Sökning: onr:"swepub:oai:lup.lub.lu.se:eee2c984-85f7-481a-a41e-857188511f70" > Role of Solvent, pH...
Fältnamn | Indikatorer | Metadata |
---|---|---|
000 | 03298naa a2200397 4500 | |
001 | oai:lup.lub.lu.se:eee2c984-85f7-481a-a41e-857188511f70 | |
003 | SwePub | |
008 | 160401s2008 | |||||||||||000 ||eng| | |
024 | 7 | a https://lup.lub.lu.se/record/12714752 URI |
024 | 7 | a https://doi.org/10.1021/ja806345q2 DOI |
040 | a (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Gauden, Magdalenau Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)chem-mgn |
245 | 1 0 | a Role of Solvent, pH, and Molecular Size in Excited-State Deactivation of Key Eumelanin Building Blocks: Implications for Melanin Pigment Photostability. |
264 | c 2008-11-13 | |
264 | 1 | b American Chemical Society (ACS),c 2008 |
520 | a Ultrafast time-resolved fluorescence spectroscopy has been used to investigate the excited-state dynamics of the basic eumelanin building block 5,6-dihydroxyindole-2-carboxylic acid (DHICA), its acetylated, methylated, and carboxylic ester derivatives, and two oligomers, a dimer and a trimer in the O-acetylated forms. The results show that (1) excited-state decays are faster for the trimer relative to the monomer; (2) for parent DHICA, excited-state lifetimes are much shorter in aqueous acidic medium (380 ps) as compared to organic solvent (acetonitrile, 2.6 ns); and (3) variation of fluorescence spectra and excited-state dynamics can be understood as a result of excited-state intramolecular proton transfer (ESIPT). The dependence on the DHICA oligomer size of the excited-state deactivation and its ESIPT mechanism provides important insight into the photostability and the photoprotective function of eumelanin. Mechanistic analogies with the corresponding processes in DNA and other biomolecules are recognized. | |
650 | 7 | a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng |
700 | 1 | a Pezzella, A4 aut |
700 | 1 | a Panzella, L4 aut |
700 | 1 | a Neves-Petersen, M4 aut |
700 | 1 | a Skovsen, E4 aut |
700 | 1 | a Petersen, S4 aut |
700 | 1 | a Mullen, K4 aut |
700 | 1 | a Napolitano, A4 aut |
700 | 1 | a d'Ischia, M4 aut |
700 | 1 | a Sundström, Villyu Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)chph-vs |
710 | 2 | a Kemisk fysikb Enheten för fysikalisk och teoretisk kemi4 org |
773 | 0 | t Journal of the American Chemical Societyd : American Chemical Society (ACS)g 130:50, s. 17038-17043q 130:50<17038-17043x 1520-5126x 0002-7863 |
856 | 4 | u http://dx.doi.org/10.1021/ja806345qy FULLTEXT |
856 | 4 8 | u https://lup.lub.lu.se/record/1271475 |
856 | 4 8 | u https://doi.org/10.1021/ja806345q |
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.