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Ryu, Eui-Hyun,Kim, Myung-Yeol,Yoon, You-Jung,Im, Kwang-Hwyi,Jeong, Hae-Mi,Jeon, Hyun,Lee, Hankyul,Kim, Hyungjun TECHNICAL ASSOC OF PHOTOPOLYMERS JAPAN 2016 フォトポリマ-懇話會誌= Journal of photopolymer science and t Vol.29 No.5
<P>Solubility prediction of organic ionic compounds in both aqueous and organic solvents is important for understanding and optimizing lithographic performances. In this study, we proposed computational methods to predict solubility of organic ionic compounds. To compare the predicted solubility with the experimental one, we applied a multiple linear regression model by changing a set of explanatory variables. We conclude that the variables of solvation free energies of cation-anion pair, cation and anion, which are Delta G(AB)degrees, Delta G(A)degrees and Delta G(B)degrees respectively, will be sufficient to describe the relationship between the predicted and experimental solubility values. We expect that the more accurate empirical model for quantitative prediction of solubility of organic ionic compounds by expanding these regression models and further optimizing the parameters based on larger set of experimental values will be reserved.</P>
Li, Yuxiang,Lee, Tack Ho,Kim, Jihyeon,Park, Song Yi,Song, Seyeong,Hwang, Sungu,Kim, Jin Young,Woo, Han Young TECHNICAL ASSOC OF PHOTOPOLYMERS JAPAN 2016 フォトポリマ-懇話會誌= Journal of photopolymer science and t Vol.29 No.4
<P>Two planar type photovoltaic polymers based on naphthobisthiadiazole, poly(2,5-bis(2-hexyldecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho [1,2-c :5,6-c]bis [1,2,5]thiadiazole) (h-PPDTNTz) and poly(2,5-bis(2-decyltetradecyloxy)phenylene-alt-(5,10-dithiophen-2-yl)naphtho [1,2-c:5,6-c]bis[1,2,5]thiadiazole) (d-PPDTNTz) were synthesized by incorporating intrachain noncovalent Coulombic interactions in the molecular design. To achieve a delicate balance of molecular weight, solubility as well as bulk film morphology, hexyldecyloxy (h-) and decyltetradecyloxy (d-) side-chains were substituted, which played a decisive role in modulating morphology, film packing structure and macroscopic device properties. Both polymers showed a broad light absorption up to similar to 800 nm and d-PPDTNTz exhibited a deeper HOMO and preferentially face-on orientation in pristine and blended films with PCIIBM. The detailed optical, electrochemical, thermal, morphological and the resulting photovoltaic characteristics were studied. The best power conversion efficiency of similar to 6.7% was measured for d-PPDTNTz:PC71BM, suggesting that the careful choice of side-chains is necessary for fully optimize the photovoltaic materials and devices.</P>
Ion Exchange of Organic Ionic Compounds in Photoresist
Ryu, Eui-Hyun,Hong, Chang-Young,Jang, Min Kyung,Kim, Myung-Yeol,Kim, Dong Yong,Ahn, Jae Yun,Lim, Hae-Jin,Jeon, Hyun,Clark, Michael,Thackeray, James TECHNICAL ASSOC OF PHOTOPOLYMERS JAPAN 2015 フォトポリマ-懇話會誌= Journal of photopolymer science and t Vol.28 No.5