Although TMM has a high magnetic moment (2 µ B ), it does not induce magnetization in 6ZGNRH when it is physisorbed. The chemisorption of TMM results in spin transfer between TMM and 6ZGNRH, which modifies the spin density distribution among the 6ZGNRH resulting in 1.853 µ B net magnetic moment on the 6ZGNRH. While the magnetic moment on TMM reduces to 0.147 µ B in T6ZN-G4 as compared to 2 µ B magnetic moment of isolated TMM. The induced magnetic moment on 6ZGNRH is 0.067 µ B , 0.086 µ B and 0.086 µ B in T6ZN-G1, T6ZN-G2 and T6ZN-G3 respectively. The change in magnetization of TMM and 6ZGNRH after adsorption can be clearly seen from the spin density plot shown in Figure . Further, the spin symmetry of the average edge magnetic moment of the upper and lower edges of 6ZGNRH remains preserved in the physisorption of TMM. The chemisorption of TMM breaks the spin symmetry of the average edge magnetism of 6ZGNRH. The average edge magnetic moments of the upper and lower edges of 6ZGNRH are -0.250 µ B and 0.292 µ B respectively. Thus, the adsorption of TMM radical on ZGNRs can break the spin symmetry of pristine ZGNRs and hence is expected to show spin-filtering effects. Further, we have calculated the spin-resolved transmission spectrum [shown in Fig )] of the TMM adsorbed 6ZGNRH system in four different configurations in order to study the evolution of transmission spectra of 6ZGNRH after adsorption of TMM radical. The transmission spectra of TMM adsorbed 6ZGNRH show a decrease in conductance in the form of transmission dips and spin non-degenerate transmission as compared to the pristine 6ZGNRH. Transmission spectra of T6ZN-G1 do not show significant deviation from pristine 6ZGNRH near the Fermi level but show transmission dip near -3.175 eV and 1.505 eV for spin-down transmission. Similar to T6ZN-G1, T6ZN-G3 does not show prominent transmission dips near the Fermi level, instead, it shows a small decrease in spin-up transmission near -0.565 eV as compared to pristine 6ZGNRH. Also, the spin-down transmission spectra of T6ZN-G3 show transmission dips near -3.115 eV and 1.615 eV . Unlike the T6ZN-G1 and T6ZN-G3, both T6ZN-G2 and T6ZN-G4 show prominent transmission dips near the Fermi level. Transmission dips for T6ZN-G2 are located at -0.625 eV (-3.125 eV and 1.535 eV ) for spin-up (spin-down) transmission spectra. For T6ZN-G4, transmission dips are located at -0.255 eV , and 0.355 eV in spin-up transmission while for spin-down transmission, the transmission dips are located at -0.575 eV and 0.375 eV . Apart from the transmission dips, the spin-down conductance of T6ZN-G4 decreases significantly (less than 0.8 e 2 h ) as compared to the pristine 6ZGNRH which has a conductance plateau height of 2 e 2 h in the energy range (-0.42 eV , -0.30 eV ). Similar transmission dips are observed when a localized state interacts with a continuum of extended states resulting in destructive quantum interference (DQI). To understand the origin of these transmission dips we have analyzed the partial density of states (PDOS) of TMM radical and 6ZGNRH in the junction. The extracted PDOS is shown in Fig ). The PDOS analysis reveals a direct correspondence between the position of PDOS peaks of TMM and the transmission dips. It suggests that states corresponding to the TMM are destructively interfering with the states of 6ZGNRH, which results in transmission dips. It is worth mentioning that the interaction of 6ZGNRH with TMM is configuration dependent. T6ZN-G1 shows a negligibly small effect on transmission spectra of 6ZGNRH near the Fermi level as compared to the other three configurations. This is because in T6ZN-G1, the three -CH 2 groups of TMM are deposited on the hollow site of 6ZGNRH as shown in adsorption does not have a significant effect on the transport properties of 6ZGNRH near the Fermi level in T6ZN-G1 and T6ZN-G3. Apart from that, the MPHS states of T6ZN-G2 (Figure ) reveal that localized TMM states interfere with 6ZGNRH states for spin-up resulting in transmission dips near the Fermi level. While for spin-down, the MPHS state (E = -0.547eV ) shows a contribution from 6ZGNRH only, thus TMM adsorption does not have any effect on spin-down transmission near the Fermi level. Similarly, the MPHS state for T6ZN-G4 at E = -0.250eV for spin-up (see Figure ) is localized on TMM as well as it has a major contribution from 6ZGNRH which is extended throughout the 6ZGNRH, this is why we see a transmission dip (with a transmission probability 1.56 × 10 -4 e 2 h ) in transmission spectra near E = -0.255eV . While for spin-down transmission there are no MPHS states near E = 0.255 eV , which explains the lower conductance observed for spin-down electrons as compared to the spin-up electrons in the energy range (-0.42 eV , -0.30 eV ). Further, a comparison of MPHS states at E = -0.595 eV for spin-down and E = -0.615 eV for spin-up reveals that interference between TMM states and 6ZGNRH states results in the transmission dip near E = -0.575 eV for spin-down transmission in T6ZN-G4 configuration.