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SUMMARY:ESS Science & Instruments\, Contr.talk 4 - Modulating micelle morp
 hology and electrostatic correlations through specific ion interactions in
  deep eutectic solvents
DTSTART;VALUE=DATE-TIME:20210512T124500Z
DTEND;VALUE=DATE-TIME:20210512T130500Z
DTSTAMP;VALUE=DATE-TIME:20260528T095155Z
UID:indico-contribution-1064@lindico453.srv.lu.se
DESCRIPTION:Speakers: Adrian Sanchez-Fernandez (Lund University)\nModulati
 ng micelle morphology and electrostatic correlations through specific ion 
 interactions in deep eutectic solvents\nAdrian Sanchez-Fernandez\, Andrew 
 Jackson and Karen Edler\nFood Technology\, Engineering and Nutrition\, Lun
 d University\, Lund\, Sweden.\nEuropean Spallation Source\, Lund\, Sweden.
 \nDepartment of Chemistry\, University of Bath\, Bath\, United Kingdom.\na
 drian.sanchez-fernandez@food.lth.se\n\nIn recent years\, many studies into
  green solvents have been performed and deep eutectic\nsolvents (DES) have
  emerged as environmentally friendly alternatives in many fields\, such as
 \nseparation processes\, metal processing\, biocatalysis and electrodeposi
 tion.[1] DES are green\nsolvents obtained through the combination of cheap
  and simple organic compounds\, where\nthe interaction between the precurs
 ors promotes a depression in the melting point that\nallows the mixture to
  remain liquid at room temperature. Moreover\, the combination of\ndiffere
 nt precursors provides a certain control over the physicochemical properti
 es of the\nsolvent (e.g. solvent polarity and charge density). Thus\, DES 
 are regarded as task-specific\n“cocktails”\, where the properties of t
 he solvent can be tuned to suit particular applications.\nRecent developme
 nts have shown the ability of DES to support amphiphile self-assembly\,\nb
 ringing the possibility to develop sustainable alternatives for surfactant
  templating\, drug\ndelivery and biosensing\, among others. Here we will e
 xplore the self-assembly of surfactants\nin DES as probed using small-angl
 e neutron scattering. The increase of charge density in the\nsolvent is sh
 own to promote micelle growth through electrostatic screening in compariso
 n to\nmore neutrally charged DES environments.[2\,3] In addition\, the com
 bined effect of\nhydrophobic and electrostatic interactions through the ad
 dition of hydrotropic salts leads to\na profound change in micelle shape\,
  resulting in the formation of worm-like micelles.[4]\nFinally\, our lates
 t results in the study of long-range colloidal interactions in DES will be
 \npresented. Aiming to gain a better understanding of the fundamental aspe
 cts of amphiphile\nself-assembly in these solvents\, we will present detai
 ls of the micellisation with varied\nphysicochemical properties of the sol
 vent\, salt addition and counterion substitution.\n[1] B.B. Hansen et al.\
 , Deep Eutectic Solvents: A Review of Fundamentals and Applications\, Chem
 . Rev.\n121(3) (2021) 1232-1285.\n[2] A. Sanchez-Fernandez et al.\, Surfac
 tant-Solvent Interaction Effects on the Micellization of Cationic\nSurfact
 ants in a Carboxylic Acid-Based Deep Eutectic Solvent\, Langmuir 33(50) (2
 017) 14304-14314.\n[3] A. Sanchez-Fernandez et al.\, Micellization of alky
 ltrimethylammonium bromide surfactants in choline\nchloride:glycerol deep 
 eutectic solvent\, Phys. Chem. Chem. Phys. 18(48) (2016) 33240-33249.\n[4]
  A. Sanchez-Fernandez et al.\, Complex by design: Hydrotrope-induced micel
 lar growth in deep eutectic\nsolvents\, J. Colloid Interface Sci. 581(Pt A
 ) (2021) 292-298.\n\nhttps://lindico453.srv.lu.se/event/214/contributions/
 1064/
LOCATION:
URL:https://lindico453.srv.lu.se/event/214/contributions/1064/
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