File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Photoinduced electron transfer in a triad that can be assembled/disassembled by two different external inputs. Toward molecular-level electrical extension cables

TitlePhotoinduced electron transfer in a triad that can be assembled/disassembled by two different external inputs. Toward molecular-level electrical extension cables
Authors
Issue Date2002
Citation
Journal of the American Chemical Society, 2002, v. 124, n. 43, p. 12786-12795 How to Cite?
AbstractWe have designed, synthesized, and investigated a self-assembling supramolecular system which mimics, at a molecular level, the function performed by a macroscopic electrical extension cable. The system is made up of three components, 12+, 2-H3+, and 3. Component 12+ consists of two moieties: a [Ru(bpy)3]2+ unit, which plays the role of an electron donor under light excitation, and a DB24C8 crown ether, which fulfills the function of a socket. The wire-type component 2-H3+ is also composed of two moieties, a secondary dialkylammonium-ion center and a bipyridinium unit, which thread into the DB24C8 crown ether socket of 12+ and the 1/5DN38C10 crown-ether socket 3, respectively. The photochemical, photophysical, and electrochemical properties of the three separated components, of the 12+ ⊃ 2-H3+ and 2-H3+ ⊂ 3 dyads, and of the 12+ ⊃ 2-H3+ ⊂ 3 triad have been investigated in CH2Cl2 solution containing 2% MeCN. Reversible connection/disconnection of the two plug/socket systems can be controlled independently by acid/base and redox stimulation. The behavior of the various different dyads and triad has been monitored by light absorption and emission spectroscopies, as well as by electrochemical techniques. In the fully connected 12+ ⊃ 2-H3+ ⊂ 3 triad, light excitation of the [Ru(bpy)3]2+ unit of component 12+ is followed by electron transfer (k = 2.8 x 108 s-1) to the bipyridinium unit of component 2-H3+, which is plugged into component 3. Possible schemes to obtain improved molecular-level electrical extension cables are discussed.
Persistent Identifierhttp://hdl.handle.net/10722/332525
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBallardini, Roberto-
dc.contributor.authorBalzani, Vincenzo-
dc.contributor.authorClemente-León, Miguel-
dc.contributor.authorCredi, Alberto-
dc.contributor.authorTeresa Gandolfi, Maria-
dc.contributor.authorIshow, Eléna-
dc.contributor.authorPerkins, Julie-
dc.contributor.authorFraser Stoddart, J.-
dc.contributor.authorTseng, Hsian Rong-
dc.contributor.authorWenger, Sabine-
dc.date.accessioned2023-10-06T05:12:11Z-
dc.date.available2023-10-06T05:12:11Z-
dc.date.issued2002-
dc.identifier.citationJournal of the American Chemical Society, 2002, v. 124, n. 43, p. 12786-12795-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/332525-
dc.description.abstractWe have designed, synthesized, and investigated a self-assembling supramolecular system which mimics, at a molecular level, the function performed by a macroscopic electrical extension cable. The system is made up of three components, 12+, 2-H3+, and 3. Component 12+ consists of two moieties: a [Ru(bpy)3]2+ unit, which plays the role of an electron donor under light excitation, and a DB24C8 crown ether, which fulfills the function of a socket. The wire-type component 2-H3+ is also composed of two moieties, a secondary dialkylammonium-ion center and a bipyridinium unit, which thread into the DB24C8 crown ether socket of 12+ and the 1/5DN38C10 crown-ether socket 3, respectively. The photochemical, photophysical, and electrochemical properties of the three separated components, of the 12+ ⊃ 2-H3+ and 2-H3+ ⊂ 3 dyads, and of the 12+ ⊃ 2-H3+ ⊂ 3 triad have been investigated in CH2Cl2 solution containing 2% MeCN. Reversible connection/disconnection of the two plug/socket systems can be controlled independently by acid/base and redox stimulation. The behavior of the various different dyads and triad has been monitored by light absorption and emission spectroscopies, as well as by electrochemical techniques. In the fully connected 12+ ⊃ 2-H3+ ⊂ 3 triad, light excitation of the [Ru(bpy)3]2+ unit of component 12+ is followed by electron transfer (k = 2.8 x 108 s-1) to the bipyridinium unit of component 2-H3+, which is plugged into component 3. Possible schemes to obtain improved molecular-level electrical extension cables are discussed.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titlePhotoinduced electron transfer in a triad that can be assembled/disassembled by two different external inputs. Toward molecular-level electrical extension cables-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ja025813x-
dc.identifier.pmid12392425-
dc.identifier.scopuseid_2-s2.0-0037202162-
dc.identifier.volume124-
dc.identifier.issue43-
dc.identifier.spage12786-
dc.identifier.epage12795-
dc.identifier.isiWOS:000178792400035-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats