Optical centers, interaction with applications

The development of the quantum field theory so far has been cast in a form most directly suited for applications in which the material part of the system comprises only those molecules or optical centers involved in the interactions of interest, with no other matter present. More generally in condensed-phase materials, such centers are surrounded by other atoms or molecules whose electronic properties modify the fields experienced (and produced) by those optical centers. To take account of such influences, we introduce the microscopic displacement electric field d. This arises as a direct consequence of working within the multipolar... 

Among phthalocyanine (Pc) derivatives, the syntheses of lanthanide (III) Pcs (LnPc2) have attracted great attention due to the changing of the electrochemical responses of the complexes with the n-n interaction of the Pc rings of the sandwich complexes [76-80]. Altering the metal center and substituents of these type complexes easily affects their physical, electrical, optical, and electrochemical properties [81-83], thus it is important to determine the electrochemical responses of the newly synthesized complexes to decide their possible application in different... 

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