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Dr. Holz Dr. Manfred Holz
Akademischer Direktor i.R.
Gruppe:

Head of the former NMR research group


Tel.: +49 7245 3839
manfred holzMjh5∂chemie uni-karlsruhe de

Heidelbeerweg 23
D-76448 Durmersheim
Phone +49 7245 3839
Fax +49 7245 3839


Dr. Manfred Holz

Nuclear magnetic resonance (NMR), one of the most powerful spectroscopic methods in many disciplines, has been introduced as a research tool into our institute already in 1964 by H.G. Hertz.
In the following 25 years a great number of pioneering experimental and theoretical NMR studies have been performed by H.G. Hertz and his group . Since 1970 M. Holz was a member of this group. One of the main research aims was the development and application of NMR techniques for the study of the chemical physics of liquid systems and, in particular, of electrolyte solutions.
From 1990 - 2001 this NMR group has been led by Dr Manfred Holz, who retired in 2001.

Publications, see below

 

Research topics of the former NMR group

Fields of Research:

  • Microdynamics and microstructure of molecular liquids and ionic solution
  • Hydrophobic effects --- Self-diffusion in molecular liquids
  • NMR- Relaxation --- Development of NMR - methods
  • Electrophoretic NMR  ---Diffusion and ionic migration in porous systems
 
In the following some of the previous main fields of research of M. Holz and his group are described in more detail:
 

A. Introduction of NMR techniques into the field of electrochemistry: Electrophoretic NMR

NMR experiments in presence of an external electric field, and thus in presence of an electric current in the conducting sample under investigation,  allow to use the advantages of this highly selective and non-invasive spectroscopic technique with a great variety of methods, in the field of electrochemistry with all its applications. Therefore, since the early 1980's, it was the aim of research to develop methodically and technically those experiments. Already, in 1982  the first electrophoretic mobility measurements by NMR were made, opening the perspective of a completely new type of measurements in electrochemistry.
The combination of NMR and in-situ electrophoresis, today called "Electrophoretic NMR" (ENMR), introduces the electric charge (electric current) as a new parameter in NMR and allows for example the detection and the measurement of mobilities and transference numbers of charged species in complex mixtures, which are not accessible to classical methods. In the years 1998-2006 cou these measurements could be extended  to porous systems, allowing for the first time the direct observation of the migration of ions in an electric field within pores .

 

B. Self-diffusion studies in liquids, transport and structural investigations in disordered media

The group around M.Holz was interested in the translational dynamics of neat liquids, confined liquids and all kind of solutes (ions, noble gases  and molecular species) in those systems. Furthermore, in pure liquids the "dynamic isotope effect", i.e. the influence of mass change on the translational and rotational mobility of molecules in liquids has been systematically investigated. The pulsed-field –gradient (PFG) NMR self-diffusion and flow studies coüld be used to gain information about the morphology of porous media ("Dynamic Imaging"). The research group applied these techniques to systems of technical interest, e.g. fluid-filled granular materials, gels and natural rocks, with the aim to introduce novel NMR methods into engineering sciences.  

 
 

C. Study of weak association phenomena in liquid multicomponent systems.

"Hydrophobic effects" as hydrophobic association play an important role in supramolecular chemistry, in biochemistry and in molecular recognition in aqueous systems. By using the intermolecular nuclear dipole - dipole  interaction via NMR relaxation and PFG self-diffusion measurements the so-called  association parameter A could be measured. This A-parameter is connected with an integral over the corresponding atom - atom pair correlation function g(r) of the nuclei carrying atoms . Association or de-association of certain species in fluid mixtures can thus be observed by a sharpening or flattening of g(r). So, H.G.Hertz and M.Holz and his groups studied for example  the influence of salts or other solutes on the association tendency of organic species in aqueous systems  with the aim to contribute e.g. to the under-standing of the so-called "lyotropic" or "Hofmeister series"

 

