PMID- 15848423
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20061101
LR  - 20091111
IS  - 0021-9797 (Print)
IS  - 0021-9797 (Linking)
VI  - 286
IP  - 1
DP  - 2005 Jun 1
TI  - Distribution of amines in water/AOT/n-hexane reverse micelles: influence of the 
      amine chemical structure.
PG  - 245-52
AB  - The distribution of different aliphatic and aromatic amines: n-butylamine (n-BA), 
      isobutylamine (i-BA), tert-butylamine (t-BA), piperidine (PIP), 
      N,N-dimethylaniline (DMA) and N-methylaniline (MA) in water/sodium 
      1,4-bis(2-ethylhexyl)sulfosuccinate(AOT)/n-hexane reverse micelles was 
      investigated by steady-state fluorescence measurements. The partition constants 
      were measured by an indirect method based on the effect that amine partitioning 
      exert on the bimolecular rate of the reaction between a microphase incorporated 
      fluorophore (Ru(bpy)2+(3)) and the quencher, (Fe(CN)3-(6)). For MA, that can act 
      as a quencher of the fluorophore a direct method was used. The results show that 
      primary amines have larger partition constants than the secondary ones. For 
      tertiary amines the distribution constants were practically negligible. Laser 
      flash photolysis experiments confirmed that tertiary amines, both aliphatic and 
      aromatic, are not incorporated to the micellar pseudophase. The effect of the 
      amine structure on the partition constant was analyzed through linear solvation 
      free energy relationships (LSER) using solute parameters and compared with those 
      obtained for alcohols. Hydrogen bond interactions with the AOT polar heads appear 
      to be the main driving force for the distribution of amines between the organic 
      and micellar pseudophases, whereas the size of the alkyl or aromatic group tends 
      to hinder it.
FAU - Zingaretti, Lilian
AU  - Zingaretti L
AD  - Departamento de Quimica, Universidad Nacional de Rio Cuarto, Agencia Postal No. 
      3, 5800 Rio Cuarto, Argentina.
FAU - Mariano Correa, N
AU  - Mariano Correa N
FAU - Boscatto, Liliana
AU  - Boscatto L
FAU - Chiacchiera, Stella M
AU  - Chiacchiera SM
FAU - Durantini, Edgardo N
AU  - Durantini EN
FAU - Bertolotti, Sonia G
AU  - Bertolotti SG
FAU - Rivarola, Claudia R
AU  - Rivarola CR
FAU - Silber, Juana J
AU  - Silber JJ
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
EDAT- 2005/04/26 09:00
MHDA- 2005/04/26 09:01
CRDT- 2005/04/26 09:00
PHST- 2003/12/23 00:00 [received]
PHST- 2004/12/20 00:00 [accepted]
PHST- 2005/04/26 09:00 [pubmed]
PHST- 2005/04/26 09:01 [medline]
PHST- 2005/04/26 09:00 [entrez]
AID - S0021-9797(05)00062-7 [pii]
AID - 10.1016/j.jcis.2004.12.057 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2005 Jun 1;286(1):245-52. doi: 
      10.1016/j.jcis.2004.12.057.