PUBLICATIONS
1. ESR Measurement
of Quadrupole Coupling in N(SO3)=,
D.M. Close and H.N. Rexroad, J. Chem. Phys. 50, 3717-3721 (1969).
2. Ultraviolet Photobleaching
of Free Radicals in γ‑Irradiated Amino Acids, D.M. Close and R.S.
Anderson, Radiat. Res. 53, 349-357 (l973).
3. Electron Spin Resonance of X‑Irradiated β‑Alanine,
R.B. Lyons, D.M. Close, and
R.S. Anderson, Chem.Phys. Lett.
20, 442-443 (1973).
4. ESR of γ‑Irradiated Single Crystals
of DL‑Threonine at Room Temperature, D.M. Close
and R.S. Anderson, J. Chem. Phys.
60, 2828-2832 (l974).
5. ESR of x‑Irradiated Single Crystals
of 3'‑Cytidylic Acid; H‑Abstraction From C5' of the Sugar Moiety,
W.A. Bernhard, D.M. Close, K.R. Mercer, and J.C. Corelli, Radiat. Res. 66, 19-32 (l976).
6. A Stable Radical in the Ribose Moiety of
X‑Irradiated 3'‑Cytidylic Acid at its Relation to a Similar Radical
in Cytidine, An ESR‑ENDOR
Study, W.A. Bernhard, J. Hüttermann, A. Müller, D.M. Close, and G.W. Fouse, Radiat. Res.
68, 390-413 (l976).
7. ESR and ENDOR Study of Single
8. ENDOR Study of
the 3αH Radical in Deoxycytidine 5'‑Phosphate
H2O, D.M. Close, G.W.
Fouse, and W.A. Bernhard, J. Chem.
Phys. 66, 4689-4693 (l977).
9. INDO Calculation of Spin Density
Distribution in Pyrimidine Electron Adducts, D.M. Close and W.A. Bernhard, J. Chem. Phys. 66, 5244-5245 (l977).
10. The Alkoxy
Radical RCH2O as a Free Radical Product in X‑Irradiated Single
Crystals of Nucleosides, W.A. Bernhard, D.M. Close, J. Hüttermann, and H. Zehner, J. Chem.
Phys. 67, 1211-1219 (l977).
11. ESR of X‑Irradiated Nucleic Acid Base
Pairs:1‑MethylCytosine 5‑Fluorouracil at
300 K, D.M. Close, R.A. Farley, and W.A. Bernhard, Radiat. Res. 73, 212-220 (l978).
12. ESR and ENDOR Study of 5'‑dCMP at 6
K, D.M. Close and W.A. Bernhard, J.
Chem. Phys. 70, 210-215 (l979).
13. ESR and ENDOR Study of X‑Irradiated
Single Crystals of β‑Alanine at Room
Temperature, D.M. Close, G.W.
Fouse, W.A. Bernhard, and
R.S. Andersen, J. Chem. Phys. 70,
2131-2137 (1979).
14. Alternating Linewidth
Effects in the ESR Spectrum of 5,6‑Dihydro-6‑Methyluracil,
D.M. Close, R.V. Lloyd, and W.A. Bernhard,
J. Chem. Phys. 72, 2203-2205 (l980).
15. Low Temperature Intrinsic Defects in X‑Irradiated Hydroxyapatite
Synthetic Single Crystals, D.M. Close, O.R. Gilliam, and M.M. Mengeot, J. Chem. Phys. 74, 5497-5503
(l981).
16. Low Temperature Thermoluminescent
Behavior of 5'‑dCMP Single Crystals, D.W. Cooke and D.M. Close, J. Chem. Phys. 76, 2174-2178
(1982).
17. An ESR Study of Irradiated 1:1 Co‑Crystals
of 9‑Ethyladenine 5,5'‑Diethyl‑Barbituric Acid (barbital) at
295 K, E. Sagstuen and D.M. Close, J.
Chem. Phys. 79, 117-122 (1983).