D. Basic experimental investigation of intermolecular nuclear quadrupole relaxation (QF-relaxation)

In fluid systems the quadrupole relaxation of nuclides with spin >1/2 residing in  monatomic particles has been experimentally studied. These species were for example: 7Li+, 23Na+, 25Mg2+, 35Cl-, 81Br-, 87Rb+, 133Cs+, 21Ne,  83Kr and 131Xe. The ionic nuclei could then be used to probe their closest vicinity in an electrolyte solution yielding information about the structure of the first coordination sphere and possible ion pair formation . The noble gas nuclides are of particular interest as inert probes on an atomic level which can be utilized in fluids for the investigation of local structures. Thus we could recently contribute to the understanding of peculiar anomalies of supercooled water and water in hydrophobic hydration spheres.

 

 

Publications Dr. Holz

1974 – 1980


1. Nuclear Magnetic Relaxation and Selective Solvation of Rb+ in Water-Methanol Mixtures, P. Neggia, M. Holz, and H.G. Hertz, J. Chim. Phys. 71, 56-60 (1974)


2. 35Cl, 81Br, and 127I Nuclear Magnetic Relaxation in Aqueous Solutions of Alkali Halides, H.G. Hertz, M. Holz, R. Klute, G. Stalidis, and H. Versmold, Ber. Bunsenges. Phys. Chem. 78, 24-35 (1974)


3. Nuclear Magnetic Relaxation of Alkali Metal Ions in Aqueous Solutions H. G. Hertz, M. Holz, G. Keller, H. Versmold, and C. Yoon, Ber. Bunsenges. Phys. Chem. 78, 493-509 (1974)


4. Hydrophobic Hydration and Quadrupolar Magnetic Relaxation of Ionic Nuclei H.G. Hertz and M. Holz, J. Phys. Chem. 78, 1002-1013 (1974)


5. The Effect of Structure on Ion Self-Diffusion in Concentrated Electrolyte Solutions H.G. Hertz, M. Holz, and R. Mills, J. Chim. Phys. 71, 1355-1362 (1974)


6. Cd-113 Nuclear Magnetic Relaxation in Aqueous Cadmium Perchlorate Solutions M. Holz, R.B. Jordan, and M.D. Zeidler, J. Magn. Resonance, 22, 47-52 (1976)


7. Nuclear Spin Relaxation in Fluids M. Holz and M.D. Zeidler, in "Nuclear Magnetic Resonance", Specialist Periodical Reports, Vol. 5, The Chemical Society, London 1976, p.99-128


8. Nuclear Magnetic Relaxation of Alkali Halide Nuclei and Preferential Solvation in Methanol + Water Mixtures M. Holz, H. Weingärtner, and H.G. Hertz, J. Chem. Soc. Faraday I, 73 , 71-83 (1977)


9. Magnetic Relaxation of Chloride Ions in Aqueous Solutions M. Holz and H. Weingärtner, J. Magn. Resonance, 27, 153-155 (1977)


10. Nuclear Spin Relaxation in Fluids M. Holz and M.D. Zeidler, in "Nuclear Magnetic Resonance", Specialist Periodical Reports, Vol. 6, The Chemical Society, London 1977, p.92-121


11. D2O-H2O Isotope Effect on Nuclear Magnetic Relaxation of Alkali Halide Nuclei and Preferential Solvation in Mixed Solvents M. Holz (1978)


12. Some Structural Aspects in Binary Aqueous Mixtures of Simple Amides from Rotational Molecular Motions H. Weingärtner , M. Holz, and H.G. Hertz, J. Solution Chem. 7, 689-704 (1978)


13. Nuclear Magnetic Relaxation and Ionic Solvation of 23Na+ and 81Br- in Aqueous Mixtures of Simple Amides M. Holz, H. Weingärtner, and H.G. Hertz, J. Solution Chem. 7, 705-720 (1978)


14. Nuclear Spin Relaxation in Fluids M. Holz and A. Kratochwill, in "Nuclear Magnetic Resonance", Specialist Periodical Reports, Vol. 7, The Chemical Society, London 1978, p.160-192


