Abstract, title and references are suitable ● the study target is obvious ● the title "Design, fabrication and optical characterizations of pyrimidine fused quinolone carboxylate moiety for photodiode applications" is is interesting and focused on the study subject ● the included references are necessary, up to date and documented appropriately ● the study covered the appropriate key studies Introduction and background ● what is currently known about this subject Is apparent ● the study problem is definitely defined ● the research problem checked has the known on the subject of the content Methods ● the operations of subject choices is apparent ● the parameters that identified and tested is adequately ● the research strategies are reasonable and trusted ● there are sufficient information in order to replicate the investigation Results ● the statistics is provided in an right manner ● Tables and figures are focused and obviously offered ● All units, rounding, and number of decimals were appropriate and supplied ● Titles, columns, and rows were considered properly and definitely ● Categories were arranged correctly ● the content material in the results improve the data Discussion and Conclusions ● the results outlined from different views and included in content without becoming over understood ● the conclusions clarified the goals of the research ● the conclusions reinforced the results ● the limits of the research are prospects to subject the upcoming analysis. Overall ● the research was pattern right to resolve the objective ● this research contributed to that currently noted on that subject ● there were no major issues of that document ● the document is regular by itself

Overall statement or summary of the article and its findings: A novel amino benzopyrimidoquinoline-5-carboxylate 3, ABPQC, of high purity, was synthesized for the first time. The high quality of ABPQC thin films was prepared for applying the spectrometric measurement results to extract the exclusive optical parameters suitable for optoelectronic device applications

Overall strengths of the article and what impact This work records a lot of statistics on the objective topics, and various interesting points were covered. The authors display various characterization info to assist the demands. The manuscript is well prepared. Following the minor revision, the manuscript will be ready to be accepted for publication in this journal.

Specific comments on weaknesses of the article and what could be done to improve it Major points in the article which needs clarification, refinement, reanalysis, rewrites and/or additional information and suggestions for what could be done to improve the article. 1. The introduction is focusing on organic semiconductors. It is better to focus on quinoline compounds also. 2. what about the material thermal stability? It is better to comments on this point. 3.some figures need to be enhanced and increase their resolution.

Minor points like figures/tables not being mentioned in the text, a missing reference, typos, and other inconsistencies. 1. some superscript and subscript need to be revised. 2. some references need to be updated. 3.some grammatical errors need to be corrected

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