18. ESR Study of Irradiated Single Crystals of
the Co‑Crystalline Complex of Cyti-dine:Salicylic Acid, D.M.
Close and E. Sagstuen, J. Chem. Phys.
79, 5292-5300 (1983).
19. Radiation Chemistry of Purines
in the Solid State: ESR and ENDOR Studies of X‑Irradiated Xanthosine Dihydrate Single Crystals, W.H. Nelson and D.M. Close, J. Chem. Phys. 79, 3240-3250
(1983).
20. ESR Study of the Guanine Cation, D.M. Close, E. Sagstuen, and
W.H. Nelson, J. Chem. Phys. 82,
4386-4388 (1985).
21. ESR and ENDOR of Irradiated Solids of
Biological Significance, D.M. Close, Mag. Reson.
Rev. 11, 41-80 (1986).
22. EPR and ENDOR Study of X‑irradiated
Single Crystals of Purines at 4.2 K, D.M. Close, W.
H. Nelson, and E. Sagstuen. Chapter in
the book Electronic Magnetic Resonance of the Solid State, J. Weil, ed.,
Sept., 1987, (p. 237-250).
23. ESR and ENDOR Study of the Guanine Cation: Secondary Product in 5'‑dGMP, E.O. Hole, W.H.
Nelson, D.M. Close, and E. Sagstuen, J.
Chem. Phys. 86, 5218-5219 (1987).
24. Free Radicals Trapped in Methyl α‑D‑Mannopyranoside X‑Irradiated
at 77 K. An ESR/ENDOR Study, W.A. Bernhard, J. Hüttermann, D.M. Close, and K.R.
Mercer, Radiat. Res. 112, 54-61 (1987).
25. Radical Formation in X‑Irradiated
Single
26. ESR/ENDOR Study of Guanosine 5'‑Monophosphate
(Free Acid) Single Crystals X‑Irradiated at 10 K, E. Sagstuen, E.O. Hole,
W.H. Nelson, and D.M. Close, Radiat. Res. 116, 196-209 (1988).
27. Radical Formation in X‑Irradiated
Single
28. ESR and ENDOR of Irradiated Solids of
Biological Significance, D.M. Close, Mag. Reson.
Rev. 14, 1-47 (1988).
29. ESR/ENDOR Study of Guanine:HCl:2H2O X‑Irradiated at 20 K, W.H.
Nelson, E.O. Hole, E. Sagstuen, and D.M. Close,
Int. J. Radiat. Biol. 54, 963-986 (1988).
30. ESR and ENDOR Study of Adenosine Single
31. ESR and ENDOR Studies of X‑Irradiated
Single
32. Free Radical Formation in Single
33. Radiation Chemistry of Adenine Derivatives
Following Direct Ionization in Solids: ESR and ENDOR Investigations, W.H.
Nelson, D.M. Close, E. Sagstuen, and E.O. Hole, Free Rad. Res. Commun. 6, 81-82 (1989).
34. Free Radical Formation in Nucleosides and
Nucleotides of Guanine: ESR and ENDOR
of Guanosine 5'-Monophosphate and Guanosine:Dimethylformamide X-Irradiated at 10 K, E. Sagstuen,
E.O. Hole, W.H. Nelson, and D.M. Close, Free Rad. Res. Commun.
6, 91-92 (1989).
35. Structure of the Primary Reduction Product
of Thymidine after X-Irradiation at 10 K, E.
Sagstuen, E.O. Hole, W.H. Nelson, and D.M. Close, J. Phys. Chem. 93, 5974-5977
(1989).
36. Environmental Effects on Primary Radical
Formation in Guanine: Solid-State ESR and ENDOR of Guanine Hydrobromide
Monohydrate, E.O. Hole, E. Sagstuen, W.H. Nelson, and
D.M. Close. Radiat. Res. 125, 119-128 (1991).
