ABSTRACT
Spectral properties of new crowned spiropyrans and their cationic complexes are described.
Acknowledgments
This work was partly supported by the RFBR (Projects No. 04-03-32746, No. 02-03-32320); INTAS 2001-0267; ISTC No#2117; The Ministry of Science and Education RF (No. 203.02.05.004) and Government of Moscow grants.