Infrared Spectroscopy of Charge Transfer Complexes of Purines and Pyrimidines

Journal Article · Thu Oct 20 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3643633· OSTI ID:21612023

Rathod, Pravinsinh I; Oza, A T ^[1]

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1. Department Of Physics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, 388120 (India)

The FTIR spectra of charge transfer complexes of purines and pyrimidines with organic acceptors such as TCNQ, TCNE, DDQ, chloranil and iodine are obtained and studied in the present work. Adenine, guanine, thymine, cytosine and uracil are the purines and pyrimidines which are found as constituent of DNA and RNA. Charge transfer induced hydrogen bonding is concluded on the basis of indirect transitions observed in the infrared range in these CTCs. Some CTCs show gaussian bands revealing delocalization of charge carriers. The CTCs show interband transition in three-dimensions rather than two-dimensions unlike CTCs of amino acids. There is no extended hydrogen bonded network spanning the whole crystal. This leads to indirect transition due to locally deformed lattice furnishing a phonon-assisted transition.

• OSTI ID: 21612023
• Journal Information: AIP Conference Proceedings, Vol. 1391, Issue 1; Conference: OPTICS 2011: International conference on light - Optics: phenomena, materials, devices, and characterization, Calicut, Kerala (India), 23-25 May 2011; Other Information: DOI: 10.1063/1.3643633; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
ADENINES
AMINO ACIDS
CHARGE CARRIERS
CHARGE EXCHANGE
CHEMICAL BONDS
CHLORANIL
CRYSTALS
CYTOSINE
DNA
ENERGY-LEVEL TRANSITIONS
FOURIER TRANSFORMATION
GUANINE
INFRARED SPECTRA
IODINE
LATTICE VIBRATIONS
RNA
THYMINE
AMINES
ANTIMETABOLITES
AROMATICS
AZAARENES
AZINES
BENZOQUINONES
CARBOXYLIC ACIDS
DRUGS
ELEMENTS
HALOGENS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INTEGRAL TRANSFORMATIONS
NONMETALS
NUCLEIC ACIDS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PURINES
PYRIMIDINES
QUINONES
SPECTRA
SPECTROSCOPY
TRANSFORMATIONS
URACILS