12088
A number of experiments ( SEM , TEM , FTIR spectroscopy , ( 1 ) H NMR spectroscopy , rheological measurements , UV / Vis absorption spectroscopy , CD , and XRD ) revealed that these dendritic molecules self - assembled into elastically interpenetrating one - dimensional nanostructures in organogels .
 ( 1 ) H
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( 1 ) H