C
Carlos E. Crespo-Hernández
Researcher at Case Western Reserve University
Publications - 107
Citations - 6526
Carlos E. Crespo-Hernández is an academic researcher from Case Western Reserve University. The author has contributed to research in topics: Population & Excited state. The author has an hindex of 34, co-authored 99 publications receiving 5789 citations. Previous affiliations of Carlos E. Crespo-Hernández include University of Puerto Rico, Río Piedras & Ohio State University.
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Journal ArticleDOI
Ultrafast Excited-State Dynamics in Nucleic Acids
TL;DR: The nature and dynamics of the singlet excited electronic states created in nucleic acids and their constituents by UV light are reviewed, finding that these states are highly stable to photochemical decay, perhaps as a result of selection pressure during a long period of molecular evolution.
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DNA Excited-State Dynamics: From Single Bases to the Double Helix
Chris T. Middleton,Kimberly de La Harpe,Charlene Su,Yu Kay Law,Carlos E. Crespo-Hernández,Bern Kohler +5 more
TL;DR: Recent discoveries and controversies concerning the nature and dynamics of excited states in DNA model systems in solution are reviewed.
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Thymine Dimerization in DNA is an Ultrafast Photoreaction
Wolfgang J. Schreier,Tobias E. Schrader,Florian O. Koller,Peter Gilch,Carlos E. Crespo-Hernández,Vijay N. Swaminathan,Thomas Carell,Wolfgang Zinth,Bern Kohler +8 more
TL;DR: The low quantum yield of this photoreaction is proposed to result from infrequent conformational states in the unexcited polymer, revealing a strong link between conformation before light absorption and photodamage.
Journal ArticleDOI
Base stacking controls excited-state dynamics in A·T DNA
TL;DR: It is shown that vertical base stacking, and not base pairing, determines the fate of excited singlet electronic states in single- and double-stranded oligonucleotides composed of adenine (A) and thymine (T) bases.
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Internal conversion to the electronic ground state occurs via two distinct pathways for pyrimidine bases in aqueous solution.
TL;DR: A surprising bifurcation of the initial excited-state population in <1 ps to two nonradiative decay channels within the manifold of singlet states is revealed, revealing an unprecedented effect of ribosyl substitution on electronic energy relaxation.