| There are numerous methods for the regulation of TiO2 Energy band,but crystal structure modification has unique advantages such as accurate structure information,adjustable size,and multi-element participation.At present,titanium-oxo clusters have made great breakthroughs in cluster nuclei and band regulation,but the successful synthesis of Ti-organic cages is very rare and faces enormous challenges.There are very few examples of exploring host-guest interactions.Thus there is still plenty of room for the development of Ti-organic cages,and at the same time provides new opportunities for studying their structure-property relationships.The work of this thesis mainly includes the following parts:?1?Two titanium-oxo clusters synthesized based on 5-fluorosalicylic acid/salicylic acid ligandsH2[Ti13??3-0?7??2-0?4?Sal-F?9?O'Pr?14]?PTC-95?H2[Ti14??3-0?8??2-O?4?Sal?6?HSal?2?O,Pr?18]·HO1Pr?PTC-96??2?Two titanium-organic cages based on the synthesis of 2,6-dihydroxybenzoic acid ligands{H2[?CH3?2NH2][Ti8L12][?CH3?2NCHO]}2-?PTC-97?{[Ti?H20?6][Ti8L12]-2H?2-?PTC-98??3?Five titanium-oxo clusters synthesized based on p-aminobenzoic acid ligands[Ti4??3-O?2?O3AsR-iPr?2?O'Pr?6?L?2]?PTC-111?[Ti6??3-0?2??2-O?2?O3AsR?2?OiPr?10?L?2]?PTC-1 12-PTC-114?[Ti5??2-0???3-0?2?O3AsR-iPr??O3AsR?2?OiPr?6?L?3]?PTC-115?The structure of the nine titanium-organic cages/clusters was determined by X-ray single crystal diffraction,the structure of all compounds had analyzed and summarized in detail.At the same time,the potential application value of the compounds was explored.It is worth noting that PTC-97 is the first Ti based coordination cube that trap an octahedral[Ti?H2O?6]species to form a host-guest system?PTC-98?;photocatalytic degradation of dyes for PTC-95 and PTC-96 using the control variable method;using p-arsanilic acid as a supporting ligand,the effect of PTCs with the same configuration on the light absorption behavior was explored by introducing different carboxylic acid ligands. |
PDF Full Text Request