Publications

PAPERS PRESENTED TO CONFERENCES AND ABSTRACTS PUBLISHED IN PROCEEDINGS

1.         J. S. Hwang, D. Kivelson, and W. Z. Plachy, "ESR Line Widths in Solution", Fifth ACS  Northeast Regional Meeting, Roches­ter, New York, October 14‑17, 1973.

2.         M. Geoffroy, L.D. Kispert, and J. S. Hwang, "An ESR, ENDOR and ELDOR Study of Tunneling Rotation of a Hindered Methyl Group", 10th Annual Conference of Southeastern Theoretical Chemists Association, Florida State Universi­ty, Talahassee, Florida, May 25‑26, 1979.

3.         J. S. Hwang, A. C. Dickinson, and L. D. Kispert, "Double Resonance Studies of X‑Irradiated Polycrystal­line Dipeptides and Myofibrillar Proteins", Interna­tional Symposium on Magnetic Resonance in Chemistry, Biology and Physics, Argonne National Laboratory, Argonne, Illinois, June 24‑28, 1979.

4.         J. S. Hwang, A. C. Dickinson, and L. D. Kispert, "ENDOR and ELDOR Studies of X‑Irradiated Polycrystal­line Dipeptides, Myosin and Actomyosin", Chemistry of Petro­leum Products, King Abdulaziz University, Jeddah, Saudi Arabia, March 24‑28, 1980.

5.         J. S. Hwang, B. Andersson, L. D. Kispert, and M. Geoffroy, "An EPR, ENDOR and ELDOR Study of X‑Ray Irradiated Phenacyl Chloride Single Crystals", 1st Asian and Pacific Chemistry Congress, Singapore, April 26‑May 1, 1981.

6.         H. J. Sipe, Jr., L. D. Kispert, and J. S. Hwang, "Elec­tron Magnetic Resonance Studies of Thermally Produced Radicals in Phenylacetylene", 181st ACS National Meeting, Atlanta, GA, March 29‑April 3, 1981.

7.         H. J. Sipe, Jr., L. D. Kispert, J. S. Hwang, and C. P. Tsonis, "Electron Spin Resonance Studies of Thermally Produced Radicals in Phenylacetylene", International Sympo­sium on Spin Trapping and Nitroxyl Radical Chemis­try, Univ. of Guelph, Guelph, Ontario, Canada, July 22‑28, 1981.

8.         J. S. Hwang, H. C. Wang, L. D. Kispert, J. J. Sipe, Jr., and M. Geoffroy, "The Effect of Deuteration upon the Tunneling Rotation of a Hindered Methyl Group in X‑Irradiated 2,2,‑Dimethyl‑d₆‑5‑me­thyl‑1,3‑dioxane-4,6-­dione Crystal:  An ENDOR Study", Thirteenth Southeast­ern Magnetic Resonance Conference, Duke University, Durham, North Carolina, Oct. 7‑9, 1981.

9.         M. Geoffroy, J. S. Hwang, and A. Llinares, "An ESR Study of an X‑Ray Irradiated Ph₃AsF₂ Single Crystal", American Chemical Society 12th Northeast Regional Meeting, University of Vermont, Burlington, Virginia, June 27‑30, 1982.

10.       J. S. Hwang and C. P. Tsonis, "EPR Applications to Polymers.  2.  Spin Probing of Poly(phenylacetylene)", Fourteenth Southeastern Magnetic Resonance Conference, Emory Univ., Atlanta, Georgia, Oct. 6‑8, 1982. 

11.       J. S. Hwang, L. D. Kispert, and R. B. Clarkson, "ENDOR Study of the Matrix Protons in X‑Ray Irradiated Glycyl­glycine Single Crystals", Fourteenth Southeast­ern Magnetic Resonance Conference, Emory Univ., Atlanta, Georgia, Oct. 6‑8, 1982.

12.       G. Allison, L. D. Kispert, and J. S. Hwang, "Prepara­tion and EPR Study of Nitroxide Spin Labels in Liquid Crys­tals", American Chemical Society 34th Southeastern Regional Meeting, Birmingham, Alabama, Nov. 3‑5, 1982.