15. EPR Relaxation of Aqueous Ni2+ Ion H.L. Friedman, M. Holz, and H.G. Hertz, J. Chem. Phys. 70, 3369-3383 (1979)


16. Nuclear Spin Relaxation in Fluids M. Holz and H. Weingärtner, in "Nuclear Magnetic Resonance", Specialist Periodical Reports, Vol. 8 , The Chemical Society , London 1979 , p.143-173


17. 25Mg2+ Nuclear Magnetic Relaxation in Aqueous Solution M. Holz, S. Günther, O. Lutz, A. Nolle, and P.G. Schrade, Z. Naturforschung, 34a, 944-949 (1979)

18. Automation and Control in High Power Pulsed NMR A. Geiger and M. Holz , J. Phys. E.: Sci. Instrum., 13, 697-707 (1980)


19. Study of Weak Mn2+ and Cu2+ Complexes by a Nuclear Magnetic Resonance Method, M. Holz, N.W. Lutz, F. Blumenthal, and H.G. Hertz, J. Solution Chem. 9, 381-394 (1980)


20. NMR Measurements of Internal Magnetic Field Gradients Caused by the Presence of an Electric Current in Electrolyte Solutions M. Holz and Ch. Müller, J. Magn. Resonance , 40, 595-599 (1980)

21. NMR Relaxation Study of Li+-Ni2+ Interaction in Aqueous Solution F. Hirata, H.L. Friedman, M. Holz, and H.G. Hertz, J. Chem. Phys. 73, 6031-6038 (1980)

 

1981 – 1985



22. Nuclear Magnetic Resonance as New Method for the Detection of Moving Boundaries in Transference Number Measurements M. Holz and J. Radwan, Z. Phys. Chem. Neue Folge, 125 , 49-60 (1981)


23. Self -Diffusion Coefficients in the Mixture Dimethylformamide-Benzene, Conclusions Concerning Association M. Holz and H.G. Hertz, Z. Phys. Chem. Neue Folge, 125 , 61-66 (1981)


24. Direct Measurement of Single Ionic Drift Velocities in Electrolyte Solutions. An NMR Method M. Holz and Ch. Müller, Ber. Bunsenges. Phys. Chem. 86 , 141-147 (1982)


25. NMR Relaxation Study of the Al3+-Ni2+ Interaction in Aqueous Solution M. Holz, H.L. Friedman, and B.L. Tembe, J. Magn. Resonance, 47, 454-461 (1982)


26. Preferential Solvation of Na+ in Aqueous Mixtures of Simple Amides. Application of the D2O-H2O Isotope Effect to 23Na+ Nuclear Magnetic Relaxation M. Holz and C.K. Rau, J. Chem. Soc. Faraday Trans. I, 78 , 1899-1910 (1982)


27. Gepulste Kernspinresonanz M. Holz and B. Knüttel, Phys. Blätter, 38 , 368-374 (1982)


28. Demonstration of Local Symmetry Around Na+ and Rb+ Solvated by Liquid Acetonitrile. A Nuclear Magnetic Relaxation Study B.M. Braun and M. Holz, Z. Phys. Chem. Neue Folge, 135 , 77-88 (1983)


29. Separation of Local Asymmetry and Selective Solvation Effects Using the Quadrupole Relaxation of 23Na+ and 87Rb+ in Acetonitrile-Water Mixtures B.M. Braun and M. Holz, J. Solution Chem., 12 , 685-701 (1983)


30. Internal Motion of the Methanol Molecule in the Liquid, Dependence on Added Solvent CCl4 H.G. Hertz and M. Holz, Z. Phys. Chem. Neue Folge, 136 , 81-87 (1983)


31. Percolative Phenomena in Microemulsions of the "One-Component Macrofluid" Type H.F. Eicke, R. Hilfiker, and M. Holz, Helv. Chim. Acta, 67, 361-372 (1984)