37. Primary and Secondary Radicals in Thymine
Derivatives: Solid State ESR/ENDOR Study of 1-Methylthymine and Thymidine, E.O. Hole, E.
Sagstuen, W.H. Nelson, and D.M. Close, Early
Effects of Radiation on DNA, NATO ASI Series Vol. H 54, pp. 215-230,
Springer Verlag, Heidelberg 1991.
38. The Effects of Environment Upon DNA Free
Radicals, E. Sagstuen, E.O. Hole, W.H. Nelson, and D.M. Close, Early Effects
of Radiation on DNA. NATO ASI Series Vol. H 54, pp.
215-230, Springer Verlag, Heidelberg 1991.
39. Molecular Orbital Calculations on DNA Base
Pairs, D.M. Close, Early Effects of Radiation on DNA. NATO
ASI Series Vol. H 54, pp. 155-156, Springer Verlag,
Heidelberg 1991.
40. Primary Reduction and Oxidation of Thymine
Derivatives. ESR/ ENDOR of Thymidine and 1-Methylthymine X-Irradiated at 10 K, E.O.
Hole, E. Sagstuen, W.H. Nelson, and D.M. Close, J. Phys. Chem. 95,
1494-1503 (1991).
41. ESR and ENDOR of Irradiated Solids of
Biological Interest, D.M. Close, Mag. Reson.
Rev. 15, 240-284
(1991).
42. Free Radical Formation in Single
43. Ab
Initio Molecular Orbital Calculations of DNA Bases and Their Radical Ions
in Various Protonation States: Evidence for Proton
Transfer in GC Base Pair Radical Anions, A.-O. Colson, B. Besler,
D.M. Close, and M.D. Sevilla, J. Phys. Chem. 96, 661-668 (1992).
44. Free Radical Formation in X-Irradiated
Anhydrous
45. Radiation Induced Free Radical Formation in
Thymine Derivatives. EPR/ENDOR of Anhydrous Thymine Single
46. The Structure of the Guanine Cation: ESR/ENDOR
of Cyclic Guanosine Monophosphate
Single Crystals after X-Irradiation at 10 K, E.O. Hole, E. Sagstuen, W.H.
Nelson, and D.M. Close, Radiat. Res. 129, 1-10 (1992).
47. Organic Radicals in Solids, D.M.
Close. Chapter in the book, Electron
Spin Resonance 13A, Specialist Periodical Reports, M.C.R. Symons
ed., Royal Soc. Chem., London. (1992).
48. On the Proton Transfer Behavior of the
Primary Oxidation Product in Irradiated DNA, W.H. Nelson, E. Sagstuen, E.O.
Hole, and D.M. Close, Radiat. Res. 131, 10-17 (1992).
49. Ionization of Adenine Derivatives: EPR and
ENDOR Studies of X-Irradiated Adenine:HCl/2H2O
and Adenine:HCl, W.H.
Nelson,
50. The
51. Radical Ions and Their Reactions in DNA
Constituents. ESR/ENDOR
Studies of Radiation Damage in the Solid-State. D.M. Close. Radiat. Res. 135, 1-15 (1993).
52. ESR and ENDOR Study of Single
53. Solid State Radiation Chemistry of
Co-Crystalline DNA Base Pairs Studied with EPR and ENDOR, W.H. Nelson, S. Nimmala, D.M. Close, E.O. Hole and E. Sagstuen, Radiation Damage in DNA,
Structure/Function Relationships at Early Times, pp. 97-103, A.F. Fuciarelli and J.D. Zimbrick, eds. Battelle Press, Ohio 1995.
54. Protonation/Deprotonation Processes of Primary Products in X-Irradiated
Cytosine Derivatives: EPR and ENDOR Studies at 10 K, E.O. Hole, E. Sagstuen,
D.M. Close and W.H. Nelson, Radiation Damage in DNA, Structure/Function
Relationships at Early Times, pp. 105-110, A.F. Fuciarelli and J.D. Zimbrick,
eds. Battelle Press, Ohio 1995.
