"Pradip Kumar Tapaswi,Myeon-Cheon CHOI,Keuk-Min  JEONG,Shinji ANDO,Chang-Sik HA","Transparent Aromatic Polyimides Derived from Thiophenyl-Substituted Benzidines with High Refractive Index and Small Birefringence",,"Macromolecules","American Chemical Society","Vol. 48","  Issue 11","pp. 3462-3474",2015,June