Stevens, Loah A. published the artcileTemperature-Mediated Polymorphism in Molecular Crystals: The Impact on Crystal Packing and Charge Transport, Computed Properties of 152873-79-5, the publication is Chemistry of Materials (2015), 27(1), 112-118, database is CAplus.
The authors report a novel synthesis to ultra high purity 7,14-bis((trimethylsilyl)ethynyl)dibenzo[b,def]chrysene (TMS-DBC) and the use of this material in the growth of single crystals by solution and vapor deposition techniques. The substrate temperature has a dramatic impact on the crystal growth, producing two distinct polymorphs of TMS-DBC; low temperature (LT) fine red needles and high temperature (HT) large yellow platelets. Single crystal x-ray crystallog. confirms packing structures where the LT crystals form a 1-dimensional slipped-stack structure, while the HT crystals adopt a 2-dimensional brickwork motif. Crystallog. data are given. These polymorphs also represent a rare example where both are extremely stable and do not interconvert to the other crystal structure upon solvent or thermal annealing. Single crystal organic field-effect transistors of the LT and HT crystals show that the HT 2-dimensional brickwork motif produces hole mobilities â?.1 cm2 V-1 s-1, while the mobility of the 1-dimensional structure is significantly lower, at 0.028 cm2 V-1 s-1. Electronic-structure calculations indicate that the superior charge transport in the brickwork polymorph in comparison to the slipped-stack polymorph is due to the presence of an increased dimensionality of the charge migration pathways.
Chemistry of Materials published new progress about 152873-79-5. 152873-79-5 belongs to naphthyridine, auxiliary class Trifluoromethyl,Sulfonate,Benzene, name is 1,5-NAphthalenebis(trifluoromethanesulfonate), and the molecular formula is C5H3F2NO3, Computed Properties of 152873-79-5.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem