29804
The photovoltaic measurements confirmed that the ortho - octyloxy groups in the two meso - phenyls of and play a significant role in preventing dye aggregation thereby enhancing the corresponding short - circuit current density and open - circuit voltage .
 ortho - octyloxy, meso - phenyls
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ortho - octyloxy, meso - phenyls