Pt polyynes

FIGURE 8. Electronic energy level diagram of Pt polyynes with group 14 and 16 main group elements based on absorption and PL data. Dashed lines represent the levels for P3. The S0 levels are arbitrarily shown to be of equal energy, and all energy values are... 

The photoconductive properties of the fluorene-derived polymers 19, 23, and 24 were studied by the single-layer photocells in the configuration of ITO/Pt polyyne/Al. These polymers show moderate photoconductivity. A PCQE of 0.01 % was estimated in these cases, which does not vary much with variation of the central fluorene ring.26,30 Likewise, polymer 44 was also shown to be a photoconducting material in a similar architecture with a PCQE of 0.01 % in the forward bias mode. 

Detailed studies have been performed on the photophysics of a range of Pt polyynes," " " " " and the... 

Rigid-Rod Transition Metal Acetylide Polymers 1171 Table 5.4 Third-order nonlinear optical coefficients for some Pt-polyynes [84]... 

Cover Picture A depiction of the structure of metallated (Zn) DNA (see Chapter 7, section 7.6) superimposed on a polarizing optical micrograph that shows a lyotropic liquid crystalline meso-phase formed by a Pt polyyne (see Chapter 5, section 5.2.3.2.)... 

Attempts were also made to extend the woik to some robust and stable silylacetylene derivatives functionalized with aromatic entity such as Lj [89], which can then afford new Pt polyynes 4 and oligoynes 5 and 6 [90]. Scheme 3.2 depicts the synthetic routes to these materials. Polymer 4 was prepared as a structural analog to /nms-[-Pt(PBu3)jC = C (p-CgH )C = CPt(PEt3)jC s C(p-C H )C=C-] (VI) in order to evaluate the effect of... 

Generally, we observed that the Pt polyynes gave more efficient phosphorescence than the Pt diynes. But, Op did not vary much with the type of E groups in this study. Comparing (fc )p and (kj, values for the individual metal polyynes and... 

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