32. NMR in Presence of an Electric Current. Simultaneous Measurements of Ionic Mobilities, Transference Numbers, and Self-Diffusion Coefficients Using an NMR Pulsed Gradient Experiment, M. Holz, O. Lucas, and Ch. Müller, J. Magn. Resonance, 58 , 294-305 (1984)


33. A New Analysis of the H+ Conductance Mechanism in Aqueous Solution H.G. Hertz, M. Holz, B.M. Braun, T. Frech, R. Maurer, and K.J. Müller, Z. Phys. Chem. Neue Folge, 141 , 133-138 (1984)


34. Molecular Reorientation and Na+ Solvation in Hexamethylphosphoric Triamide (HMPT) and HMPT-Water Mixtures. A Nuclear Magnetic Relaxation Study M. Holz and A. Sacco, Mol. Phys., 54 , 149-160 (1985)


35. Longitudinal Proton Relaxation Rates in Aqueous Ni2+ Solutions as a Function of the Temperature, Frequency, and pH Value H.G. Hertz and M. Holz, J. Magn. Resonance, 63 , 64-73 (1985)


36. Square-Root Concentration Dependence of Nuclear Magnetic Relaxation Rates in Strong Electrolyte Solutions A. Sacco, M. Holz, and H.G. Hertz, J. Magn. Resonance, 65 , 82-88 (1985)

 

1986 – 1990



37. Influence of NMR Measuring Sequences and Gradient Variation on Signals from Flowing Systems. Magnetic Resonance Tomography on Experimental Models E. Strecker, M. Holz, K. Meyer-Waarden, J. Diggs, D.S. Rausch, and A.E. James, European J. of Radiology, 6 , 53-58 (1986)


38. New Developments in NMR of Simple Electrolyte Solutions M. Holz, in: "Progress in Nuclear Magnetic Resonance Spectroscopy“, Eds. J.W. Emsley, J. Feeney and H.L. Sutcliffe, Pergamon Press, Oxford, 18 , 327-403 (1986)


39. Modification of the Pulsed Magnetic Field Gradient Method for the Determination of Small Velocities by NMR, M. Holz, Ch. Müller, and A.M. Wachter, J. Magn. Resonance, 69 , 108-115 (1986)


40. Kontaktfreie Messung von Stofftransport durch NMR M. Holz, Nachr. Chem. Tech. Lab., 34 , 858-864 (1986)


41. Magnetic Resonance Tomography for the Visualization of the Diffusion of Gd-DTPA in Agar Gel and in Brain Tissue - in vitro Studies, M. Holz, E.P. Strecker, and K.H. Weiß, European J. of Radiology, 7 , 137-141 (1987)


42. Activation Energies for Rotational Molecular Motions and for 23Na+ Quadrupole Relaxation in Two Binary Solvent Mixtures M. Holz and A. Sacco, Z. Phys. Chem. Neue Folge, 153 , 129-139 (1987)


43. Influence of the Debye-Hückel Ion-Ion Distribution on NMR Parameters of Ionic Nuclei, M. Holz and A. Sacco, Z. Phys. Chem. Neue Folge, 155 , 133-143 (1987)


44. Nuclear Magnetic Relaxation of Ionic Nuclei Moving in an External Electric Field R.E.S. Hofmann and M. Holz, Chem. Phys. Letters, 142 , 492-497 (1987)


45. Translational and Rotational Molecular Motion in Solutions of Alkali Halides in Dimethyl Sulphoxide, A. Sacco, M. Carbonara, and M. Holz, J. Chem Soc. Faraday I, 85 , 1257-1265 (1989)


46. The Effect of Site-Specific Isotopic Substitutions on Transport Coefficients of Liquid Methanol, H. Weingärtner, M. Holz, A. Sacco, and M. Trotta, J. Chem. Phys., 91 , 2568-2574 (1989)

47. Cation-Anion Association in Strong Electrolytes at High Dilution as Observed by Nuclear Magnetic Quadrupole Relaxation of Ionic Nuclei H.G. Hertz, M. Holz, and A. Sacco, Chemica Scripta, 29 , 291-303 (1989)


