Photo-luminescent properties 2-phenylsuccinate complex 1 2-phenylsuccinic acid 1 Benzene 1 Bis((imidazol-1-yl)methyl)benzene complex 1 Bis((imidazole-1-yl)methyl)benzene complex 1 Butyric acid 1 C 60 1 C60 1 Charge transfer 1 Charge transfer state 1 Chlorine compounds 1 Coordination Polymers 1 Coordination polymer 1 Coordination reactions 1 Coordination-polymers 1 Donor-acceptor complex 1 Electron acceptor materials 1 Emission spectroscopy 1 Fullerene derivative 1 Fullerenes 1 Imidazol 1 Liquefied gases 1 Metal ions 1 Metals 1 Methyl esters 1 Molecular compositions 1 Nanocomposites 1 Organic solar cells 1 Organic solvents 1