FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2083646585> ?p ?o ?g. }

• W2083646585 endingPage "142" @default.
• W2083646585 startingPage "130" @default.
• W2083646585 abstract "Deprotonation of the photovoltaic dye sensitizers cis-(H2-dcbpy)2RuX2 (L2RuX2) (X= −CN-, −NCS-; H2-dcbpy = L = 2,2‘-bipyridine-4,4‘-dicarboxylic acid) can be achieved in dimethylformamide by reductive electrolysis at platinum electrodes at 20 °C, which allows the thermodynamic and spectral changes associated with deprotonation to be established. The overall reaction that occurs when a potential of −2.0 V vs Fc/Fc+ (Fc = ferrocene) is applied to a platinum electrode can be summarized as (H2-dcbpy)2Ru(NCS)2 + xe- → [(H2-x/2-dcbpyx/2-)2Ru(NCS)2]x- + x/2H2, where x is always slightly less than 4. Thus, under certain experimental conditions, [(H-dcbpy-)2RuX2]2- is believed to be the major product formed by bulk electrolysis, where H-dcbpy- is the singly deprotonated H2-dcbpy ligand. The hydrogen gas formed in this electrochemically induced deprotonation can be generated heterogeneously at the electrode surface or via homogeneous redox reactions between ligand-reduced forms of L2RuX2 and protons or water. Short time domains, reduced temperatures, and glassy carbon electrodes lead to detection of transiently stable ligand-reduced forms of L2RuX2. The reversible half-wave potentials for the ligand-based reduction of electrochemically generated deprotonated L2RuX2 are 0.65 V more negative than their protonated counterparts. In contrast, deprotonation leads to the metal-based oxidation process being shifted by only about 0.3 V. Interestingly, protonated and deprotonated forms of L2RuX2 do not coexist in a facile acid−base equilibrium state on the voltammetric time scale. Data obtained from electrogenerated deprotonated forms of the sensitizers are compared to those found for “salts” used in photovoltaic cells which are prepared by reaction of L2RuX2 with tetrabutylammonium hydroxide. Molecular orbital calculations were employed to provide theoretical insights into the effect of deprotonation on reversible potentials and electronic spectra, and results are in good agreement with experimentally obtained data. Electronic spectra, measured in situ during the course of reduction in a spectroelectrochemical cell, reveal that all bands shift to higher energies and that the absorbance decreases as deprotonation occurs. Implications of the importance of the findings related to reduction potentials and electronic spectra to the operation of photovoltaic cells that utilize deprotonated forms of sensitizers are considered." @default.
• W2083646585 created "2016-06-24" @default.
• W2083646585 creator A5017109393 @default.
• W2083646585 creator A5043214017 @default.
• W2083646585 creator A5043580508 @default.
• W2083646585 creator A5066751558 @default.
• W2083646585 creator A5070036826 @default.
• W2083646585 date "1999-12-21" @default.
• W2083646585 modified "2023-09-24" @default.
• W2083646585 title "Experimental and Theoretical Investigations of the Effect of Deprotonation on Electronic Spectra and Reversible Potentials of Photovoltaic Sensitizers: Deprotonation of <i>cis</i>-L₂RuX₂ (L = 2,2‘-Bipyridine-4,4‘-dicarboxylic Acid; X = CN^-, NCS^-) by Electrochemical Reduction at Platinum Electrodes" @default.
• W2083646585 cites W1966836042 @default.
• W2083646585 cites W1967971004 @default.
• W2083646585 cites W1970393749 @default.
• W2083646585 cites W1972877762 @default.
• W2083646585 cites W1980216394 @default.
• W2083646585 cites W1989158486 @default.
• W2083646585 cites W1992329061 @default.
• W2083646585 cites W1993572775 @default.
• W2083646585 cites W2002058446 @default.
• W2083646585 cites W2013662650 @default.
• W2083646585 cites W2015496655 @default.
• W2083646585 cites W2017200227 @default.
• W2083646585 cites W2019434195 @default.
• W2083646585 cites W2033956181 @default.
• W2083646585 cites W2038624660 @default.
• W2083646585 cites W2038950591 @default.
• W2083646585 cites W2048093472 @default.
• W2083646585 cites W2049843907 @default.
• W2083646585 cites W2062915713 @default.
• W2083646585 cites W2063232545 @default.
• W2083646585 cites W2066516787 @default.
• W2083646585 cites W2075216129 @default.
• W2083646585 cites W2084002459 @default.
• W2083646585 cites W2088975507 @default.
• W2083646585 cites W2121304740 @default.
• W2083646585 cites W2136718998 @default.
• W2083646585 cites W2167558596 @default.
• W2083646585 cites W218339653 @default.
• W2083646585 cites W2329934519 @default.
• W2083646585 cites W2345404805 @default.
• W2083646585 cites W2752234120 @default.
• W2083646585 cites W3025200398 @default.
• W2083646585 cites W4213094364 @default.
• W2083646585 doi "https://doi.org/10.1021/ja992402g" @default.
• W2083646585 hasPublicationYear "1999" @default.
• W2083646585 type Work @default.
• W2083646585 sameAs 2083646585 @default.
• W2083646585 citedByCount "63" @default.
• W2083646585 countsByYear W20836465852012 @default.
• W2083646585 countsByYear W20836465852013 @default.
• W2083646585 countsByYear W20836465852014 @default.
• W2083646585 countsByYear W20836465852015 @default.
• W2083646585 countsByYear W20836465852017 @default.
• W2083646585 countsByYear W20836465852018 @default.
• W2083646585 countsByYear W20836465852020 @default.
• W2083646585 crossrefType "journal-article" @default.
• W2083646585 hasAuthorship W2083646585A5017109393 @default.
• W2083646585 hasAuthorship W2083646585A5043214017 @default.
• W2083646585 hasAuthorship W2083646585A5043580508 @default.
• W2083646585 hasAuthorship W2083646585A5066751558 @default.
• W2083646585 hasAuthorship W2083646585A5070036826 @default.
• W2083646585 hasConcept C116569031 @default.
• W2083646585 hasConcept C118629725 @default.
• W2083646585 hasConcept C145148216 @default.
• W2083646585 hasConcept C147789679 @default.
• W2083646585 hasConcept C161790260 @default.
• W2083646585 hasConcept C170493617 @default.
• W2083646585 hasConcept C17525397 @default.
• W2083646585 hasConcept C178790620 @default.
• W2083646585 hasConcept C179104552 @default.
• W2083646585 hasConcept C185592680 @default.
• W2083646585 hasConcept C2776422427 @default.
• W2083646585 hasConcept C2777869211 @default.
• W2083646585 hasConcept C2778288590 @default.
• W2083646585 hasConcept C30095370 @default.
• W2083646585 hasConcept C518104683 @default.
• W2083646585 hasConcept C52859227 @default.
• W2083646585 hasConcept C55493867 @default.
• W2083646585 hasConcept C75473681 @default.
• W2083646585 hasConceptScore W2083646585C116569031 @default.
• W2083646585 hasConceptScore W2083646585C118629725 @default.
• W2083646585 hasConceptScore W2083646585C145148216 @default.
• W2083646585 hasConceptScore W2083646585C147789679 @default.
• W2083646585 hasConceptScore W2083646585C161790260 @default.
• W2083646585 hasConceptScore W2083646585C170493617 @default.
• W2083646585 hasConceptScore W2083646585C17525397 @default.
• W2083646585 hasConceptScore W2083646585C178790620 @default.
• W2083646585 hasConceptScore W2083646585C179104552 @default.
• W2083646585 hasConceptScore W2083646585C185592680 @default.
• W2083646585 hasConceptScore W2083646585C2776422427 @default.
• W2083646585 hasConceptScore W2083646585C2777869211 @default.
• W2083646585 hasConceptScore W2083646585C2778288590 @default.
• W2083646585 hasConceptScore W2083646585C30095370 @default.
• W2083646585 hasConceptScore W2083646585C518104683 @default.
• W2083646585 hasConceptScore W2083646585C52859227 @default.
• W2083646585 hasConceptScore W2083646585C55493867 @default.
• W2083646585 hasConceptScore W2083646585C75473681 @default.
• W2083646585 hasIssue "1" @default.

• next