13.       J. S. Hwang, M. M. Saleem, and C. P. Tsonis, "EPR Applica­tion to Polymers.  3.  EPR Studies of Poly-(phenylacetylene) Using Different Nitroxide Spin Probes", 189th ACS National Meeting, Miami Beach, Florida, Apr. 28‑May 3, 1985.

14.       J. S. Hwang, P. Pollet, and M. M. Saleem, "ESR Line­shape Studies of N‑(4‑n Butyl Benzilidine) 4‑Amino 2,2,6,6­‑Tetra­methylpiperidine 1‑Oxide (BBTMPO) in Toluene", 191st ACS National Meeting, New York, New York, Apr. 13‑18, 1986.

15.       M. S. Hussain and J. S. Hwang, "EPR and Spectroscopic Studies of Configurational Changes in Copper(II) Complex­es of 1,4‑Diazacycloheptane", 28th Rocky Mountain Conference, Denver, Colorado, Aug. 3‑7, 1986.

16.       J. S. Hwang and C. P. Tsonis, "Spin Trapping in Dehydro­halo­genation of Alkyl Halides Catalyzed by Molybdenum Hexacarbo­nyl", Asian Chemical Congress '87 Seoul (ASCHEM SEOUL), June 29‑July 3, 1987.

17.       G. A. Oweimreen and J. S. Hwang, "A Study of the Nematic‑Isotropic Two‑Phase Region in Mixtures of Quasispherical Solutes in Alkylcyanobiphenyls by ESR using Tempone as Probe", The 12th International Liquid Crystal Conference, Freiburg, Germany.  Aug. 15‑19, 1988.

18.       J. S. Hwang and M. H. Rahman, "Frequency‑Dependent ESR Studies of the Stickiness Factor for Spheroidal and Non­spheroidal Nitroxide Spin Probes in Toluene:  Experimen­tal Evidence of the Long Time Tails Effect", 11th International EPR Symposium in conjunction with the 30th Rocky Mountain Conference, Denver, Colorado, U. S. A., Jul. 31‑Aug. 5, 1988.

19.       J. S. Hwang, W. A. Al‑Rashid, and M. M. Saleem, "Aniso­tropic Rotational Reorientation of 2,2,6,6­‑Tetramethyl Piperidine‑1‑Oxide in Anion Exchange Resins:  An EPR Line Shape Study",  11th International EPR Symposium in conjunction with the 30th Rocky Mountain Conference, Denver, Colorado, U. S. A., Jul. 31‑Aug. 5, 1988.

20.       J. S. Hwang and M. H. Rahman, "An EPR Line Width Study of the Anisotropic Reorientation of Dichlorobis (h‑Cyclo­pentadienyl) Vanadium Cp₂VCl₂ in Toluene", Third National Meeting of Chemists, Dhahran, Saudi Arabia, Mar. 12‑14, 1989.

21.       J. S. Hwang, M. M. Saleem, and C. P. Tsonis, "Segmen­tal Size of Poly(phenylacetylene) by the Spin‑Probe Method", 198th ACS National Meeting, Miami Beach, USA, Sept. 10‑15, 1989.

22.       J. S. Hwang and M. H. Rahman, "EPR Line Width Study of the Anisotropic Reorientation of Vanadyl Acetylaceto­nate in Toluene", The Fourth Chemical Congress of North America/202nd ACS National Meeting, New York, NY, USA, Aug. 25‑30, 1991.

23.       J. S. Hwang, G. Burillo, and T. Ogawa, "ESR Studies on the Polymerization of Diacetylene‑Containing Acrylate and Methacrylates", The Fourth Chemical Congress of North America/202nd ACS National Meeting, New York, NY, Aug. 25‑30, 1991.

24.             J. S. Hwang, "The Long Time Tails Effect in EPR at Low Frequen­cies", International Symposium on Recent Advances in ESR Spectroscopies ‑ Application to Chemistry, Physics and Biology, University of Padova, Padova, Italy, Sept. 8‑12, 1991. 

25.       J. S. Hwang and S. J. Lyle, "Spin Labeling Studies of Cross‑linked Polystyrene Resins",  1st International Confer­ence on Chemistry in Industry, Manama, Bahrain, Nov. 14‑16, 1992.

26.       J. S. Hwang, H. Turabi, and L. El‑Sayed, "EPR Study of VO[(CH₃)₂­C=NNCSSCH₃]₂:  A Model Compound for Vanadium Bound to Nitrogen and Sulfur Heteroatoms", 1st Interna­tional Conference on Chemistry in Industry, Manama, Bahrain, Nov. 14‑16, 1992. 

