Polymers with Substituted Arylamino Groups

From the structural point of view, poly(N-vinylcarbazole)(PVK) is an example of many photoeonductive polymers which have in common a substituted arylamino group  

Poly(p-diphenylaminostyrene)67 poly(N,N -diphenylaminomethylstyrene)68) and poly(vinyldiphenylarnine)69-71 are the simplest photoeonductive polymers of this class. Similarly, photoeonductive polymers claimed to be useful in electro- 

Poly(N-vinylindole)71,77 and its copolymers78 have been reported as being useful in electrophotography when complexed with 2,4,7-trinitrofluorenone. Similarly, an acrylic polymer with indole groups is known to exhibit photoconductiv- 

The photoconductivity of poly[2-(N-carbazolyl)ethyl vinylether]91,92) and particularly of poly(N-acryloylcarbazole)91) is much inferior to that of PVK. In the case of the acrylic polymer the reported photocurrents are at least two orders of magnitude lower. The poor charge carrier generating efficiency is blamed for low photocurrents91 The relatively poor performance of the vinylether polymer is how ever attributed to charge carrier mobility92). 

Another photoconductive acrylic polymer, poly(N-acryloylaminopropylcarba-zole)93) is claimed to have good flexibility and adhesion properties. 

Poly(p-diphenylaminostyrene) poly(NJ4 -diphenylaminomethylstyrene) and poly(vinyldiphenylamine) are the simplest photoconductive polymers of this class. Similarly, photoconductive polymers claimed to be usehil in electro- 

The following photoconductive polymers can also be clarified as polymers of aromatic amines poly(N-vinylphenothiazine) and poly(N-vinylphenoxazine ° and poly(N-acrylodibenzazepine) ° Poly(N-vinylcarbazole) is basically a modified vinyldiphenylamine polymer . It has yet to be detemined if the transport characteristics of PVK with the diphenyl amino group forced into planarity are different from those of poly(N-vinyldiphenylamine) which would possess a greater freedom of rotation. The properties of PVK have been discussed in many articles and reviews [for example see Ref. ]. Several articles and patents have been published recently which deal with carbazole containing polymers other than PVK, and copolymers of N-vinylcarbazole with some other monomers. 

The first group of these polymers contain structures in which a substituent was placed directly on the carbazyl ring. For example, bromine iodine nitroso benzo and iodobenzo were added to the carbazole at various positions, appar- 

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