In accordance to [10] and Figure 7 (more bright imaging at the end of particles), we could suppose about the increase of the local electromagnetic field at the

edges of the different graphene SCH772984 mw particles. The modes found by using Raman and CARS spectroscopy in different carbon materials are summarized in Tables 2 and 3. Based on the presented data, it could be concluded that the position of the D-mode of the studied materials is close for Raman and CARS spectra; this is in contrary to that of the G-mode, which, in the CARS spectra, is significantly decreased on the background of the new intensive mode (GCARS), depending on the type of the carbon material. Table 2 CARS bands of the different carbon Epacadostat materials Assignment GNP (cm-1) GO (cm-1) MWCNT (cm-1) HOPG (cm-1) D 1,300 1,306 1,310 Not detected New band Not detected 1,419 1,421 Not detected New band 1,500 1,516 1,527 Not detected G 1,555 1,584 1,590 1,587 D′ Not detected Not detected Not measured Not measured 2D (G′) Not detected Not measured Not measured Not measured D + D1 2,460 Not measured Not measured Not measured 2GCARS 2,960 Not measured Not measured Not measured Table 3 Raman bands of the different carbon materials Assignment

GNP (cm-1) GO (cm-1) MWCNT (cm-1) HOPG (cm-1) D-mode 1,307 1,312 1,314 Not detected G-mode 1,582 1,595 1,589 1,580 D′ 1,605 Not detected 1,611 Not detected G′-mode (2D) 2,595 2,616 2,615 2,684 D + D′ (or D + G) 2,902 Not detected Not detected Not detected Raman and CARS spectra of the Thy/GO complex The CARS spectra of Thy and the Thy/GO complex are shown in Figure 8. It is seen that the bands of Thy were shifted from 1,355 and 1,660 cm-1 to 1,365 and 1,670 cm-1 in Thy/GO complex, correspondingly. It could be suggested Liothyronine Sodium that these high-frequency shifts are due to the interaction of Thy with carboxyl and hydroxyl groups of GO [33]. The redistribution of the intensity of the bands and a new mode at 3,065 cm-1 are characteristic of Thy/GO complex.

Taking into account the presence of the wide band at 2,960 cm-1 in the CARS spectrum of GNPs (Figure 6), it could be assumed that the widening of the CARS spectrum of Thy/GO complex is an evidence of the electron-phonon and phonon-phonon resonances [34]. The intensity of the CARS signals of the Thy/GO complex exceeds the CARS signals of Thy at more than 104 times. Figure 8 CARS spectra of Thy/GO (1), Thy (2) and GNPs (3). CARS spectra of Thy/GO (1) and Thy (2) in 1,200 to 1,700 cm-1 (a) and CARS spectra of Thy/GO (1), Thy (2), and GNPs (3) in 2,400 to 3,200 cm-1 (b) ranges. The study of the Thy/GO complex by CARS spectroscopy was carried out in two spectral ranges. Both fingerprint and high-frequency ranges revealed strong bands belonging to Thy.