emulsifying Agents; 0/Indoles; 0/Nitro Compounds; 0/Oils; 0/spiropyran; 7732-18-5/Water

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