Various dipolar π-delocalized Ru(II) dialkynyl complexes were prepared and characterized. Their second-order nonlinear optical (NLO) properties were investigated by the electric-field-induced second harmonic generation (EFISH) technique working in CH2Cl2 solution with an incident wavelength of 1907 nm, whereas the dipole moments were determined by density functional theory (DFT) calculations. All the investigated complexes are characterized by a negative value of μβ1.907 EFISH, in agreement with a negative value of Δμeg (difference of the dipole moment in the excited and ground state) upon excitation. Their second-order NLO response can be easily modulated by the nature of the alkynyl substituents. Besides, the most promising "push-pull" ruthenium diacetylide complex, adequately functionalized for anchoring to TiO2, was tested as photosensitizer in dye-sensitized solar cells (DSSCs).

Functionalized ruthenium dialkynyl complexes with high second-order nonlinear optical properties and good potential as dye sensitizers for solar cells / F. Nisic, A. Colombo, C. Dragonetti, E. Garoni, D. Marinotto, S. Righetto, F. De Angelis, M.G. Lobello, P. Salvatori, P. Biagini, F. Melchiorre. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 34:1(2015 Jan 12), pp. 94-104. [10.1021/om5009378]

Functionalized ruthenium dialkynyl complexes with high second-order nonlinear optical properties and good potential as dye sensitizers for solar cells

F. Nisic
Primo
;
A. Colombo
Secondo
;
C. Dragonetti;E. Garoni;D. Marinotto;S. Righetto;
2015

Abstract

Various dipolar π-delocalized Ru(II) dialkynyl complexes were prepared and characterized. Their second-order nonlinear optical (NLO) properties were investigated by the electric-field-induced second harmonic generation (EFISH) technique working in CH2Cl2 solution with an incident wavelength of 1907 nm, whereas the dipole moments were determined by density functional theory (DFT) calculations. All the investigated complexes are characterized by a negative value of μβ1.907 EFISH, in agreement with a negative value of Δμeg (difference of the dipole moment in the excited and ground state) upon excitation. Their second-order NLO response can be easily modulated by the nature of the alkynyl substituents. Besides, the most promising "push-pull" ruthenium diacetylide complex, adequately functionalized for anchoring to TiO2, was tested as photosensitizer in dye-sensitized solar cells (DSSCs).
Organic Chemistry; Physical and Theoretical Chemistry; Inorganic Chemistry;
Settore CHIM/03 - Chimica Generale e Inorganica
12-gen-2015
Article (author)
File in questo prodotto:
File Dimensione Formato  
om5009378.pdf

accesso riservato

Tipologia: Publisher's version/PDF
Dimensione 1.65 MB
Formato Adobe PDF
1.65 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Organometallics Manuscript11settembre2014 Milano.pdf

accesso aperto

Tipologia: Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione 661.15 kB
Formato Adobe PDF
661.15 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/360101
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 29
  • ???jsp.display-item.citation.isi??? 26
social impact