منابع مشابه
3,9′-Bi(9H-fluorene)
THE TITLE COMPOUND [SYSTEMATIC NAME: 9-(9H-fluoren-3-yl)-9H-fluorene], C(26)H(18), was obtained unintentionally as the product of the synthesis of a compound based on fluorene-thio-phene units. The two fluorene rings are connected through C atoms in the 3- and 9'-positions, and the dihedral angle between the mean planes of the two fluorene units is 78.57 (6)°.
متن کاملNuclear magnetic ordening in fluorene
The present paper considers the possibility to obtain a magnetic ordering of the proton spins in molecular crystals of fluorene using dynamic nuclear polarization (DNP) followed by adibatic demagnetization in the rotating frame (ADRF). It is found that such an ordering is most easily reached for T < 0 and 80 II c-axis. Then a polarization of only 26% needs to be reached by DNP in order to obtai...
متن کاملEthynylene - bridged Porphyrin Fluorene Composites
Porphyrin-fluorene conjugates bridged by ethynylene were synthesized through Pd-catalyzed cross-coupling reaction. These molecules showed strong nonlinear absorption when measured using a nanosecond Z-scan method. The largest effective two-photon absorption cross-section was observed for trisporphyrin as 2.7 × 105 GM at 760 nm, which was 10 times larger than that obtained for monoporphyrin. INT...
متن کامل2,7-Dichloro-4-(chloroacetyl)fluorene
There are two mol-ecules in the asymmetric unit of the title compound, C(15)H(9)Cl(3)O. The fluorene rings of the two mol-ecules are both coplanar within 066 (3) Å. In the crystal, C-H⋯O and C-H⋯Cl hydrogen bonds link the mol-ecules into sheets running parallel to (100).
متن کاملFluorene‐containing tetraphenylethylene molecules as lasing materials
A series of star-shaped oligofluorene molecules, each containing a TPE core, have been specifically designed and produced to show effective aggregation-induced emission (AIE). Each molecule differs either in the number of fluorene units within the arms (e.g., 1 or 4, compounds 4 and 5), or the terminal group positioned at the end of each arm (e.g., H, TMS, or TPA, compounds 4, 6, and 7). Althou...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812024841