27.       V. Keith, A. Tari, and J. S. Hwang, "Magnetic Proper­ties of (Ho_1-cGd_c)Co₂, 20th International Conference on Low Temperature Physics (LT-20), Eugene, Oregon, USA, Aug. 4-11, 1993.

28.       M. A. Morsy, J. S. Hwang, and G. A. Oweimreen, "A Novel Study of Interactions between Nonmesomorphic Solutes and Nematogenic Solvents using ESR", Abstracts of 207th ACS National Meeting - San Diego (PHYS 265), Mar. 13-17, 1994.

29.       G. A. Oweimreen, M. A. Morsy, and J. S. Hwang, "Phase Diagrams for Binary Mixtures of Nonmesomorhpic Solutes in the Nematogenic Solvents 4-Cyano-4'-N-Pentylbiphenyl from Spin Probe Studies", Abstracts of 207th ACS National Meeting - San Diego (PHYS 266), Mar. 13-17, 1994.

30.       J. S. Hwang, M. A. Morsy, and G. A. Oweimreen, "An ESR Study of the Conformational Properties of Nematic Liquid Crystals using Nitroxide Spin Probes", Abstracts of 207th ACS National Meeting - San Diego (PHYS 305), Mar. 13-17, 1994.

31.       G. A. Oweimreen, M. A. Morsy, and J. S. Hwang, "Phase Diagrams from Spin Probe Studies for Binary Mixtures of Nonmesomorphic Solutes in 5CB", 15th International Liquid Crystal Conference, Budapest, Hungary,  July 3-8,  1994.

32.       A. Tari and J. S. Hwang, "Magnetization and ESR Studies of (Gd_1-cPr_c)Ni₂ Compounds", International Conference on Magneti­zation 1994 (ICM '94), Warsaw, Poland, Aug. 22-26, 1994.

33.     Y. T. Al-Janabi, J. S. Hwang, and H. B. Balkhoyor, "EPR Study of the Stickiness Factor of Dichlorobis(h-Cyclopentadienyl)­vanadium in Chloroform, 18th Interna­tional EPR Symposium, Denver, Colorado, July 23-27, 1995.

34.       M. A. Morsy, J. S. Hwang, and G. A. Oweimreen, "An ESR Study of the Hydrodynamic Behavior of Nitroxide Spin Probes in Nematogenic Liquid-Crystal Solvent", 210th ACS National Meeting, Chicago, Illinois (PHYS 312), August 20-24, 1995.

35.             J. S. Hwang, “An ESR Line Shape Analysis for Nitroxide Spin Probe Exhibiting Different Axes of Rotation”, 210th ACS National Meeting, Chicago, Illinois (PHYS 316), August 20-24, 1995.

36.       R. S. Prosser, J. A. DiNatale, J. S. Hwang, and R. R. Vold, “Paramagnetics, Peptides and Flipping Bicelles”, The 37th ENC Conference, Pacific Grove, California, March 17-22, 1996.

37.       R. S. Prosser, J. A. DiNatale, J. S. Hwang, and R. R. Vold, “Magnetically Aligned Biological Membranes with S_zz > 0: A Deuterium NMR Study”, The 37th ENC, Pacific Grove, California, March 17-22, 1996.

38.       J. A. DiNatale, R. S. Prosser, J. S. Hwang, and R. R. Vold, “Deuterium Quadrupole Echo Spectroscopy of Paramagnetic Solids with Magic Angle Spinning”, The 37th ENC, Pacific Grove, California, March 17-22, 1996.

39.              R. R. Vold, R. S. Prosser , J. A. DiNatale and J. S. Hwang, “Deuterium NMR of  Paramagnetic Materials and Magnetically Ordered Bilayers”, The 38th Rocky Mountain Conference, Symposium on NMR, Denver, Colorado, July 21-26, 1996.

40.              R. R. Vold, R. S. Prosser , J. A. DiNatale and J. S. Hwang, “Towards Structural Elucidation of Membrane Bound Peptides and Proteins”,  17^th International Conference on Magnetic Resonance in Biological Systems, Keystone, Colorado, August 1996.

