TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Structure: The distance between adjacent plate-shaped layers is 4-15 Angstrom . The Lewis base is covalently bonded to the boron atom in the cluster in the vertical direction of the plate-shaped layer. Metal atom of group 15 and/or 16 chosen from nitrogen, oxygen, phosphorus and sulfur is covalently bonded to the boron atom. The boron-containing cluster is of formula (I or II). The 6-204C aromatic ring group is of formula (III, IV, V or VI). The building block is of formula (VII or VIII). The plate-shaped layer has a structure of formula (IX or X).Q1-Q5=metal atom of group 15 or 16;R1-R5,D1-D33=H, 1-12C alkyl, 6-12C aryl, or halo;A=group of formula (i);andAA=group of formula (ii).Preferred Method: The organic structure is obtained by reacting a boron-containing compound of formula: Ar1-B(-E1G1)(-E2G2), B(-E3G3)(-E5G5)-Ar2-B(-E4G4)(-E6G6), or Ar3(-B(-E7G7)(-E8G8))(-B(-E9G9)(-E10G10))(-B(-E11G11)(-E12G12)) with a Lewis base in the presence of a solvent, or by reacting the boron-containing compound, poly aromatic alcohol, and Lewis base. The reaction temperature is 40-160 degrees C.Ar1=6-204C (hetero)aryl;Ar2=6-204C (hetero)arylene;Ar3=6-204C (hetero)arene (sic);E1-E12=Q1;andG1-G12=R1.Preferred Compounds: The Lewis base is a heterocyclic compound containing nitrogen, phosphorus, oxygen and/or sulfur, preferably pyridine, 4-cyanopyridine, 4-dialkylaminopyridine, 4,4'-bipyridine, pyrazine, pyridazine, pyrimidine, 2-methylpyrazine, pyrazole, imidazole, purine, 7-azaindole, quinoline, isoquinoline, quinoxaline, 1,4-diazabicyclo(2.2.2)octane, quinuclidine, 1,3,5-triazine, hexamethylenetetramine, piperidine, piperazine, pyrrolidine, morpholine, tetrahydrofuran, 1,4-dioxane, and/or 1,8-naphthylene disulfide. The solvent is mesitylene and/or 1,4-dioxane. The poly aromatic alcohol is benzene diboronic acid, biphenyl-4,4'-diboronic acid, tolane-4,4'-diboronic acid, stilbene-4,4'-diboronic acid, benzene-1,3,5-triboronic acid, benzene-1,3,5-tris(4-phenylboronic acid), 1,4-phenylene diborane diamine, biphenyl-4,4'-diyl diborane diamine, and/or biphenyl-4,4'-diol.