Abstract
In this research, 15 new compounds were synthesized by employing organic amine as templates under hydrothermal conditions. They were classified into three groups: Group I : It Five diportanted organic-templated vanadium gallium phosphates are reported here, including one 1D chain structure, one layered structures, and three 3D porous structures. The synthesis conditions, structural chemistry, thermal stabilities, magnetic behavior and electron spin resonance spectra of these Five compounds are discussed therein. Vanadium gallophosphates with various structure reported herein reveal more novel topology in V/Ga/P system. Corellation between thermal stability, magnetism study, and electron spin resonance spectra are discussed, which may bring us to further understand the vanadium gallophosphate system. Part II polyamine molecules with a diethylene triamine moiety, namely NH2(CH2CH2NH)n-1H, n = 3, 4, 5, and 6, are found to be effective templates for the homochiral crystallization of magnesium gallophosphates (MG-N3、MG-N4、MG-N5、MG-N6, MnGaPOs) and zinc gallophosphates (ZG-N3、ZG-N4、ZG-N5、ZG-N6, Zn/GaPOs). For zinc gallophosphates the Zn to Ga ratio of the products is tunable using a reaction mixture of a fixed Zn/Ga/P ratio but with the adjustment of pH around 7 via the addition of various amount polyamine templates. The intrinsic photoluminescence of the four compounds from different templates was studied and the ZG-N3 emitted a broad band centered at 520 nm after excitation at 420 nm with the best quantum yield around 30 %. Part III two novel layer inorganic-organic composite gallophosphate, PG-1 and PG-2 have been synthesized by using achiral H3tepa3+and H3tren3+ as the structure director. The unique structure for PG-1 is built from strictly alternating GaO4N2 octahedra, GaO4 tetrahedra and PO4 tetrahedra through their vertices, forming a neutral layered architecture grafted with tri-protonated tetraethylenepentamine ligands. and charadterized by solid-state NMR spectroscopy. In the three systems, every structure was well-characterized and extended to the discussion on their syntheses, thermal properties, luminescence and the mechanisms of self-assembly of achiral reactants to chiral products. The synthesis conditions and structure information of these compounds make contribution to further research, and also be beneficial to development of novel materials in the future.