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1639839-58-9

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1639839-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1639839-58-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,9,8,3 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1639839-58:
(9*1)+(8*6)+(7*3)+(6*9)+(5*8)+(4*3)+(3*9)+(2*5)+(1*8)=229
229 % 10 = 9
So 1639839-58-9 is a valid CAS Registry Number.

1639839-58-9Downstream Products

1639839-58-9Relevant articles and documents

Design and synthesis of bipyridine platinum(II) bisalkynyl fullerene donor-chromophore-acceptor triads with ultrafast charge separation

Lee, Sai-Ho,Chan, Chris Tsz-Leung,Wong, Keith Man-Chung,Lam, Wai Han,Kwok, Wai-Ming,Yam, Vivian Wing-Wah

, p. 10041 - 10052 (2014)

Donor-chromophore-acceptor triads, (PTZ)2-Pt(bpy)-C60 and (tBuPTZ)2-Pt(bpy)-C60, along with their model compound, (Ph)2-Pt(bpy)-C60, have been synthesized and characterized; their photophysical and electrochemical properties have been studied, and the origin of the absorption and emission properties has been supported by computational studies. The photoinduced electron transfer reactions have been investigated using the femtosecond and nanosecond transient absorption spectroscopy. In dichloromethane, (Ph)2-Pt(bpy)-C 60 shows ultrafast triplet-triplet energy transfer from the 3MLCT/LLCT excited state within 4 ps to give the 3C 60* state, while in (PTZ)2-Pt(bpy)-C60 and (tBuPTZ)2-Pt(bpy)-C60, charge-separated state forms within 400 fs from the 3MLCT/LLCT excited state with efficiency of over 0.90, and the total efficiency with the contribution of 3C60* is estimated to be 0.99. Although the forward electron transfer reactions are very rapid, the charge-separated state recombines to the singlet ground state at a time of hundreds of nanoseconds because of the difference in spin multiplicity between the charge-separated state and the ground state.

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