Liu, Jian published the artcileAmphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectrics, Category: thiazole, the publication is Advanced Materials (Weinheim, Germany) (2021), 33(4), 2006694, database is CAplus and MEDLINE.
There is no mol. strategy for selectively increasing the Seebeck coefficient without reducing the elec. conductivity for organic thermoelecs. Here, it is reported that the use of amphipathic side chains in an n-type donor-acceptor copolymer can selectively increase the Seebeck coefficient and thus increase the power factor by a factor of ≈5. The amphipathic side chain contains an alkyl chain segment as a spacer between the polymer backbone and an ethylene glycol type chain segment. The use of this alkyl spacer does not only reduce the energetic disorder in the conjugated polymer film but can also properly control the dopant sites away from the backbone, which minimizes the adverse influence of counterions. As confirmed by kinetic Monte Carlo simulations with the host-dopant distance as the only variable, a reduced Coulombic interaction resulting from a larger host-dopant distance contributes to a higher Seebeck coefficient for a given elec. conductivity Finally, an optimized power factor of 18 μW m-1 K-2 is achieved in the doped polymer film. This work provides a facile mol. strategy for selectively improving the Seebeck coefficient and opens up a new route for optimizing the dopant location toward realizing better n-type polymeric thermoelecs.
Advanced Materials (Weinheim, Germany) published new progress about 2215018-37-2. 2215018-37-2 belongs to thiazole, auxiliary class Thiazoles, name is 4,4′-Bis(octyloxy)-2,2′-bis(trimethylstannyl)-5,5′-bithiazole, and the molecular formula is C28H52N2O2S2Sn2, Category: thiazole.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica