In the crystal structure of the title compound, C(23)H(20)NO(2) (+)·CF(3)SO(3) (-), adjacent cations are linked through a network of C-H⋯π and π-π inter-actions, and neighboring cations and anions via C-H⋯O inter-actions. The acridine and benzene ring systems are oriented at a dihedral angle of 31.4 (1)°. The carboxyl group is twisted at an angle of 66.3 (1)° relative to the acridine skeleton. ...

In the crystal structure of the title compound, C(21)H(15)FNO(2) (+)·CF(3)SO(3) (-), the cations form inversion dimers through C-H⋯O, C-F⋯π and π-π inter-actions. These dimers are further linked by π-π inter-actions. The cations and anions are connected through C-H⋯O, C-F⋯π and S-O⋯π inter-actions. The acridine and benzene ring systems are oriented at a dihedral angle of 74.1 (1)°. The carboxyl...

A fast routine method for estimating bacterial cell growth rates by using the metachromatic dye acridine orange is described. The method allows simultaneous estimates of cellular RNA and DNA contents of single cells. Acridine orange staining can be used as a nonspecific supplement to quantitative species-specific hybridizations with fluorescence-labelled ribosomal probes to estimate the single-...

In the crystal of the title compound, C(21)H(15)ClNO(2) (+)·CF(3)SO(3) (-), adjacent cations are linked through C-H⋯π and π-π inter-actions [centroid-centroid distance = 3.987 (2) Å], and neighboring cations and anions via C-H⋯O and C-F⋯π inter-actions. The acridine ring system and benzene ring are oriented at a dihedral angle of 1.0 (1)° while the carboxyl group is twisted at an angle of 85.0 ...

In a great many cases the participation of singlet oxygen in sensitized photooxigenation processes in solution has been stated Singlet oxygen has sometimes also been assumed to be the important intermediate in photodynamic reactions2. Unfortunatly in most instances a direct proof by spectroscopic methods is practically impossible because of its low emission quantum yield in solution. Therefore ...

Fluorescent naphthoxazoles and their boron derivatives have been synthesized and applied as superior and selective probes for endocytic pathway tracking in live cancer cells. The best fluorophores were compared with the commercially available acridine orange (co-staining experiments), showing far better selectivity.

The title compound, C(28)H(28)N(2)O(5), consists of a partially hydrogenated acridine ring system with two substituted phenyl substituents on the dihydro-pyridine ring which are both nearly perpendicular to the mean plane of the acridine unit [dihedral angles of 81.3 (1) and 89.6 (1)° between the central ring of acridine and the methoxyphenyl and nitrophenyl rings, respectively]. The dihydro-py...

In the title complex, [Pd(C(7)H(3)NO(4))(C(13)H(9)N)], the Pd(II) ion is four-coordinated in a distorted square-planar environment by one N and two O atoms from the tridentate pyridine-2,6-dicarboxyl-ate (dipic) anionic ligand and one N atom of the acridine (acr) ligand. The dipic and acr ligands are nearly planar [maximum deviation = 0.069 (3) Å in dipic and 0.091 (4) Å in acr] and the dihedra...

Heavy atoms, such as bromine or iodine, perturb the excited-state properties of aromatic chromophores through a spin-orbital coupling mechanism. In the present work the use of specifically directed spin-orbital probes to study subtle structural relationships in biopolymers is described. Heavy atoms are introduced into defined sites in biochemical systems and the emission spectrum of a ligand or...

with Acridine Orange By DAvID M. JOHNSON, PEYTON T. PIiArr AND PEnnY G. RuGBY I HE IMPORTANCE OF lymphocytic RNA in immune function has received widespread attention in recent years.’ A case in point is the work of Mannick and Egdahl showing that adoptive immunity can be transferred from one animal to another by means of lymphocytic RNA.2 The RNA of the lymphocyte can be evaluated and compared ...