WFRF:(Dongare Prateek)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03346naa a2200325 4500 | |
| 001 | oai:DiVA.org:uu-329668 | |
| 003 | SwePub | |
| 008 | 170920s2017 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3296682 URI |
| 024 | 7 | a https://doi.org/10.1021/acs.jpcc.7b024492 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Dongare, Prateeku Uppsala universitet,Fysikalisk kemi,Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA.4 aut0 (Swepub:uu)prado980 |
| 245 | 1 0 | a Analysis of Hydrogen-Bonding Effects on Excited-State Proton-Coupled Electron Transfer from a Series of Phenols to a Re(I) Polypyridyl Complex |
| 264 | c 2017-06-01 | |
| 264 | 1 | b AMER CHEMICAL SOC,c 2017 |
| 338 | a print2 rdacarrier | |
| 520 | a In the present study of proton-coupled electron transfer (PCET) reactions, the excited-state of a fac-[(CO)(3)Re-I(bpy)(4,4'-bpy)](+) (bpy = 2,2'-bipyridine and 4,4'-bpy = 4,4'-bipyridine) complex was reductively quenched by a series of phenols. A variation of substituents on the phenols substantially alters their pK(a) and E degrees values and provides an opportunity to study photoinduced PCET as a function of their redox properties. Analyses of absorption spectral changes indicate that the phenols form a weak hydrogen bond with the pyridinic nitrogen of the 4,4'-bpy ligand in the ground-state, and ground-state association, constant (K-A) values were determined. This H-bonded adduct quenches the excited Re complex by PCET from the phenol, to form the reduced and,protonated Re complex. The KA values-obtained aid quantitative evaluation of the rate constant for the PCET reaction in the H-bonded, adduct. Thus, photophysical studies and Mechanistic analysis indicate that the reaction occurs via a concerted mechanistic pathway, for the unsubstituted phenol and phenols with electron-withdrawing subtituents. Furthermore; the magnitude of the quenching varies systematically with the proton-coupled potentials of the phenols and not their hydrogen-bonding strength (as reflected in K-A). This study is one of the first detailed analyses of intermolecular H-bonding between a self-assembling metal complex and a series of substituted phenols in an effort to study their relationship with the kinetic parameters in a photoinduced CPET reaction. | |
| 650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
| 700 | 1 | a Bonn, Annabell G.u Uppsala universitet,Fysikalisk kemi,Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA.4 aut0 (Swepub:uu)annbo173 |
| 700 | 1 | a Maji, Somnathu Uppsala universitet,Fysikalisk kemi,Indian Inst Technol, Dept Chem, Hyderabad 502285, Telangana, India.4 aut |
| 700 | 1 | a Hammarström, Leif,d 1964-u Uppsala universitet,Fysikalisk kemi4 aut0 (Swepub:uu)leifhamm |
| 710 | 2 | a Uppsala universitetb Fysikalisk kemi4 org |
| 773 | 0 | t The Journal of Physical Chemistry Cd : AMER CHEMICAL SOCg 121:23, s. 12569-12576q 121:23<12569-12576x 1932-7447x 1932-7455 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-329668 |
| 856 | 4 8 | u https://doi.org/10.1021/acs.jpcc.7b02449 |
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