Optical transition and ionicity of C60/amine charge-transfer complexes studied by optical spectroscopy

Absorption Spectroscopic Study of the Complexation of C70 with Aniline and Substituted Anilines

“…The function ψ(D + , A -) differs from ψ(D°, A°) by the promotion of an electron from the donor to the acceptor. λ is given 23,25 by The values of λ (calculated by using eq 8 and given in Table 1) are small and indicate that very little charge transfer occurs in the ground state. The dependence of λ on I D V of the donors is shown in Figure 3.…”

Studies on the weak interactions and CT complex formations between chloranilic acid, 2,3-dichloro-5,6-dicyano-p-benzoquinone, tetracyanoethylene and papaverine in acetonitrile and their thermodynamic properties, theoretically, spectrophotometrically aided by FTIR

“…G 1 was the energy of the ''dative'' structure of the complex corresponding to the complete transfer of one electron from donor to the acceptor. G 1 (e 2 /4pe 0 r = 4.13 eV) was electrostatic energy of attraction between D + and A À taking the typical D-A distance 3.5 A 0 used by various workers in this field [41][42][43][44]. The term C 2 was related to the resonance energy of interaction between no-bond and dative forms in the ground and the excited states and was assumed to be constant for a given donor.…”

“…I D V calculated using the equations given in Table 6 was compared with I V D values obtained theoretically (DFT). Ichida et al [44] utilized I D ad and E A ad whereas Mulliken utilized I D V and E A V in calculating hm CT of the complexes. However, Mulliken's idea was more appropriate as partial charge transfer from HOMO of donor to LUMO of the acceptor rather than total transfer of charge was the reality in case of charge-transfer complexes.…”

Photoluminescence studies on [C60] fullerene solutions in N-methyl-2-pyrrolidinone and pyrrolidine

“…On the other hand, due to its electrophilic character [10,11], C 60 can form in solution charge transfer complexes with a variety of inorganic and organic electron donors. Special attention was paid to the complexes formed with various aliphatic [12] and aromatic amines [13,14]. Moreover, C 60 is able to form molecular complexes not only with well-known electron donors but even with the solvent molecules [15][16][17].…”