41.              J. S. Hwang, “Magnetically Aligned Biological Membrane Systems:  A Deuterium NMR Study of a Newly Discovered Smectic Liquid Crystal System”, King Fahd University of Petroleum & Minerals, Department of Chemistry, Dhahran, Saudi Arabia, Oct. 6, 1996.

42.              J. S. Hwang, M. O. H. Al-Turabi, "EPR Study of Vanadyl Model Compounds of VO(N₂S₂) and VO(N₃S) Systems", Abstracts of ACS National Meeting – Spring 1999, Anaheim, California  (PHYS 272), Mar. 21-25, 1999.

43.              J. S. Hwang, “Frequency Dependent Study of the Correlation Functions in EPR Spectroscopy – the Cole-Davidson Approach”, Sixth International Workshop on Electron Magnetic Resonance of Disordered Systems (EMARDIS) and the Fourth International Seminar on Applied EPR, June 5-14, 1999 in Sofia, Bulgaria.

44.              J. S. Hwang and Y. T. Al-Janabi,  “EPR Study of Magnetically Aligned Phospholipid Bilayers with Positive Ordering”, 2^nd Asia-Pacific EPR/ESR Symposium (APES’99), Oct. 31-Nov. 4, 1999 in Hangzhou, China.

45.              J. S. Hwang, “A Method for the Determination of the Anisotropy of Rotation in Nitroxide Spin-Probe Systems”, 2^nd Asia-Pacific EPR/ESR Symposium (APES’99), Oct. 31-Nov. 4, 1999 in Hangzhou, China.

46.              M. O. Hamad and J. S. Hwang, "EPR Line Shape and Translational Diffusion Studies of  Bis (S-Methyl-3-Cyclohexylidenehydrazine-carbothioato)oxovanadium(IV) in Toluene",  23^rd International EPR Symposium,  Broomfield, Colorado, July 30-Aug. 3, 2000.

47.              J. S. Hwang and G. A. Oweimreen, “Anomalous Viscosity in the Phospholipids Bicelle System consisting of DMPC/DHPC/H₂O Mixtures”, 1^st Saudi Science Conference, Dhahran, Apr. 9-11, 2001.

48.              J. S. Hwang and G. A. Oweimreen, “Thermodynamic Properties of PbCl₂ Solution from Electrochemical Measurements”, 1^st Saudi Science Conference, Dhahran, Apr. 9-11, 2001.

49.              J. S. Hwang, “EPR Line Shape and Translational Diffusion Studies of a Vanadium Complex with Acetone Schiff Base in Toluene”,  Seventh International Workshop on Electron Magnetic Resonance of Disordered Systems (EMARDIS) and the Fifth International Seminar on Applied EPR, June 9-14, 2001, in Sofia, Bulgaria.

50.              J. S. Hwang, “EPR Line Width Study of a Nitroxide Spin Probe of Spherocone Shape in Toluene”,  2001 Gordon Research Conference on Magnetic Resonance, Roger Williams University, Bristol, RI,  June 17-22, 2001.

51.              M. O. Hamad and J. S. Hwang, " Translational Diffusion and EPR Line Shape Studies of a Vanadium Complex with Acetone Schiff Base in Toluene”, Proceedings of the 224^th American Chemical Society Meeting, Boston, MA, USA, August 2002. 

52.              J. S. Hwang and G. A. Oweimreen, “Anisotropy of Rotation of 2,2,6,6-tetramethyl piperidine 1-oxide in the Vicinity of the Nematic-to-isotropic Phase Transition of 4-n-pentyl-4’-cyanobiphenyl”, Proceedings of the 26^th International EPR Symposium, Denver, USA, July 27-31, 2003, P. 62.

53.              G. A. Oweimreen and J. S. Hwang, “The effect of N-(4-n-butyl benzilidine) 4-amino 2,2,6,6-tetramethyl piperidine 1-oxide (BBTMPO) on the nematic-to-isotropic phase transition of 4-n-pentyl-4’cyanobiphenyl”, Proceedings of the Sixth International Conference on Materials Chemistry, MC6: Frontiers and Interfaces, University of Sheffield, UK, July 29 – August 1, 2003, P. 18.

54.              R. Rakhimov; E. Jackson; J. Hwang; A. Aleksandrov, “Mechanochemical synthesis of Co, Ni, Fe nanoparticles in polymer matrices (EU-11)”,  Proceedings of the International Conference on Magnetism and Magnetic Materials, Anaheim, USA,  January 5-9 2004.