55. ESR and ENDOR Studies of X-Irradiated
Single Crystals of Deoxycytidine 5'-Phosphate
Monohydrate (5'dCMP) at 10 K, D.M. Close, W.H. Nelson, E.O. Hole, E. Sagstuen
and W.A. Bernhard, Radiation Damage in DNA, Structure/Function Relationships
at EarlyTimes, pp. 121-127, A.F.
Fuciarelli and J.D. Zimbrick,
eds. Battelle Press, Ohio 1995.
56. Free Radical Formation in Single
57. Radiation Damage to DNA Base Pairs. I.
Electron Paramagnetic Resonance and Electron Nuclear Double Resonance Study of
Single Crystals of the Complex 1-Methylthymine-9-Methyladenine X-Irradiated at
10 K. E. Sagstuen, E.O. Hole, W.H. Nelson, and D.M. Close. Radiat. Res. 146, 425-435 (1996).
58. Where are the Sugar Radicals in Irradiated
DNA? D.M. Close, Radiat. Res. 147, 663-673 (1997).
59. Sugar Radical Conformations in A-DNA, D. M.
Close. Radiat. Res. 148,
512-513, (1997).
60. Electron Spin Resonance and Electron
Nuclear Double Resonance Study of X-Irradiated Deoxyadenosine:
Proton Transfer Behavior of Primary Ionic Radicals, W.H. Nelson, E. Sagstuen,
E.O. Hole and D.M. Close, Radiat. Res. 149, 75-86 (1998).
61. Electron Paramagnetic Resonance and
Electron Nuclear Double Resonance Studies of X-Irradiated
62. Radiation Damage to DNA Base Pairs. II.
Paramagnetic Resonance Studies of 1-Methyl-uracil 9-Ethyladenine Complex
63. EPR and ENDOR Studies of X-Irradiated
Single Crystals of Deoxycytidine 5-Phosphate
Monohydrate at 10 K., D.M. Close, E.O. Hole, W.H. Nelson and E. Sagstuen, J. Phys. Chem.A,
102, 6737-6744 (1998).
64. Comment on Effects of Ionizing Radiation on
Crystalline Cytosine Monohydrates, D.M.
Close, E. Sagstuen, E.O. Hole, and W.H. Nelson,
J. Phys. Chem. B, 103, 3049-3050 (1999).
65. Free Radical Formation in X-Irradiated
Crystals of 2'-Deoxycytidine Hydrochloride. Electron Magnetic Resonance Studies
at 10 K, E.O. Hole, E. Sagstuen, W.H. Nelson, and D.M.
Close, Radiat. Res. 153, 823-834 (2000).
66. Experimental and Theoretical Investigation
of the Mechanism of Radiation-Induced Radical Formation in Hydrogen Bonded Cocrystals of 1-Methylcytosine and 5-Fluorouracil, D.M. Close, L.A. Eriksson, E.O.
Hole, E. Sagstuen, and W.H. Nelson, J. Phys. Chem. B, 104,
9343-9350 (2000).
67. Model Calculations of Radiation Induced
Damage in 1-Methylthymine:9-methyladenine,Y. Chen,
D.M. Close, J. Molec. Struct. (Theochem) 549, 55-61 (2001).
68. Comment on “A Fourier Transform EPR Study of Uracil and Thymine
Radical Anions in Aqueous Solution”, D. M. Close, Phys. Chem. Chem. Phys.
4, 43-44 (2002).
69. Reductive Damage in Directly Ionized DNA:
Saturation of the C5=C6 Bond of Cytosine in d(CGCG)2
Crystals, M.J. Debije, D.M. Close, W.A. Bernhard, Radiat.
Res. 157, 235-242 (2002).
70. Model Calculations of Radiation Induced
Damage in 1-MethylUracil:9-EthylAdenine,Y. Chen, D.M.
