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Synthesis and Photoinduced Intramolecular Processes of Light‐Harvesting Silicon Phthalocyanine–Naphthalenediimide–Fullerene Connected Systems by Mohamed E. El‐Khouly; Jung Hoon Kim; Kwang‐Yol Kay; Chan Soo Choi; Osamu Ito; Shunichi Fukuzumi is a Chemistry article available to read on EtoBox.
What is Synthesis and Photoinduced Intramolecular Processes of Light‐Harvesting Silicon Phthalocyanine–Naphthalenediimide–Fullerene Connected Systems about?
## Abstract Fast moving: A new pentad (see figure) composed of silicon phthalocyanine (SiPc), as electron donor, that is connected with two units of naphthalenediimide (NDI) and fullerene C~60~, as electron acceptors, undergoes fast and efficient charge‐separation processes via the NDI and SiPc singlet excited states.magnified image Photoinduced intramolecular processes of a newly synthesized pentad composed of silicon phthalocyanine (SiPc) that is connected with two units of naphthalenediimide (NDI) and fullerene C~60~ to form SiPc‐(NDI)~2~‐(C~60~)~2~ have been studied and the results are compared with the reference compounds, namely, the SiPc‐(NDI)~2~ triad and NDI‐C~60~ dyad. Upon photoexcitation, the main quenching pathway in polar solvents involved electron transfer via the singlet excited states of SiPc‐(NDI)~2~‐(C~60~)~2~ and SiPc‐(NDI)~2~, but not NDI‐C~60~ for which the energy transfer is dominant. The occurrence of electron‐transfer processes of SiPc‐(NDI)~2~‐(C~60~)~2~ and SiPc‐(NDI)~2~ were studied by time‐resolved emission and transient absorption techniques and confirmed by redox measurements and molecular orbital calculations with ab initio B3 LYP/3–21G(\*) methods.
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- Author
- Mohamed E. El‐Khouly; Jung Hoon Kim; Kwang‐Yol Kay; Chan Soo Choi; Osamu Ito; Shunichi Fukuzumi
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0947-6539)
- Published
- 2009
- Language
- EN
- Field
- Chemistry (Physical Sciences)