Laurence Romsted

Laurence Romsted received the B.A. degree from DePauw University; Ph.D. degree from Indiana University; and Postdoctoral from University of California at Santa Barbara. Currently, he is a Professor of chemistry in the Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey. His research applies physical organic and bioorganic approaches to problems in association colloid chemistry and emulsions. He and his colleagues study amphiphile aggregate effects on chemical reactivity and use chemical reactions to better understand aggregate structures. UV/Visible, Fluorescence, FTIR, and NMR spectroscopies, and HPLC are used in concert with chemical reactivity studies to obtain information on delicate balance of forces that control the formation and stabilities of aggregates and the association of ions and molecules to their surfaces. His group developed the chemical trapping method based on the heterolytic chemistry of an arenediazonium ion probe to determine, simultaneously, the concentrations of water and a variety of other weakly basic nucleophiles at aggregate interfaces including, alcohols, counterions, peptide bonds, urea, and surfactant head groups. New protocols for the method are being developed to determine polypeptide topologies at aggregate interfaces. His recent work demonstrates that the formation of rod-like aggregates is accompanied by specific ion pairing and dehydration of the interfacial region of the aggregates which permits tighter packing of the amphiphiles and formation of rod-like structures. The results should enhance understanding of the relations between the structure and composition and the ion binding properties of biomembranes. The probe is also being used to estimate antioxidant distributions between the oil, interfacial, and aqueous regions of opaque emulsions.

Biography Updated on 21 February 2008

Personal Home Page

http://chem.rutgers.edu/content_dynamic/faculty/laurence_s_romsted.shtml

Articles in Scholarly Journals [Incomplete List]

