نتایج جستجو برای: phenylenes
تعداد نتایج: 58 فیلتر نتایج به سال:
Hoop-shaped ?-conjugated macrocycles constitute a new family of systems displaying unique properties induced by their radially directed ?-orbitals.
We have studied the high-frequency (34 GHz) mobility of positive charge carriers on isolated ladder-type polymer chains in dilute solution. We find that the high-frequency mobility is limited by the chain ends on chains as long as 35 monomers. The intrachain motion of charge carriers can be described by one-dimensional diffusion between infinitely high reflecting barriers, representing the chai...
structural codes vis-a-vis structural counts, like polynomials of a molecular graph, areimportant in computing graph-theoretical descriptors which are commonly known astopological indices. these indices are most important for characterizing carbon nanotubes(cnts). in this paper we have computed sadhana index (sd) for phenylenes and theirhexagonal squeezes using structural codes (counts). sadhan...
Amide-substituted terphenyls adopt a well-defined conformation that allows the transmission of stereochemical information from a controlling centre to a reaction site 11 bond lengths away, providing a model of how extended polymeric systems might be used to communicate binary information.
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