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1618679-20-1

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1618679-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1618679-20-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,8,6,7 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1618679-20:
(9*1)+(8*6)+(7*1)+(6*8)+(5*6)+(4*7)+(3*9)+(2*2)+(1*0)=201
201 % 10 = 1
So 1618679-20-1 is a valid CAS Registry Number.

1618679-20-1Downstream Products

1618679-20-1Relevant articles and documents

Bodipy dyes bearing oligo(ethylene glycol) groups on the meso-phenyl ring: Tuneable solid-state photoluminescence and highly efficient OLEDs

Liu, Cui-Lian,Chen, Yong,Shelar, Deepak P.,Li, Cong,Cheng, Gang,Fu, Wen-Fu

, p. 5471 - 5478 (2014/07/08)

Borondipyrromethene (Bodipy) dyes with strong solid-state photoluminescence are highly desirable for their applications in OLEDs. In this work, a series of meso-(4-R-C6H4)-substituted Bodipy dyes (R = H for B1; R = (OCH2CH2)nOCH2CH3, n = 0-3 for B2-B5, respectively) were prepared through an acid-catalyzed reaction. The flexible ether groups attached to the periphery of B2-B5 are expected to influence the molecular arrangement and intermolecular interactions in solid state. Crystallographic analysis of B1-B4 reveals that the meso-phenyl ring is almost orthogonal to the indacene plane. Intermolecular π-π interactions are observed in B1 but absent in B2-B4. As a consequence, the dye B1 is weakly emissive in solid state, while B2-B4 emit strongly in the red region with emission quantum yields of up to 0.33. The PMMA films doped with B2 show two separated emission peaks, and their relative intensity is concentration dependent, leading to the fluorescence color varying from greenish yellow to red as the concentrations successively increased from 5 to 80 wt%. The formation of dimers in the ground state is found to be responsible for the red emission in the condensed state. Efficient OLEDs were fabricated by doping 2 wt% B2-B4 as emitters and gave high luminance, current efficiency, and external quantum efficiency of up to 920 cd m-2, 8.00 cd A-1, and 2.15%, respectively. This journal is the Partner Organisations 2014.

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