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Park, Hea Jung,So, Monica C.,Gosztola, David,Wiederrecht, Gary P.,Emery, Jonathan D.,Martinson, Alex B. F.,Er, Sux308,leyman,Wilmer, Christopher E.,Vermeulen, Nicolaas A.,Aspuru-Guzik, Alax301,n,S American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.38
<P>We demonstrate that thin films of metal organic framework (MOF)-like materials, containing two perylenedlimides (PDICl4, PDIOPh2) and a squaraine dye (S1); can be fabricated by, layer-by-layer assembly (LbL). Interestingly, these LbL films absorb across the visible light region (400-750 nm) and facilitate directional energy transfer. Due to the high spectral overlap and oriented transition dipole moments of the donor (PDICl4 and PDIOPh2) and acceptor (S1) components, directional long-range energy transfer from the bluest to reddest absorber was successfully demonstrated in the multicomponent MOF-like films. These findings have significant implications for the development of solar energy conversion devices based on MOFs.</P>
Microstructure and Tensile Properties of Tungsten Heavy Alloys
Islam S.H.,Qu X.H.,Akhtar F.,Feng P.Z.,Hea X.B. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
The main object of this research was to examine the effect of sintering conditions on the microstructure of tungsten heavy alloys and how the resulting modification of the microstructure can be used to optimize their mechanical properties. Alloys composed of 88%, 93% and 95% wt. of tungsten and the balance is Ni: Fe in the ratio of 7:3 were sintered at different temperatures for different sintering holding times in hydrogen atmosphere. It was shown that the mechanical properties of the alloys, and especially their ductility, are harmed when tungsten grains are contiguous.