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THE CHEMICAL AND PHYSICAL PROPERTIES OF THE REACTION PRODUCT BETWEEN TRIMETHYLAMMONIUM IODIDE AND TCNQ. A TERNARY 1‐D SEMICONDUCTOR WITH “METAL‐LIKE” CONDUCTIVITY *
Author(s) -
Abkowitz M. A.,
Brill J. W.,
Chaikin P. M.,
Epstein A. J.,
Froix M. F.,
Griffiths C. H.,
Gunning W.,
Heeger A. J.,
Little W. A.,
Miller J. S.,
Novatny M.,
Tanner D. B.,
Slade M. L.
Publication year - 1978
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1978.tb39438.x
Subject(s) - library science , research center , national laboratory , engineering physics , engineering , political science , computer science , law
New results on an extensive series of physical and chemical measurements on (NMe3H+)(I3")I/3(TCNQ) are reported. The data, including transverse conductivity and thermoelectric power, reflectivity and X-ray studies, indicate that this system is a semiconductor at high temperatures (>240K) with a strongly temperature depen- dent mobility despite its 'metal-like' conductivity. A semiconductor-semiconductor transition is observed at 150K with a second transition suggested at 89K. The role of large on site coulomb repulsion (U) is indicated. An unusual variation in the degree of disorder among the iodine stacks is reported, with no change observed in the iodine order at the 150K transition.