48. Rotational Molecular Motion and Solvation of Na+ and Cs+ in Water- Dimethylacetamide (DMA), M. Holz, A. Sacco, and M. Trotta, J. Solution Chem., 19 , 193-205 (1990)


49. Isotope Effects upon Translational Diffusion as a Probe for Translation-Rotation Coupling in Molecular Liquids, M. Holz, H. Weingärtner, and A. Sacco, Ber. Bunsenges. Phys. Chem., 94 , 332-336 (1990)

 

1991 – 1995



50. Cation-Cation Association of Tetramethylammonium Ions in Aqueous Mixed Electrolyte Solutions, M. Holz and K.J. Patil, Ber. Bunsenges. Phys. Chem., 95 , 107-113 (1991)


51. Calibration in Accurate Spin-Echo Diffusion Measurements Using 1H and Less-Common Nuclei, M. Holz and H. Weingärtner, J. Magn. Resonance, 92 , 115-125 (1991)

52. Solvation of Na+ in Methanol + N,N-Dimethylformamide Solutions. A Nuclear Magnetic Relaxation Study Using Dynamic Solvent Isotope Effects, A. Sacco, M.C. Piccini, and M. Holz, J. Solution Chem., 21 , 109-120 (1992)


53. Nuclear Magnetic Relaxation of Atomic Neon-21 in Liquid Solution, R.K. Mazitov, H.G. Hertz, R. Haselmeier, and M. Holz, J. Magn. Resonance, 96 , 398-402 (1992)


54. 129Xe NMR as a New Tool for Studying Gas Diffusion in Liquids: Self-Diffusion of Xenon in Water
H. Weingärtner, R. Haselmeier, and M. Holz, Chem. Phys. Letters, 195, 596-601 (1992)


55. Direct Detection of an Attractive Interaction between Anions and Hydrophobically Hydrated Unpolar Groups, M. Holz and M. Sörensen, Ber. Bunsenges. Phys. Chem., 96 , 1441-1447 (1992)


56. Nuclear Magnetic Resonance Study of Self-association of Small Hydrophobic Solutes in Water: Salt Effects and the Lyotropic Series, M. Holz, R. Grunder, A. Sacco, and A. Meleleo, J. Chem. Soc. Faraday Trans., 89, 1215-1222 (1993)


57. Investigation of an Unusual Frequency Dependence of Nuclear Magnetic Relaxation Rates in Aqueous Solutions of Tetramethylammonium Chloride F.D. Sacher, M. Holz, and H.G. Hertz, J. Magn. Resonance, A 103 , 61-71 (1993)


58. Design of a New Electrophoretic NMR Probe and its Application to 7Li+ and 133Cs+ Mobility Studies, M. Holz, D. Seiferling, and X. Mao, J. Magn. Resonance, A 105 , 90 -94 (1993)


59. Self Diffusion of Neon in Water by 21Ne NMR, M. Holz, R. Haselmeier, R.K. Mazitov, and H. Weingärtner, J. Amer. Chem. Soc., 116, 801 -802 (1994)


60. Study of the Structure - breaking Effect in Aqueous CsCl Solutions Based on H2O/D2O Isotope Effects on Transport Coefficients and Microdynamical Properties, A. Sacco, H. Weingärtner, B.M. Braun, and M. Holz , J. Chem. Soc. Faraday Trans., 90, 849 - 853 (1994)


61. Electrophoretic NMR, M. Holz , Chemical Society Reviews , 23 , 165 -174 (1994)


62. Translational Diffusion in C60 and C70 Fullerene Solutions, R. Haselmeier , M. Holz , M.M. Kappes , R.H. Michel , and D. Fuchs , Ber. Bunsenges. Phys. Chem. , 98 , 878 - 881 (1994)


63. Multinuclear Study of RF Losses in NaCl / D2O Solutions, X. Mao and M. Holz , Appl. Magn. Reson. , 6 , 529 - 536 (1994)


