Solvent effect on photophysical properties of a fluorescence probe: BMVC

Effect of different electronic properties on 9-aryl-substituted BMVC derivatives for new fluorescence probes

“…We considered that the intramolecular charge transfer (ICT) associated with the intramolecular twist of the vinyl group in bridging the donor of carbazole moiety and the acceptor of pyridinium cation is responsible for the distinct fluorescence properties of BMVC. Very similar behavior in fluorescence quantum yield of the BMVC in glycerol and its complexes with DNA suggested that the binding between the BMVC and various DNA could affect the intramolecular twist of the vinyl group and result in the enhancement of the fluorescence yield [5].…”

“…Investigation of BMVC in glycerol/water mixtures suggested that solvent viscosity plays a major role in determining the fluorescence quantum yield [5]. In addition, the study of rigidity suggested that BMVC exhibits a rotation-dependent nonradiative decay.…”

Carbazole tricationic salt: A novel potential two-photon fluorescent DNA probe for nucleic imaging of cells

“…Firstly, dyes that are at a twist intramolecular charge transfer (TICT) state whose non-radiative process quenches the fluorescence will not emit. Inversely, dyes where the formation of a TICT state is restricted become highly luminescent [39][40][41]. For these dyes, the intramolecular charge transfer (ICT) state could occur between the electron donor of a carbazole moiety and the electron acceptor of a pyridinium cation [42,43].…”

A Dual Selective Antitumor Agent and Fluorescence Probe: the Binary BMVC–Porphyrin Photosensitizer

“…In addition, the windows of transparency for porphyrin derivatives in the range of 450-500 nm allow us to selectively excite BMVC. [16] For the study reported herein, we combined these features into a binary porphyrin compound for selectivity in PDT.…”

“…[12] The marked increase in fluorescence quantum yield of BMVC upon binding to DNA is attributed to the intramolecular twist of the vinyl group limited by the binding interaction with DNA. [16] The excellent contrast in cellular imaging of o-2B-P can serve as a marker for the study of PDT.…”