The pH-dependent structure of calf thymus DNA studied by Raman spectroscopy
โ Scribed by T. O'Connor; S. Mansy; M. Bina; D.R. McMillin; M.A. Bruck; R.S. Tobias
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 876 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0301-4622
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## Synopsis We have used Raman scattering to study the water 0-H stretching modes at -3450 and -3220 cm-' in DNA films as a function of relative humidity (r.h.). The intensity of the 3220-cm-' band vanishes 88 the r.h. is decreased from 98% to around 80%, which indicates that the hydrogen-bond net
The excited-state complex (exciplex) formation that results from the photoinduced interaction of water-soluble cationic copper(II) 5,10,15,20-tetrakis[4-(N -methylpyridyl)]porphyrin [Cu(TMpy-P4)] with calf-thymus DNA has been studied in detail by resonance Raman (RR) spectroscopy using both ยพ10 ns a
nl}rit~tz[l~d.filtn.v l? fcull'thjmlts NaDN.4 nith either 3.0 or 5.0 NaCl per ha.sepair were prepared b> dch~dra(ing imsiressed gels. These .filrns ~~erestudied h~Raman und ir .spec[ro.scop~.The 5.0 samples shm,ed verj, strong vibrational mode.q charucteri.y{i('@the B lwg{invnati{m ai relative humid