Metal Complexes Micro/Nanostructures:Controllable Construction And Electrochemiluminescent Properties

Electrochemiluminescence?also known as ECL,which is incurred by electricity in some degree?,is a combination of chemical means and chemiluminescence and the application of a certain voltage on the surface of the electrode to produce an electrochemical reaction to form an excited state,and then the excited state of the release of energy to return to the ground state associated with a Luminous phenomenon.And organic semiconductor nanosphere structure has attracted much growing attention due to its excellent electrochemical luminescence properties and potential applications in sensing.In this paper,two organic semiconductor reagents,Ir?piq?₃ and Ir?ppy?₂?acac?,which had typical electrochemical luminescent properties,were selected to form two molecular nanomaterials by the method of reprecipitation and physical vapor deposition respectively.And a study had been conducted on the electrochemical luminescence properties of the two newly-get materials.This paper consisted of two parts:?1?Ir?piq?₃ organic semiconductors were selected as model molecules to prepare Ir?piq?₃ nanowires?namely Ir?piq?₃ NWs?by the method of reprecipitation and then fix the prepared Ir?piq?₃ NWs on the ITO electrode to construct the electrochemical luminescence sensor,and it exhibited good sensitivity and stability when interacting with TprA.Furthermore,the sensor also exhibitted a good electrochemical luminescence response when detecting L-proline and D-proline,and based on the differences of the electrochemical luminescence sensor,chiral amino acids and chiral recognition could also be detected.?2?Organic semiconductors Ir?ppy?₂?acac?were selected as model molecules to prepare Ir?ppy?₂?acac?nanocomposites?namely Ir?ppy?₂?acac?NWs?in green and red respectively by the method of PVD,and both the two kinds of nanomaterials showed good sensitivity and stability after interaction with TprA on the constructed sensor,but the electrochemical luminescence properties of Ir?ppy?₂?acac?nanocomposites in different colors were different.Red Ir?ppy?₂?acac?NWs showed better electrochemical luminescence properties and had a better ECL response.The two sensors constructed by the Red Ir?ppy?₂?acac?NWs and Green Ir?ppy?₂?acac?NWs also exhibitted a good electrochemical luminescence response when detecting L-proline and D-proline,while Red Ir?ppy?₂?acac?NWs has a better ECL response than that of Green Ir?ppy?₂?acac?NWs when detected on chiral amino acids,and based on the differences of the sensors,chiral amino acids and chiral recognition could also be detected.