Figure 6

(a–d) The temperature-dependent relative Raman intensity for S-V and S-Z-V-Z, respectively. The Raman intensity of S-V follows the traditional behavior while S-Z-V-Z presents the abnormal variation.
(a–d) The temperature-dependent relative Raman intensity for S-V and S-Z-V-Z, respectively. The Raman intensity of S-V follows the traditional behavior while S-Z-V-Z presents the abnormal variation.