55.              R. Rakhimov; J. Hwang; A. Aleksandrov, “Paramagnetic properties of covalently linked mixed valence chromium complexes in polymers (EU-9)”, Proceedings of the International Conference on Magnetism and Magnetic Materials, Anaheim, USA,  January 5-9 2004.

56.              J. S. Hwang and G. A. Oweimreen, "Solubility Product of PbCl₂ from Electrochemical Measurements", Abstracts of the ICCT–2004–18^th IUPAC – International Conference on Chemical Thermodynamics,  August 17-21, 2004, Beijing, China.

57.              J. S. Hwang and G. A. Oweimreen, “An Experimental Verification of a Second-Order Perturbation Effect”, 18^th International Conference on Chemical Education.  ‘Chemistry Education for the Modern World’, August 3-8, 2004, Istanbul, Turkey.

58.              J. S. Hwang and G. A. Oweimreen, "Thermodynamics of the Solubility of PbCl₂ in water from Electrochemical Measurements",  Abstracts of the 18^th International Conference on Chemical Education.  ‘Chemistry Education for the Modern World’, August 3-8, 2004, Istanbul, Turkey.

M.S. THESIS SUPERVISION

1.         "Paramagnetic  Resonance of Sodalite", A. N. Saleh, Dept. of Physics, King  Saud  University, May 1985. (As committee member).

2.         "ESR  Study  of  Isotropic  and  Anisotropic Molecular Motions", W. A. Al‑Rashid, Dept. of Chemistry, KFUPM, Dec. 1985. (As committee chairman).           

3.                 "Synthesis and Structural Studies of a‑Furildioxime Com­plexes", Aqil Khan, Dec. 1985, Dept. of Chemistry, KFUPM (As committee member).

4.                 "EPR Studies of Anisotropic Rotational Reorientation and Slow Tumbling in Liquids and Frozen Media", M. H. Rahman, June 1988, Dept. of Chemistry, KFUPM. (As committee chairman).

5.                 "Magnetization and Electron Spin Resonance  Studies of Laves Phase Ho: (Ce_1‑xGd_x)Rh₂ Compounds", M. S. Kariapper, June 1989, Dept. of Physics, KFUPM. (As committee member).

6.                 "EPR Study of Vanadyl Complexes with Schiff Bases Derived from S‑Methyl‑Carbodithioato‑Hydrazine", M. O. H. Al‑Turabi, Jan. 1992, Dept. of Chemistry, KFUPM.  (As committee chairman).

7.                 "A Study of Translational Diffusion Constants of Paramagnetic Species in Solution", H. B. Balkhuyour, June 1993, Dept. of Chemistry, KFUPM. (As committee chairman).

8.                 “A Study of Chemical Structural Changes of Sulfur Compounds in Fuel Oils during Desulfurization”, (In Progress), S. A. Al-Mulhem, Dept. of Chemistry, KFUPM.  (As committee member).

PH.D. DISSERTATION SUPERVISION

1.                  "An  Electron  Spin  Resonance Study of Solute-Solvent Interactions  in  Liquid  Crystal Solvents,"   M.  A. Morsy,  Oct.  1993,  Dept. of  Chemistry,  KFUPM.  (As thesis advisor/committee chairman).

2.                  "Reaction Kinetics of Some Aromatics Alcohols in the Excited State," Than Htun, June 1994, Dept. of Chemis­try, KFUPM. (As thesis advisor/committee member).

3.                  "Chemometric Optimization and Kinetic Developments in Flow Injection Analysis", F. E. O. Suliman, Dec. 1995, Dept. of Chemistry, KFUPM. (As committee member).

4.                  "Anisotropic Rotational Reorientation in Liquids, Novel Phosphatidilcholines, and Newly Synthesized Buckminsterfullerenes”,  Y. T. Al-Janabi, June 1997, Dept. of Chemistry, KFUPM. (As thesis advisor/committee chairman).

5.                  “ESR Study of Vanadium Model Compounds Containing Nitrogen and Sulfur Heteroatoms”, M. O. Hamad, June 1998, Dept. of Chemistry, KFUPM.  (As thesis advisor/committee chairman).