@article {Guskos20002664,
	title = {Photoacoustic detection of d-d transitions and electronic structure of three polyamine copper complexes},
	journal = {Journal of Physics D: Applied Physics},
	volume = {33},
	number = {20},
	year = {2000},
	note = {cited By 13},
	pages = {2664-2668},
	abstract = {The potential of photoacoustic spectroscopy to resolve the crystal field levels of Cu2+ ions in three polyamine copper complexes, aqua spermine copper sulfate trihydrate [NH2(CH2)3NH(CH2)4NH(CH2)3 NH2{\textperiodcentered}Cu2+{\textperiodcentered}H2O]{\textperiodcentered}SO42-{\textperiodcentered}3H2O, norspermine copper sulfate trihydrate [NH2(CH2)3NH(CH2)3NH(CH2)3 NH2{\textperiodcentered}Cu2+{\textperiodcentered}SO42-]{\textperiodcentered}3H2O, and homospermine copper sulfate dihydrate [NH2(CH2)3 NH(CH2)2NH(CH2)3 NH2{\textperiodcentered}Cu2+{\textperiodcentered}SO42-]{\textperiodcentered}2H2O, has been explored along with UV/VIS and electron paramagnetic resonance (EPR) spectroscopy. Intense absorption is detected in the photoacoustic spectrum corresponding to the d-d transition band weakly traced in the corresponding optical spectrum. The observed fine structure photoacoustic lines are assigned to the individual d-d transitions of Cu2+ ions, which are further exploited to determine the diverse metal-ligand interaction of the studied compound employing simple crystal field analysis.},
	doi = {10.1088/0022-3727/33/20/320},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034295992\&doi=10.1088\%2f0022-3727\%2f33\%2f20\%2f320\&partnerID=40\&md5=9ee45d63d5d4ebedf3318e164d38355d},
	author = {Guskos, N. and Papadopoulos, G. and V. Likodimos and Mair, G.L.R. and Majszczyk, J. and Typek, J. and Wabia, M. and Grech, E. and Dziembowska, T. and Perkowska, T.A.}
}
