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1092939-95-1

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1092939-95-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1092939-95-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,2,9,3 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1092939-95:
(9*1)+(8*0)+(7*9)+(6*2)+(5*9)+(4*3)+(3*9)+(2*9)+(1*5)=191
191 % 10 = 1
So 1092939-95-1 is a valid CAS Registry Number.

1092939-95-1Downstream Products

1092939-95-1Relevant articles and documents

Synthesis of benzo[1,2-b:4,3-b′]dithiophene/triphenylamine copolymers: Effects of substituents on optical and EL properties

Nishide, Yosuke,Osuga, Hideji,Iwata, Kunihiro,Tanaka, Kazuhiko,Sakamoto, Hidefumi

experimental part, p. 1322 - 1330 (2009/04/14)

Benzo[1,2-b:4,3-b′]dithiophene/triphenylamine copolymers P-2eh (with no methyl substituents) and P-Me and P-2Me (with methyl substituents at triphenylamine sites) were synthesized by Stille coupling reactions. In the ground state, the methyl substituents at the ortho positions to the BDT unit on the triphenylamine (TPA) moiety in P-Me and P-2Me caused twisting of the polymer structure and clearly limited conjugation of the polymer backbones. However, in their excited states, all of these copolymers were shown to have planar structures, and almost the same emission maxima were observed. This result indicates that, in the excited states, π-conjugation of the polymer backbone results in the adoption of a more stable planar structure rather than the twisted structure observed in the ground state. The maximum EL efficiencies of devices based on P-Me and P-2Me were about three times higher than that of P-2eh due to restricted π-stacking/aggregation of the conjugated copolymers in the solid state and improvements in thermal and electrochemical stability.

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