期刊
JOURNAL OF INORGANIC BIOCHEMISTRY
卷 101, 期 2, 页码 313-320出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jinorgbio.2006.10.008
关键词
nitrosyl ruthenium complexes; nitric oxide; macrocycle; tetraazamacrocycle; photochemistry
Irradiation of trans-[RuCl(cyclam)(NO)](2+), cyclam is 1,4,8,11-tetraazacyclotetradecane, at pHs 1-7.4, with near UV light results in the release of NO and formation of trans-[(RuCl)-Cl-III(OH)(cyclam)](+) with pH dependent quantum yields (from similar to 0.01 to 0.16 mol Einstein(-1)) lower than that for trans-[RuCl([15]aneN(4))(NO)](2+), [15]aneN(4) is 1,4,8,12-tetaazacyclopentadecane, (0.61 mol Einstein(-1)). After irradiation with 355 nm light, the trans-[RuCl([15]aneN(4))(NO)](2+) induces relaxation of the aortic ring, whereas the trans[RuCl(cyclam)(NO)](2+) complex does not. The relaxation observed with trans-[RuCl([15]aneN(4))(NO)](2+) is consistent with a larger quantum yield of release of NO from this complex. (c) 2006 Elsevier Inc. All rights reserved.
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