First of all, let me answer your question about the types of photosensitive polymers. Because the definition of "from the perspective of chemical reaction" is not clear, I list the classification of photosensitive polymer materials, the so-called photosensitive resins, as follows:

1. According to the type of photoreaction, it can be divided into: photo-crosslinking, photo-polymerization, photo-redox, photo-decomposition, photo-dimerization, etc.

2. According to the types of photosensitive groups, they can be divided into diazo type, azide type, cinnamoyl type and acrylate type.

3. According to the change of physical properties, it can be divided into: photo-insolubility, photo-solubility, photo-degradation, etc.

4. According to the types of skeleton polymers, they can be divided into polyvinyl alcohol, polyester, nylon, acrylate, epoxy, polyurethane and so on.

5. According to the polymer composition, it can be divided into: photosensitive compound and polymer mixed type, polymer type with photosensitive group, photopolymer composite type, etc.

6. According to its functions and properties under the action of optical parameters, it can be divided into photosensitive coatings, polymer photoresists, polymer light stabilizers, polymer fluorescent (phosphorescent) materials, polymer photocatalysts, polymer photoconductive materials, photochromic polymer materials, polymer nonlinear optical materials and polymer photodynamic materials.

Secondly, the title, writing suggestions and writing outline of this paper are as follows:

1. Title suggestion: photosensitive polymer materials and their progress (development), research progress (development) of photosensitive polymer materials, etc.

2. Writing suggestion: This paper can be written in the form of a summary, that is, through online inquiry and information retrieval, to summarize the current research and development in this field;

3. Write an outline:

(1) Overview (frontier)-Mainly introduce the definition, origin, development and application of photosensitive polymer materials;

(2) If the focus is on industrialization development, describe the industrialization development in this field according to the reference materials, including: technical varieties, performance, characteristics, price, market, etc. If the research progress is emphasized, this paper mainly introduces the research situation at home and abroad, including: the emergence of new compounds, synthesis techniques and methods, synthesis routes, new properties and characteristics, application prospects, etc.

(3) Conclusion: It is necessary to explain the significance and development prospect of this field.

Almost, one paper is enough. I wish you success! Thank you for giving points!