Organic fluorescent nanofibrils were fabricated from a linear carbazole trimer and employed for expedient detection of nitroaromatic explosives (DNT and TNT) and highly volatile nitroaliphatic explosives (nitromethane).

In the title compound, C(29)H(30)N(2), the dihedral angle between the mean planes of the carbazole and the quinoline systems is 52.41 (6)°. Mol-ecules are linked into dimers by pairs of inter-molecular C-H⋯N hydrogen bonds and into a three-dimensional network by C-H⋯π inter-actions.

5,12-Dihydroindolo[3,2-a]carbazole is a promising scaffold for the design of visible light photoinitiators polymerization due to simultaneous presence two carbazole moieties that can be differently functionalized. Notably, redshift absorption spectra facilely obtained by nitration one carbazoles, second group being functionalized with various groups. Dinitration 5,12-dihydroindolo[3,2-a]carbazo...

In the title compound, C(12)H(7)I(2)N, the tricyclic aromatic ring system is essentially planar, with an r.m.s. deviation of 0.0272 Å. The two I atoms are marginally out of plane, with the C-I bonds angled at 3.9 (2) and 1.1 (2)° with respect to the planes of their respective benzene rings, above and below the plane of the carbazole ring system. No classical hydrogen bonds are observed in the c...