Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35822
Title: Synthesis and photoinduced electron transfer in platinum(II) bis(N-(4-ethynylphenyl)carbazole)-bipyridine fullerene complexes
Authors: Lee, SH
Chan, CTL
Wong, KMC
Lam, WH
Kwok, WM 
Yam, VWW
Issue Date: 2014
Publisher: Royal Society of Chemistry
Source: Dalton transactions : the international journal for inorganic, organometallic and bioinorganic chemistry, 2014, v. 43, no. 47, p. 17624-17634 How to cite?
Journal: Dalton transactions : the international journal for inorganic, organometallic and bioinorganic chemistry 
Abstract: Platinum(II) bis(N-(4-ethynylphenyl) carbazole) bipyridine fullerene complexes, (Cbz)(2)-Pt(bpy)-C-60 and (tBuCbz)(2)-Pt(bpy)-C-60, were synthesized. Their photophysical properties were studied by electronic absorption and emission spectroscopy and the origin of the transitions was supported by computational studies. The electrochemical properties were also studied and the free energies for charge-separation and charge-recombination processes were evaluated. The photoinduced electron transfer reactions in the triads were investigated by femtosecond and nanosecond transient absorption spectroscopy. In dichloromethane, both triads undergo ultrafast charge separation from the (MLCT)-M-3/LLCT excited state within 300 fs to yield their respective triplet charge-separated (CS) states, namely (Cbz)(2)(center dot+)-Pt(bpy)-C(60)(center dot_)and ((t)BuCbz)(2)(center dot+)-Pt(bpy) -C-60(center dot_), and the CS states would undergo charge recombination to give the C-3(60)* state, which subsequently decays to the ground state in 22-28 mu s.
URI: http://hdl.handle.net/10397/35822
ISSN: 1477-9226
DOI: 10.1039/c4dt01397b
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