Honciuc Andrei, Otsuka Akihiro, Wang Yu-Hsiang, McElwee Samuel K, Woski Stephen A, Saito Gunzi, Metzger Robert M
Laboratory for Molecular Electronics, Chemistry Department, University of Alabama, Tuscaloosa, Alabama 35487-0336, USA.
J Phys Chem B. 2006 Aug 10;110(31):15085-93. doi: 10.1021/jp056910q.
A Langmuir-Blodgett (LB) multilayer film of the unimolecular rectifier hexadecyl-gamma-quinolinium-7,7,8-tricyanoquinodimethanide (C(16)H(33)gammaQ-3CNQ) has two distinct polarized charge-transfer bands, one at lower film pressures (28 mN m(-1)) with a peak at 530 nm, due to an intramolecular charge transfer or intervalence transfer (IVT); past the collapse point (32 to 35 mN m(-1)), this band disappears, and a new intermolecular charge-transfer band appears with peak at 570 nm. An LB multilayer film of the tetrafluoro analogue, hexadecyl-gamma-quinolinium-2,3,5,6-tetrafluoro-7,7,8-tricyanoquinodimethanide (C(16)H(33)gammaQ-3CNQF(4)) shows, for all film pressures, only one IVT band with a peak at 504 nm; when sandwiched between gold electrodes, (C(16)H(33)gammaQ-3CNQF(4) is also an LB monolayer electrical rectifier.
单分子整流器十六烷基-γ-喹啉鎓-7,7,8-三氰基对醌二甲烷（C₁₆H₃₃γQ-3CNQ）的朗缪尔-布洛杰特（LB）多层膜有两个不同的极化电荷转移带，一个在较低膜压（28 mN m⁻¹）下，峰值在530 nm处，这是由于分子内电荷转移或价间转移（IVT）；超过塌陷点（32至35 mN m⁻¹），该带消失，出现一个新的分子间电荷转移带，峰值在570 nm处。四氟类似物十六烷基-γ-喹啉鎓-2,3,5,6-四氟-7,7,8-三氰基对醌二甲烷（C₁₆H₃₃γQ-3CNQF₄）的LB多层膜在所有膜压下仅显示一个峰值在504 nm处的IVT带；当夹在金电极之间时，（C₁₆H₃₃γQ-3CNQF₄）也是一种LB单层电整流器。
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