64. 14 N Quadrupole Relaxation of DMF and DMF-d7 in DMSO at Infinite Dilution, X. Mao and M. Holz , Z. f. Naturforsch. A , 49 , 1016 - 1018 (1994)


65. Dynamic Isotope Effect on Relaxation of Quadrupolar Nuclei in Twelve Simple Organic Molecules, X. Mao and M. Holz , Science in China (B) , 24 , 804 - 809 (1994), English version : Science in China ( Series B ) , 38 , 393 – 400 (1995)


66. Water Dynamics Near a Dissolved Noble Gas. First Direct Experimental Evidence for a Retardation Effect. R. Haselmeier , M. Holz , W. Marbach , and H. Weingärtner , J. Phys . Chem ., 99 , 2243 - 2246 (1995)


67. Ion - Ion De-Association and Association of Strong Electrolytes at High Dilution from Nuclear Magnetic Relaxation Measurements, E. Detscher , H. G. Hertz , M. Holz , and X. Mao , Z. f. Naturforsch. , 50a , 487 - 501 (1995)


68. Self - diffusion of the Perchlorate Ion in Aqueous Electrolyte Solutions Measured by 35 Cl NMR Spin - Echo Experiments.
S. R. Heil , M. Holz ,T. M. Kastner , and H. Weingärtner , J. Chem . Soc .,Faraday Trans. , 91 , 1877 - 1880 (1995)


69. Temperature Dependence of 21Ne , 83 Kr and 131 Xe Quadrupole Relaxation and of Xenon Diffusion in Polyatomic Solvents .
M. Holz , R. Haselmeier , A. Klein , and R. K. Mazitov , Appl . Magn . Resonance , 8, 501 - 519 (1995 )


70. Nuclear Magnetic Relaxation as a Selective Probe of Solute - Solvent and Solute - Solute Interactions in Multi-component Mixtures. M . Holz , J . Mol . Liquids , 67 , 175 - 191 ( 1995 ), 1996 – 2000


71. Experimental Study of Dynamic Isotope Effects in Molecular Liquids . Detection of Translation-rotation Coupling .
M. Holz , X. Mao , D. Seiferling , and A. Sacco , J. Chem. Phys. , 104 , 669 - 679 (1996 )


72. NMR Study of the Influence of Urea on the Self-association of n-Propanol in Water and Comparison with Kirkwood - Buff Integral Results. A. Sacco , A. Asciolla , E. Matteoli , and M. Holz , J. Chem. Soc. Faraday Trans., 92 , 35 - 40 ( 1996 )


73. Effect of Xenon upon the Dynamical Anomalies of Supercooled Water. A Test of Scaling - law Behavior . H.Weingärtner , R.Haselmeier , and M. Holz , J. Phys . Chem. , 100 , 1303 - 1308 ( 1996 )


74. Electrolytes, M . Holz , in " Encyclopedia of Nuclear Magnetic Resonance " , D.M. Grant and R. K. Harris Eds. , J . Wiley and Sons ,Chichester , 1996 , Vol.3 , p.1857 - 1864


75. A Mobility Filter for the Detection and Identification of Charged Species in Liquid Multi-Component Mixtures by ENMR Phase Difference Spectroscopy. S. R. Heil and M. Holz , Angew. Chem. Int. Ed. Engl. , 35 , 1717 - 1720 ( 1996 )

German version :

Ein Beweglichkeitsfilter zum Nachweis und zur Identifizierung elektrisch geladener Teilchen in komplexen flüssigen Mischungen mit ENMR-Phasendifferenzspektroskopie.
S. R. Heil und M. Holz , Angew. Chem. , 108 , 1801 - 1804 ( 1996 )


76. Self - diffusion Coefficient and Apparent Molar Volume Studies of Crown Ethers in Aqueous ( D2O ) and CDCl3 Solutions .
K. J. Patil , S. R. Heil , M. Holz , and M. D. Zeidler , Ber. Bunsenges. Phys. Chemie , 101 , 91 - 95 ( 1997 )


77. NMR Studies on Hydrophobic Interactions in Solution. Part 2. : Temperature and Urea Effect on the Self - association of Ethanol in Water. A. Sacco and M. Holz , J. Chem. Soc., Faraday Trans. , 93 , 1101 - 1104 ( 1997 )


78. Quadrupolar Relaxation of 21Ne, 83Kr and 131Xe Dissolved in Acetonitrile . A Molecular Dynamics Study. M. Odelius , M. Holz , and A. Laaksonen , J .Phys . Chem . A , 101 , 9537 - 9544 (1997)


79. High Temperature 93Nb NMR Study of Liquid NbCl5 and its Mixtures with Various Alkali Chlorides. E. Schellkes , M. Holz and W. Freyland , in : Refractory Metals in Molten Salts , D.H. Kerridge and E.G. Polyakov Eds., Kluwer Acad. Publishers , 1998 , p. 43-60


80. NMR Studies on Hydrophobic Interactions in Solution Part 3: Salt effects on the self-association of ethanol in water at two different temperatures. A. Sacco , F. M. De Cillis and M. Holz , J. Chem. Soc., Faraday Trans., 94 , 2089 - 2092 (1998)



81. Electrophoretic NMR . A Novel NMR Technique and its Applications. M. Holz , in : Diffusion in Condensed Matter , J. Kärger , P. Heitjans and R. Haberlandt Eds. , Friedr.Vieweg & Sohn , Braunschweig , 1998 , p. 245 -264



82. Electrical Transport in a Disordered Medium : NMR Measurement of Diffusivity and Electrical Mobility of Ionic Charge Carriers .
S. R. Heil and M. Holz , J. Magn. Resonance , 135 , 17 - 22 (1998)



83. Nuclear Magnetic Relaxation Studies for Investigating the Hydration of 15-Crown-5 and 18-Crown-6 Ethers in Aqueous and Aqueous Salt Solutions. K. J. Patil , T. M. Kirschgen , M. Holz and M. D. Zeidler, J. Mol. Liquids , 81 , 201 -212 (1999)



84. NMR Studies on Hydrophobic Interactions in Solution. Part 4: Temperature and concentration dependence of hydrophobic self-association of tert-butanol in water. M. Mayele, M. Holz , and A. Sacco, Phys.Chem.Chem. Phys. , 1 , 4615 - 4618 (1999)



85. Microscopic Structure and Dynamics of Expanded Liquid NbCl5 : A 93Nb NMR and Micro Raman Study. E. Schellkes, M. Holz and W. Freyland , in: Proceedings of “The International George Papatheodorou Symposium” Eds.: S. Boghosian, V. Dracopoulos, C. G. Kontoyannis and G. A. Voyiatzis, Institute of Chemical Engineering and High Temperature Chemical Processes, Patras, Greece, 1999 , p. 34 - 37

 

2000 - 2006


86. On the Density Dependence of the Rotational Dynamics of Carbon Dioxide and its 17O Quadrupole Coupling Constant.
M. Holz , R. Haselmeier , A. J. Dyson and H. Huber, Phys. Chem. Chem .Phys. , 2, 1717 –1720 (2000)



87. NMR Studies on Hydrophobic Interaction in Solution, Part 5: Effect of urea on the hydrophobic self-association of tert-butanol in water at different temperatures. M. Mayele and M. Holz , Phys. Chem. Chem .Phys. , 2, 2429 – 2434 (2000)



88. 1H NMR Relaxation of Methanol CH3OD up to High Pressures of 250 MPa  and to 523 K, S. Müßig , E. U. Franck and M. Holz , Z. Phys. Chem. , 214 , 957 - 968 (2000)



89. Temperature-dependent Self-diffusion Coefficients of Water and Six Selected Molecular Liquids for Calibration in Accurate 1H NMR PFG Measurements. M. Holz , S. R. Heil, and A. Sacco, Phys. Chem. Chem .Phys. , 2 , 4740 - 4742 (2000)