  1. Micellar induced regioselectivity in the two-step consecutive reaction of SO2-3 with Br(CH2CH2)nBr (n=2–5n=2–5)
    Journal of Colloid and Interface Science, vol. 312, no. 2, pp. 453–459, 2007
  2. Do Amphiphile Aggregate Morphologies and Interfacial Compositions Depend Primarily on Interfacial Hydration and Ion-Specific Interactions? The Evidence from Chemical Trapping
    Langmuir, vol. 23, no. 2, pp. 414–424, 2007
  3. Journal of the American Chemical Society, vol. 128, no. 2, pp. 492–501, 2006
  4. Determining a-tocopherol distributions between the oil, water, and interfacial regions of macroemulsions: Novel applications of electroanalytical chemistry and the pseudophase kinetic model
    Advances in Colloid and Interface Science, vol. 123-126, pp. 303–311, 2006
  5. The Journal of Physical Chemistry B, vol. 109, no. 49, pp. 23629–23637, 2005
  6. Langmuir, vol. 21, no. 2, pp. 562–568, 2005
  7. Langmuir, vol. 20, no. 8, pp. 3047–3055, 2004
  8. Langmuir, vol. 19, no. 22, pp. 9179–9190, 2003
  9. The Journal of Organic Chemistry, vol. 68, no. 3, pp. 706–717, 2003
  10. Langmuir, vol. 18, no. 2, pp. 319–324, 2002
  11. Journal of Agricultural and Food Chemistry, vol. 50, no. 11, pp. 3328–3336, 2002
  12. Interfacial compositions of cationic and mixed non-ionic micelles by chemical trapping: a new method for characterizing the properties of amphiphilic aggregates
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 176, no. 1, pp. 53–67, 2001
  13. Langmuir, vol. 16, no. 23, pp. 9095–9098, 2000
  14. Langmuir, vol. 16, no. 23, pp. 8771–8779, 2000
  15. Langmuir, vol. 16, no. 1, pp. 59–71, 2000
  16. Langmuir, vol. 15, no. 2, pp. 326–336, 1999
  17. Rates and pH-dependent product distributions of the CuCl2-catalyzed dediazoniation ofp-nitrobenzenediazonium ­tetrafluoroborate in aqueous acid
    Journal of Physical Organic Chemistry, vol. 12, no. 2, pp. 130–140, 1999
  18. Determination of Halide Concentrations at the Interface of Zwitterionic Micelles by Chemical Trapping: Influence of the Orientation of the Dipole and the Nature of the Cation
    Journal of Colloid and Interface Science, vol. 220, no. 1, pp. 96–102, 1999
  19. A new method for monitoring dediazoniation reactions: Simultaneous monitoring of concentration and rates of product formation and loss of starting material for the dediazoniation ofp-methylbenzenediazonium tetrafluoroborate
    International Journal of Chemical Kinetics, vol. 30, no. 1, pp. 31–39, 1998
  20. Journal of the American Chemical Society, vol. 120, no. 39, pp. 10046–10054, 1998
  21. Langmuir, vol. 13, no. 4, pp. 647–652, 1997
  22. Langmuir, vol. 13, no. 19, pp. 5032–5035, 1997
  23. Effects of hydrocarbon and triglyceride oils on butanol distribution in water-in-oil cationic microemulsions
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 123-124, pp. 89–105, 1997
  24. Biochemistry, vol. 36, no. 47, pp. 14512–14530, 1997
  25. Langmuir, vol. 12, no. 10, pp. 2425–2432, 1996
  26. Langmuir, vol. 11, no. 7, pp. 2393–2398, 1995
  27. Journal of Physical Chemistry, vol. 99, no. 27, pp. 10879–10882, 1995
  28. Journal of Physical Chemistry, vol. 99, no. 39, pp. 14572–14572, 1995
  29. Journal of the American Chemical Society, vol. 116, no. 26, pp. 11779–11786, 1994
  30. Journal of the American Chemical Society, vol. 115, no. 3, pp. 989–994, 1993
  31. Journal of the American Chemical Society, vol. 115, no. 18, pp. 8351–8361, 1993
  32. Journal of the American Chemical Society, vol. 115, no. 18, pp. 8362–8367, 1993
  33. Journal of the American Chemical Society, vol. 113, no. 13, pp. 5052–5053, 1991
  34. Journal of Physical Chemistry, vol. 95, no. 18, pp. 6747–6750, 1991
  35. Accounts of Chemical Research, vol. 24, no. 12, pp. 357–364, 1991
  36. A new method for estimating counter-ion selectivity of a cationic association colloid: Trapping of interfacial chloride and bromide counter-ions by reaction with micellar bound aryldiazonium salts
    Colloids and Surfaces, vol. 48, no. 1, pp. 123–137, 1990
  37. Journal of Physical Chemistry, vol. 93, no. 10, pp. 4219–4226, 1989
  38. Journal of Physical Chemistry, vol. 92, no. 16, pp. 4690–4698, 1988
  39. Journal of Physical Chemistry, vol. 89, no. 8, pp. 1341–1344, 1985
  40. Journal of Physical Chemistry, vol. 89, no. 21, pp. 4658–4658, 1985
  41. Journal of Physical Chemistry, vol. 89, no. 23, pp. 5107–5113, 1985
  42. Journal of Physical Chemistry, vol. 89, no. 23, pp. 5113–5118, 1985
  43. A rapid quantitative method for determining the homolog composition of quaternary ammonium surfactants
    Journal of Colloid and Interface Science, vol. 97, no. 1, pp. 115–119, 1984
  44. Journal of Physical Chemistry, vol. 86, no. 11, pp. 2103–2108, 1982
  45. Journal of Physical Chemistry, vol. 86, no. 23, pp. 4652–4652, 1982
  46. Journal of the American Chemical Society, vol. 104, no. 19, pp. 5048–5050, 1982
  47. Journal of Organic Chemistry, vol. 47, no. 18, pp. 3528–3532, 1982
  48. Journal of the American Chemical Society, vol. 103, no. 19, pp. 5784–5788, 1981
  49. Journal of the American Chemical Society, vol. 103, no. 19, pp. 5788–5794, 1981
  50. Journal of Physical Chemistry, vol. 85, no. 14, pp. 2123–2129, 1981
  51. Journal of Physical Chemistry, vol. 85, no. 26, pp. 4118–4125, 1981
  52. Journal of Physical Chemistry, vol. 84, no. 20, pp. 2607–2611, 1980
  53. Journal of Physical Chemistry, vol. 84, no. 20, pp. 2611–2618, 1980
  54. Journal of the American Chemical Society, vol. 102, no. 11, pp. 3900–3903, 1980
  55. Journal of the American Chemical Society, vol. 101, no. 5, pp. 1253–1259, 1979
  56. Journal of the American Chemical Society, vol. 101, no. 24, pp. 7438–7438, 1979
  57. Journal of the American Chemical Society, vol. 100, no. 17, pp. 5420–5425, 1978
  58. Quantitative treatment of micellar catalysis of reactions involving hydrogen ions
    The Journal of Organic Chemistry, vol. 43, no. 22, pp. 4299–4303, 1978
  59. Journal of Organic Chemistry, vol. 41, no. 18, pp. 3037–3040, 1976