Photosensitive polymers, applications

Nowadays, polymeric photoconductors may be used in electrophotography, microfilms, photothermoplastic recording, spatial light modulators, and nonlinear elements. The combination of photosensitivity with high quality electrical and mechanical properties permits the use of such materials in optoelectronics, holography, laser recording and information processes. The applications of the various types of polymers were reported in the final parts of the relevant items in the earlier sections. Here, we will briefly analyze the common features of photoconductive polymer applications. The separate questions of each type have been dealt with in some books and papers [3, 11, 14, 329]. 

The diverse properties of organic molecular materials, of which the polymers are amongst the primary ones, will, without doubt, be intensively developed in the future. Photosensitive polymer semiconductors with pre-given properties and a broad spectrum of application will be created for various optoelectronic devices. 

Some new electronic applications of polyimide-siloxane adhesives have been already partially reviewed. In addition, the development of photo-crosslinkable copolymers has been of great interest for the development of components of electronic devices [126]. The general field of photosensitive polymers was reviewed by Horie and Hamishita in 1995 [127]. A number of papers have investi-... 

Major polymer applications aerospace, electronics (mostly films and coatings), photosensitive materials for positive imaging, solar cells, hollow fiber membranes, composites. unclear power plants, space shuttle, microprocessor chip carriers, structural adhesives... 

Macdonald and C.G. Willson, Poly(N alkysl o nitroamides) A new class of thermally stable photosensitive polymers, in Polymer Materials for Electronic Applications, ACS Symposium Series 184, E.D. Feit and C. Wilkins, Jr., Eds., American Chemical Society, Washington, D.C., pp. 73 82 (1982). A. Reiser, Photoreactive Polymers The Science and Technology of Resists, p. 267, John Wiley Sons, Hoboken, NJ (1989). 

The chemistry of the photoactive diazosulfonate group (-Nr-S03 ) and its applications in polymer chemistry have been reviewed by Nuyken and Voit in an article which also contains some experimental details. Polymer applications include photoresins, test stripes for assays of phenolic compounds, and photo-labile surfactants. Novel polyesters with photosensitive backbones based on the... 

S.l. Flong, S.Y. Joo, D.W. Kang, Photosensitive Polymers, in R. Arshady (ed.). Desk Reference of Functional Polymers Synthesis and Applications, American Chemical Society, Washington, D.C. (1997), p. 293. 

Highly aromatic and photosensitive polymers such as polyimides are potential candidates in photonic applications. Wholly aromatic polyimides (XXXV) were observed to be white in color and soluble in polar aprotic solvents such as DMAc, DMF, HMPA, and NMP, whereas the polymers with m-phenylene units in backbone were also soluble in common organic solvents such as acetone, chloroform, and THE All the materials showed excellent thermal stability up to 300° C in air without any weight loss, although initial weight losses of 5 and 10% were observed in the temperature ranges of 362-372° C and 376-384° C, respectively [350]. 

The synthetic nucleic acid analogs have recently much attention, and numerous studies have been devoted to the preparation and the properties of these analogs, which may find a number of application possibilities as polymeric drugs, photosensitive polymers, and other valuable materials. The present paper concerns the preparation of the HPLC resins containing nucleic acid derivatives which can be applied to HPLC systems using specific interaction between nucleic acid bases. 

Photosensitive polymers, in Desk R rence of Functional Polymers Synthesis and Applications (ed. R. Arshady),... 

Laser ablation of polymer films has been extensively investigated, both for application to their surface modification and thin-film deposition and for elucidation of the mechanism [15]. Dopant-induced laser ablation of polymer films has also been investigated [16]. In this technique ablation is induced by excitation not of the target polymer film itself but of a small amount of the photosensitizer doped in the polymer film. When dye molecules are doped site-selectively into the nanoscale microdomain structures of diblock copolymer films, dopant-induced laser ablation is expected to create a change in the morphology of nanoscale structures on the polymer surface. 

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