Close, Structural Chemistry 13, 203 (2002).
71. Model Calculations of Radiation Induced
Damage in Thymine Derivatives, D.M. Close, G. Forde,
L. Gorb, J. Leszcynski, Structural Chemistry 14, 451 (2003).
72. Model Calculations of Radiation Induced
Damage in DNA Constituents Using Density Functional Theory, D. M. Close,
Chapter 5 in Computational Chemistry, Review of Current Trends, Vol. 8, J. Leszcynski ed., World Scientific, New Jersey, p. 209 (2003).
73. Oxidative Damage to Cytosine: Implications
for the Study of Radiation Induced Damage for
the Study of Radiation-Induced Damage to DNA, D. M. Close, J. Phys. Chem. B, 107, 864 (2003).
74. DNA Damage Dictates the Biological
Consequences of Ionizing Irradiation: the Chemical Pathways, W.A. Bernhard and D.M. Close, Chapter
15 in “Charged Particle and Photon Interactions with Matter: Chemical,
Physicochemical, and Biological Consequences with Applications”, A. Mozumber and Y. Hatano, eds. Marcell Dekker, NY, p.
431-470 (2003).
75. Ab Initio
Ionization Energy Thresholds of DNA and RNA Bases in Gas Phase and in Aqueous Solution,
C.E. Crespo-Hernandez, R. Arce, Y. Ishikawa, L. Gorb,
J. Leszczynski and D.M. Close, J. Phys.
Chem. A, 108, 6373-6377 (2004).
76. Calculation of the Ionization Potentials of
the DNA Bases in Aqueous Medium, D.M. Close, J. Phys. Chem. A, 108,
10376-10379 (2004).
77. The Influence of Microhydration
on the Ionization Energy Thresholds of Uracil and
Thymine. David M. Close, Carlos E. Crespo-Hernandez, L. Gorb, J. Leszczynski
submitted to the J Phys. Chem. A, 109,
9279-9283 (2005).
78. The Influence of Microhydration
on the Ionization Energy Thresholds of Thymine: Comparisions
of Theoretical Calculations with Experimental Values, David M. Close, Carlos E. Crespo-Hernandez, L. Gorb, J.
Leszczynski, J. Phys. Chem. A. 110,
7485-7490 (2006).
79. Electron Transfer in Amino Acid-Nucleic Acid
Base Complexes: EPR, ENDOR
and DFT Study of X-Irradiated N-Formylglycine-Cytosine
Complex Crystals, E. Sagstuen, D.M. Close, R. Vagane, E.O. Hole. J.
Phys. Chem. A 110, 8653-62 (2006).
80. Alkyl Radical Adducts of Aromatic N-Oxides
as Hydrogen-abstracting agents: The Reactivity of Phenazine-N,N’-dioxide-methyl Radical Adduct, Y. Razkazovskiy
and D.M. Close, Res.
Chem. Intermed,
32, 625-635 (2006).
81. On the Determination of Redox
Potentials for the Watson-Crick Base Pairs, DNA Nucleosides, and Relevant
Nucleoside Analogs, Carlos E. Crespo-Hernandez, David M. Close, L. Gorb, J. Leszczynski, J. Phys. Chem. B 111,
5386-5395 (2007)
82. From the Primary Radiation Induced
Radicals in DNA Constituents to Strand Breaks: Low Temperature EPR/ENDOR Studies, D. M. Close. Chapter in the book “Radiation Induced Molecular Phenomena in
Nucleic Acids, J. Leszczynski and M. Shukla, eds, Springer 2008.
83. Theoretical Elucidation of Conflicting
Experimental Data on Vertical Ionization Potentials of Microhydrated
Thymine, D.M.
Close, C. E. Crespo-Hernández, Leonid Gorb, and Jerzy
Leszczynski, Selected as a High Impact Letter to J. Phys. Chem. 2008, 112, 4405-4409.