FLUORESCENT PET(PHOTOINDUCED ELECTRON-TRANSFER) SENSORS FOR CALCIUM-IONS - EXTENSION TO MULTIPLE FLUOROPHORES AND VIRTUAL SPACERS

Authors
DESILVA AP GUNARATNE HQN KANE ATM MAGUIRE GEM
Citation
Ap. Desilva et al., FLUORESCENT PET(PHOTOINDUCED ELECTRON-TRANSFER) SENSORS FOR CALCIUM-IONS - EXTENSION TO MULTIPLE FLUOROPHORES AND VIRTUAL SPACERS, Chemistry Letters, (2), 1995, pp. 125-126
Citations number
19
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
2
Year of publication
1995
Pages
125 - 126
Database
ISI
SICI code
0366-7022(1995):2<125:FPESFC>2.0.ZU;2-V
Abstract
New bifluorophoric sensors QCa3 and QCa4 show larger Ca2+-induced fluo rescence enhancements and (for QCa4 only) lower Ca2+ binding constants than their monofluorophoric counterparts due to statistics and remote steric effects respectively. The PET sensor principle is extended to twisted biaryl systems which can give rise to twisted internal charge transfer (TICT) excited states by the re-examination of Tsien's rhod-2 .