.
Complex [Pt(iPr2pipdt)(Quinoxdt)](iPr2pipdt=1,4-diisopropyl-piperazine-2,3-dithione;Quinoxdt=[1,4]dithii-no[2,3-b]quinoxaline-2,3-dithiolate) exhibitsaremarkablegreenemission at 570 nm (roomtemperature),whichisabovethelowestexcitedstate.Thecomplexischaracterizedby negativesolvatochromismas well as ahigh second-orderpolarizability.Additionof AgIionsinduces1) hypsochromicshiftof the lowestfrequenciesand 2) reversible quenchingof luminescence. The corresponding Ni andPd complexeshavealso beenprepared and investigatedto assistinterpre-tationof opticalproperties withinthe triad.Computationalstudies basedon DFT and time-dependent DFT highlighttheelectronicpropertiesof [Pt(iPr2pipdt)(Quinoxdt)].The prefer-entialsite of interaction between the Pt complex and incom-ingAgIisevidencedbytheshapeoftheFukuifunctions,pointingtothe thiolicsulfurandplatinumatomsas themostreactivesitestowardsasoft cation.Calculatedopticalproperties are in agreementwithexperimental findings. Thisstudyshedslighton the structure–property relationship forthis classof compounds.
Uncommon Optical Properties and Silver-responsive Turn-off/on Luminescence in a Pt(II) heteroleptic dithiolene complex / S.S. Attar, F. Artizzu, L. Marchiò, D. Espa, L. Pilia, M.F. Casula, A. Serpe, M. Pizzotti, A. Orbelli Biroli, P. Deplano. - In: CHEMISTRY-A EUROPEAN JOURNAL. - ISSN 0947-6539. - 24:41(2018 Jul 20), pp. 10503-10512.
Uncommon Optical Properties and Silver-responsive Turn-off/on Luminescence in a Pt(II) heteroleptic dithiolene complex
M. PizzottiMembro del Collaboration Group
;A. Orbelli BiroliPenultimo
Membro del Collaboration Group
;
2018
Abstract
Complex [Pt(iPr2pipdt)(Quinoxdt)](iPr2pipdt=1,4-diisopropyl-piperazine-2,3-dithione;Quinoxdt=[1,4]dithii-no[2,3-b]quinoxaline-2,3-dithiolate) exhibitsaremarkablegreenemission at 570 nm (roomtemperature),whichisabovethelowestexcitedstate.Thecomplexischaracterizedby negativesolvatochromismas well as ahigh second-orderpolarizability.Additionof AgIionsinduces1) hypsochromicshiftof the lowestfrequenciesand 2) reversible quenchingof luminescence. The corresponding Ni andPd complexeshavealso beenprepared and investigatedto assistinterpre-tationof opticalproperties withinthe triad.Computationalstudies basedon DFT and time-dependent DFT highlighttheelectronicpropertiesof [Pt(iPr2pipdt)(Quinoxdt)].The prefer-entialsite of interaction between the Pt complex and incom-ingAgIisevidencedbytheshapeoftheFukuifunctions,pointingtothe thiolicsulfurandplatinumatomsas themostreactivesitestowardsasoft cation.Calculatedopticalproperties are in agreementwithexperimental findings. Thisstudyshedslighton the structure–property relationship forthis classof compounds.File | Dimensione | Formato | |
---|---|---|---|
Attar_et_al-2018-Chemistry_-_A_European_Journal.pdf
Open Access dal 07/08/2019
Tipologia:
Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione
1.42 MB
Formato
Adobe PDF
|
1.42 MB | Adobe PDF | Visualizza/Apri |
post_print-1.pdf
accesso aperto
Tipologia:
Pre-print (manoscritto inviato all'editore)
Dimensione
2.22 MB
Formato
Adobe PDF
|
2.22 MB | Adobe PDF | Visualizza/Apri |
Attar_et_al-2018-Chemistry_-_A_European_Journal (1).pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
1.57 MB
Formato
Adobe PDF
|
1.57 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.