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[求助]
文獻中看到的一個圖,有個地方?jīng)]太懂
The charge transfer can be either thermally or optically induced. It can be described by transitions between, or motions on, free energy surfaces (FESs).23 The free energy of the whole electron donor−acceptor system, including the solvent environment, is given as a function of the reaction coordinate (Figure 2). Following the Franck−Condon principle, electron motion is much faster than nuclear motion.As a consequence, optically induced charge transfer occurs from the minimum of the reactant state generated by an increase in the energy along the vertical direction to the product FESs, whereas thermally induced charge transfer can occur only in the transition-state (TS) region。
這段的翻譯:電荷轉(zhuǎn)移可以是熱或光學誘導。通過在自由能曲面之間或者在其上運動的過渡來描述。包括在溶劑環(huán)境下,整個電子供體受體體系的自由能,給出了反應(yīng)坐標的函數(shù)(圖2)。遵從弗蘭克−康登原則,電子運動比原子運動更快。得出結(jié)果,光誘導電荷轉(zhuǎn)移在能量的加入下,從反應(yīng)態(tài)最小值沿著垂直方向向產(chǎn)物自由能表面移動,而熱誘導電荷轉(zhuǎn)移僅僅發(fā)生在過渡區(qū)域。
我想問的是1.光誘導電荷是垂直方向傳導的,熱誘導為什么就不是呢?熱誘導難道不是通過電子激活傳遞電荷的么?
2.圖中的過渡區(qū)域是那一塊。课覜]看明白,
![文獻中看到的一個圖,有個地方?jīng)]太懂]()
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