02096nas a2200169   4500008004100000022001400041245010800055210006900163260000800232300001400240490000700254520146800261100002301729700002101752700002101773856013201794       2024                        eng d  a1144-054600aSolvatochromism and side chain effects on the morphological behavior of bodipy-alt-i-Indigo copolymers 0 aSolvatochromism and side chain effects on the morphological beha  cAPR  a6954-69640 v483 a<p>
	Among the factors that govern the self-assembly of a molecular system, side chains and solvent polarity play crucial roles in the morphological alteration of small molecules in solutions. Although the effect of side chains on the self-assembly of small molecules has been studied well, reports on their importance in the aggregation behavior of polymers are limited. Investigating whether a minor change in the side chain produce any significant impact on the morphology of the polymer in solution is of great research interest. Towards the end goal, to alter the morphology of polymers and to know the impact of the side chains on the self-assembly properties of the conjugated polymers, two BODIPY-i-Indigo alternating copolymers, P1 [poly(BDP12-alt-iI)] and P2 [poly(BDPE-alt-iI)], were synthesized, and their aggregation behavior was explored in various solvents. Both the copolymers, P1 and P2, exhibited narrow PDI values of 1.16 and 1.45, respectively. Although their cores are the same, P1 showed a thin film morphology, while P2 displayed a porous morphology (approximately 557 nm) in chloroform. On changing the solvent, P1 showed a porous morphology in a 50% THF-CHCl3 mixture. However, in P2, the pores were reduced to extremely small sizes in the 50% THF-CHCl3 mixture. This work demonstrates that even a minimal change in the side chains of copolymers and polarity differences between solvents can produce a drastic morphological effect.</p>
1 aSingh, Anup, Kumar1 aSwain, Gitanjali1 aBirajdar, Sarika  uhttps://library.ncl.res.in/content/solvatochromism-and-side-chain-effects-morphological-behavior-bodipy-alt-i-indigo-copolymers