000184536 001__ 184536
000184536 005__ 20181203023020.0
000184536 0247_ $$2doi$$a10.1021/ja303682m
000184536 022__ $$a0002-7863
000184536 02470 $$2ISI$$a000306724500008
000184536 037__ $$aARTICLE
000184536 245__ $$aLong-Lived Charge-Separated States in Ligand-Stabilized Silver Clusters
000184536 260__ $$bAmerican Chemical Society$$c2012$$aWashington
000184536 269__ $$a2012
000184536 300__ $$a4
000184536 336__ $$aJournal Articles
000184536 520__ $$aRecently developed synthesis methods allow for the production of atomically monodisperse clusters of silver atoms stabilized in solution by aromatic thiol ligands, which exhibit intense absorption peaks throughout the visible and near-IR spectral regions. Here we investigated the time-dependent optical properties of these clusters. We observed two kinetic processes following ultrafast laser excitation of any of the absorption peaks: a rapid decay, with a time constant of 1 ps or less, and a slow decay, with a time constant that can be longer than 300 ns. Both time constants decrease as the polarity of the solvent increases, indicating that the two processes correspond to the formation and recombination, respectively, of a charge-separated state. The long lifetime of this state and the broad optical absorption spectrum mean that the ligand-stabilized silver clusters are promising materials for solar energy harvesting.
000184536 700__ $$uArgonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA$$aPelton, Matthew
000184536 700__ $$0244839$$g206081$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland$$aTang, Yun
000184536 700__ $$aBakr, Osman M.
000184536 700__ $$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland$$aStellacci, Francesco$$g196998$$0244724
000184536 773__ $$j134$$tJournal Of The American Chemical Society$$k29$$q11856-11859
000184536 909C0 $$xU12173$$0252323$$pSUNMIL
000184536 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:184536
000184536 917Z8 $$x196998
000184536 937__ $$aEPFL-ARTICLE-184536
000184536 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000184536 980__ $$aARTICLE