2010
DOI: 10.1021/ic100605t
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Photoinduced Electron Transfer in Zn(II)porphyrin−Bridge−Pt(II)acetylide Complexes: Variation in Rate with Anchoring Group and Position of the Bridge

Abstract: The synthesis and photophysical characterization of two sets of zinc porphyrin platinum acetylide complexes are reported. The two sets of molecules differ in the way the bridging phenyl-ethynyl unit is attached to the porphyrin ring. One set is attached via an ethynyl unit on the β position, while the other set is attached via a phenyl unit on the meso position of the porphyrin. These were compared with previously studied complexes where attachment was made via an ethynyl unit on the meso position. Femtosecond… Show more

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Cited by 21 publications
(21 citation statements)
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References 69 publications
(128 reference statements)
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“…All reagents and starting materials were purchased from Aldrich Chemical Co. and were used as received. 3,5‐bis(9‐methoxy‐1,4,7‐trioxanonyl)phenylaldehyde was synthesized using the previously reported procedure . All anhydrous solvents were acquired from Aldrich Chemical Co. and used without further purification.…”
Section: Methodsmentioning
confidence: 99%
“…All reagents and starting materials were purchased from Aldrich Chemical Co. and were used as received. 3,5‐bis(9‐methoxy‐1,4,7‐trioxanonyl)phenylaldehyde was synthesized using the previously reported procedure . All anhydrous solvents were acquired from Aldrich Chemical Co. and used without further purification.…”
Section: Methodsmentioning
confidence: 99%
“…The reduction potential of ZnTPP is -1.7 V vs. Fc/Fc + and the resulting free energy change for an electron transfer from BNAH to 3 ZnTPP * is 0.33 eV. 2 As the driving force for the initial reduction of 3 ZnTPP * by BNAH is more positive than the driving force for the proposed initial reduction of Ru 3 O-pz-Ru 3 O by 3 ZnTPP * , the electron is predicted to be transferred from a neutral porphyrin. The driving force for BNAH to reduce the resulting porphyrin cation is negative, allowing the regeneration of the neutral ZnTPP to be thermodynamically favorable.…”
Section: Alternative Mechanism Of Ru 3 O-pz-ru 3 O Reductionmentioning
confidence: 96%
“…showed that the π‐conjugation in both the meso ‐ and β ‐substituents of Zn porphyrins causes broadening and red shifting of the absorption bands as well as corresponding intensity enhancement with increased π‐conjugation. In 2010, Göransson et al [72] . suggested that the red shift in absorption is more affected by the substituent's extended π‐conjugation, while the broadening of the B‐band is more influenced by the substituent's position.…”
Section: Introductionmentioning
confidence: 99%