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937042-85-8

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937042-85-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 937042-85-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,7,0,4 and 2 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 937042-85:
(8*9)+(7*3)+(6*7)+(5*0)+(4*4)+(3*2)+(2*8)+(1*5)=178
178 % 10 = 8
So 937042-85-8 is a valid CAS Registry Number.

937042-85-8Relevant articles and documents

Self-assembly, dynamics, and phase transformation kinetics of donor-acceptor substituted perylene derivatives

Tasios, Nikos,Grigoriadis, Christos,Hansen, Michael Ryan,Wonneberger, Henrike,Li, Chen,Spiess, Hans W.,Muellen, Klaus,Floudas, George

supporting information; experimental part, p. 7478 - 7487 (2010/08/05)

The role of alkyl chain substitution on the phase formation and core dynamics is studied in a series of diphenylamine functionalized perylenemonoimides (PMIs), by X-ray scattering, calorimetry and site-specific solid-state NMR techniques. In addition, the strong dipole associated with the donor-acceptor character of the molecules allow an investigation of the dynamics with dielectric spectroscopy. The self-assembly revealed an ordered phase only in PMIs with branched alkyl chains. This phase comprises a helical stacking of molecules with a molecular twist angle of 60 . Results from solid-state NMR further pointed out the importance of intramolecular hydrogen bonding in stabilizing the intracolumnar packing within the ordered phase. Moreover, the core dynamics are frozen as revealed by the value of the dynamic order parameters and the reduced strength of dipolar relaxation. The kinetics of phase transformation from the isotropic to the ordered phase proceeds via a nucleation and growth mechanism, and the rates are dominated by the nucleation barrier. Within the isotropic phase the core dynamics display strong temperature dependence with rates that depend on the number of methylene units in the alkyl chains.

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