Jerome H. Perlstein

Analysis of photogeneration in a doped polymer system in terms of a kinetic model for electric‐field‐assisted dissociation of charge‐transfer states

The photogeneration process in a 40:60 triphenylamine/Lexan system doped with a boron diketonate acceptor has been analyzed in terms of a kinetic model for field‐assisted dissociation of charge carriers. The best fit of theory to experimental data is obtained if one assumes a Gaussian distribution of charge‐transfer radii. A short‐range mobility in triphenylamine/Lexan of order 10−2 cm2/V s is predicted assuming a purely coulombic electron‐pair interaction. For the system studied, the most probable charge‐transfer radius is 0.54 nm with a quantum yield for charge‐transfer states of 0.93. The present model also predicts temperature‐dependent quantum efficiencies for the doped system more accurately than does Onsager’s 1938 theory of geminate recombination.

Conducting salts of (telluropyranyl)telluropyrans

Abstract Conducting complexes of (telluropyranyl)telluropyran donors with tetracyanoquinodimethane (TCNQ) and the closed-shell anions tetrafluoroborate and perchlorate were prepared.

The properties of tetraphenyldithiapyranylidene triiodides: Two new organic conductors

Abstract The electrical conductivity and thermoelectric power of two forms (tetragonal and orthorhombic) of the new organic conductor (tetraphenyldithiapyranilidene) (triiodide) [φ4DTP)(I-3)] have been measured. The tetragonal form φ4DTP(I-3)0.76 has a single-crystal conductivity of 120 Ω-1cm-1 at 295 K. A phase transition is observed in the tetragonal form at 165 K. The orthorhombic form φ4DTP(I-3)1.06 has a single-crystal conductivity of 2 Ω-1cm-1 at 295 K.

Effects of oxygen on the magnetic susceptibility of TCNQ salts

Abstract The effects of oxygen on the static magnetic susceptibility of two TCNQ salts, TTF-TCNQ and tetraphenyldithiapyranylidene (φ 4 DTP)-TCNQ, were measured. Differences in the temperature dependence of the magnetic susceptibility measured for TTF-TCNQ and φ 4 DTP-TCNQ indicate that the phenomenon is more complicated than oxygen condensation.

Magnetic susceptibility of the one‐dimensional electron gas; application to BDP(TCNQ)2

The magnetic susceptibility of the noninteracting electron gas has been studied on the basis of free electrons and the tight‐binding model, with application to the properties of organic conducting materials. Theoretical curves of susceptibility versus temperature are presented. The gradual transition from low temperature Pauli paramagnetism to the high temperature Curie law region is shown. In the transition region, the one‐dimensional systems show a peak in the susceptibility of the order of 110% of the low temperature limit. The magnetic susceptibility of the compound BDP(TCNQ)2 is interpreted in terms of a one‐dimensional tight‐binding model with an energy bandwidth of 0.07 eV.