Long-lived negative molecular ions of TCNQ formed by the resonant capture of electrons with above zero energies

Laser Spectroscopy and Lifetime Measurements of the S1 State of Tetracyanoquinodimethane (TCNQ) in a Cold Gas‐Phase Free‐Jet

“…Laser spectroscopic study under cold gas‐phase condition is most suited to solving above problems and attaining to a goal for molecular‐level understandings of the photochemistry of TCNQ. However, up to now, none of the gas‐phase spectroscopic study has been done for neutral TCNQ, in contrast to that its radical anion (TCNQ .− ) and dianion (TCNQ 2− ) have been extensively studied . A plausible reason is that TCNQ is nonvolatile with its high melting point of 293.6 °C.…”

Photophysics and Inverted Solvatochromism of 7,7,8,8‐Tetracyanoquinodimethane (TCNQ)

“…TCNQ has been an important molecule in solid‐state chemistry for the synthesis of charge‐transfer (CT) complexes with high electrical conductivity . In direct relation to the properties of CT complexes, there are a number of studies on the electronic states and the structure of the radical anion TCNQ .− by using quantum chemical calculations, vibrational spectroscopy, absorption spectroscopy, and electron spectroscopy . In comparison to the radical anion, the understanding of the electronic state and the photophysics of the neutral TCNQ is still very limited.…”

“…[1,2,6,8] In direct relation to the properties of CT complexes, there are a number of studies on the electronic states and the structure of the radical anion TCNQ * À by using quantum chemical calculations, vibrational spectroscopy, absorption spectroscopy, and electron spectroscopy. [16][17][18][19][20][21][22][23][24][25][26] In comparison to the radical anion, the understanding of the electronic state and the photophysics of the neutral TCNQ is still very limited. Absorption spectra in the gas phase and in a variety of media were reported by Pennelly et al [27] Vibrational normal modes of TCNQ and deuterated TCNQ were studied in the crystal phase with infrared (IR) and Raman spectroscopy.…”

Прохождение Низкоэнергетических Электронов И Плотность Незаполненных Состояний Сверхтонких Слоев TCNQ На Поверхности Окисленного Кремния

“…При использовании этих двух групп методов в комплексе с теоретическими расчетами методом теории функционала плотности (DFT) было показано достаточно хорошее соответствие между максимумами DOUS ряда полупроводниковых органических материалов и энергиями вакантных орбиталей молекул, формирующих исследованный органический материал [17,18]. Ранее методами резонансного захвата электронов нами и другими авторами были исследованы характеристики вакантных электронных состояний молекул TCNQ в диапазоне энергий до нескольких eV выше потенциала ионизации [19,20]. В настоящей статье приведены результаты исследования методом TCS незаполненных электронных состояний зоны проводимости сверхтонких пленок TCNQ, термически осажденных на поверхность окисленного кремния.…”