90. Probing the Pore Space of Geothermal Reservoir Sandstones by Nuclear Magnetic Resonance . G. Frosch , J. E. Tillich , R. Haselmeier , M. Holz , and E. Althaus , Geothermics , 29, 671 - 687 (2000)



91. Isotope Effect on the Translational and Rotational Motion in Liquid Water and Ammonia. E. H. Hardy , A. Zygar, M. D. Zeidler, M. Holz and F. D. Sacher, J. Chem. Phys. , 114 , 3174 – 3181 (2001)



92. Electrophoretic NMR Studies of Electrical Transport in Fluid -filled Porous Systems. M. Holz , S.R. Heil, and I. A. Schwab, Magn .Reson. Imaging , 19 , 457-463 (2001)



93. New approach to the characterisation of porous media by NMR flow-diffraction studies and time-dependent velocity measurements (Abstract of a poster) J. E. Tillich, S. R. Heil, and M. Holz, Magn .Reson. Imaging , 19 , 586 – 586 (2001)



94. NMR Studies of Self-diffusion in Liquids. Hermann Weingärtner and Manfred Holz, Annu. Rep. Prog. Chem. , Sect. C, 98 , 121 – 155 (2002)


95. Approaches to the Characterization of Disordered Porous Systems by PGSE-NMR Observation of Diffusion, Flow and Electrophoretic Migration. (Abstract of an invited lecture), Manfred Holz, Joachim E. Tillich, and Mehmet Bardakci, Magn. Reson. Imaging , 21 , 416 – 416 (2003)


96. A New Approach for Probing the Fractal Pore Geometry of Sandstones by PFG-NMR Studies. (Abstract of a poster)
Hansgeorg Pape, Joachim E. Tillich, and Manfred Holz, Magn. Reson. Imaging , 21 , 423 – 423 (2003)



97. Approaches to the Characterization of Disordered Porous Systems by PGSE-NMR Observation of Diffusion and Flow. (Abstract of a poster) Joachim E. Tillich, and Manfred Holz, Magn. Reson. Imaging , 21 , 431 – 431 (2003)



98. Al2O3 - H2O Suspensions as porous Media: NMR Investigation of Structure and Transport. (Abstract of a poster)
Detlef Bork and Manfred Holz, Magn. Reson. Imaging , 21 , 445 – 445 (2003)



99. High Temperature 93Nb NMR and Raman Spectroscopic Investigation of the Structure and Dynamics of Solid and Liquid NbCl5 - Alkali Chloride Solutions. E. Schellkes, X. Hong, M. Holz, U. Huniar, R. Ahlrichs, and W. Freyland, Phys. Chem. Chem. Phys., 5 , 5536 – 5543 (2003)



100. Influence of Additives on Hydrophobic Association in Polynary Aqueous Mixtures. An NMR Relaxation and Self-Diffusion Study. Manfred Holz and Manghaiko Mayele in : Thermodynamic Properties of Complex Fluid Mixtures, Ed.: G.Maurer, Wiley-VCH Verlag, Weinheim Germany, 2004, p. 150-183



101. Field-assisted Diffusion Studied by Electrophoretic NMR. Methods and Applications. M.Holz in : Diffusion in Condensed Matter, Methods, Material, Models, Eds.:Paul Heitjans, Jörg Kärger, Springer, Berlin, 2nd ed., 2005



102. Pore geometry of sandstone derived from pulsed field gradient NMR. Hansgeorg Pape, Joachim E. Tillich and Manfred Holz, J.Applied Geophysics, 58, 232 – 252 (2006)



103. Combination of Time-dependent Self-diffusion Measurements (Dynamic Imaging) with Magnetic Resonance Imaging.
Joachim E.Tillich, Gisela Guthausen and Manfred Holz, Chemical Engineering & Technology 29, 862-867 (2006)


104. Characterisation of Structure and Transport in Porous Media by Pulsed-Field-Gradient (PFG) NMR Technique. Part I. Master Curve and Characteristic Inner Length. Mehmet Bardakci, Joachim E. Tillich and Manfred Holz, Chemical Engineering & Technology, 29, 847-853 (2006)