The synthesis of 1-H was accomplished by a synthetic route analogous to that used to prepare WNG as shown in Figure . We selected tetrakis(biphenyl-2-yl)corannulene (2) as the precursor of 1-H. Fourfold Suzuki-Miyaura coupling of a regioisomeric mixture of tetraborylcorannulene 3 with 2-bromobiphenyl afforded 2. A Scholl reaction of 2 was brought about by the action of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) and CF3SO3H to generate 1-H as a yellow solid in 56% yield based on 3. The 1 H NMR and 13 C NMR spectroscopic analysis of 1-H suggest a C2-symmetric structure in solution, and high-resolution mass spectra confirm a molecular formula of C68H28 for 1-H. During recrystallization experiments, it was discovered that 1-H works as an efficient organogelator. When a CH2Cl2 solution of 1-H was slowly evaporated over the course of 1 day, an organogel was formed (Figure ). To the best of our knowledge, there is no report of any unfunctionalized aromatic hydrocarbon that works as an organogelator . Intrigued by this unique behavior, we conducted a detailed investigation of the gelating ability of 1-H in various organic solvents (Figure ). Some chloroalkanes and aromatic solvents yield transparent gels at low critical gelation concentrations (CGC; 0.2-0.8 wt%), indicating the high gelation efficiency of 1-H. Slow diffusion of pentane vapor into solutions of 1-H in tetrahydrofuran (THF) and 1,1,2,2-tetrachloroethane (TCE) affords translucent gels with slightly higher CGCs (2.3 and 1.8 wt%, respectively) reflecting the high solubility of 1-H in THF and TCE. In hydrocarbons and polar solvents (triethylamine, acetonitrile, alcohols, dimethyl sulfoxide, and water), no gels are formed. In no case could single crystals of 1-H be obtained. This behavior stands in sharp contrast to the structurally similar derivative 1-Cl, which readily forms single crystals (for details, see Supplementary Materials (SM)). The photophysical properties of 1-H support the existence of intermolecular π-π interactions in the gel state. In solution (CH2Cl2), 1-H shows absorption maxima at 264, 320, 369, 390, and 460 nm and exhibits blue fluorescence, with peaks at 475 and 502 nm and a low fluorescence quantum yield (ΦF = 0.20) upon excitation at 350 nm (Figure ). These results in solution are similar to those obtained for WNG . By contrast, in the gel state, 1-H exhibits yellow fluorescence, with the longest wavelength fluorescence peaks shifted bathochromically to 489 nm and 521 nm (Figure ). These aggregation-dependent changes in the fluorescence spectrum signify strong π-π interactions among the molecules of 1-H in the gel state .