Abstract A novel conjugated rod–coil diblock copolymer poly(3-hexylthiophene)-block-poly(furfuryl methacrylate) (P3HT-b-PFMA) has been successfully synthesized for the first time using photoinduced organocatalyzed atom transfer radical polymerization (O-ATRP). This process utilized an organic photoredox catalyst of N-aryl phenoxazine, namely 10-(Perylene-3-yl-10H-Phenoxazine, under 365 nm UV irradiation. The diblock copolymer P3HT-b-PFMA was produced efficiently in a controlled manner, resulting in designed average molecular weights and a narrow polydispersity index. Notably, the furfurylmethacrylate (FMA) monomer derived from biomass-based furfuryl compounds was applied for this controlled polymerization, leading to the formation of conjugated diblock copolymers. The synthesized P3HT-b-PFMA was characterized through 1H-NMR, FT-IR, and GPC methods. Furthermore, the optical and hydrophilic-hydrophobic properties of P3HT-b-PFMA were also evaluated through UV-Vis spectroscopy and contact angle measurements. rodcoil rod coil poly3hexylthiopheneblockpolyfurfuryl polyhexylthiopheneblockpolyfurfuryl poly 3 hexylthiophene block methacrylate P3HTbPFMA PHTbPFMA P3HT b PFMA P HT (P3HT-b-PFMA OATRP. OATRP O ATRP . (O-ATRP) Naryl N aryl phenoxazine 10Perylene3yl10HPhenoxazine, 10Perylene3yl10HPhenoxazine PeryleneylHPhenoxazine 10 Perylene yl 10H Phenoxazine, Phenoxazine H 10-(Perylene-3-yl-10H-Phenoxazine 36 irradiation manner index Notably FMA (FMA biomassbased biomass based copolymers 1HNMR, 1HNMR HNMR 1H NMR, NMR 1H-NMR FTIR, FTIR FT IR, IR FT-IR methods Furthermore hydrophilichydrophobic hydrophilic hydrophobic UVVis Vis measurements hexylthiopheneblockpolyfurfuryl HTbPFMA PHT (O-ATRP HPhenoxazine 1

Abstract While numerous phenoxazine-based small molecules developed for organic electronic devices, very limited attention has been received on synthesized conjugated polymers containing this phenoxazine. Herein, we designed and synthesized two new low-bandgap donor−acceptor conjugated copolymers based on phenoxazine with different side chains and diketopyrrolopyrrole by Pd-catalyzed direct (hetero)arylation polycondensation using a Pd(OAc)2 catalyst and PCy3.HBF4 ligand. The effects of side chain branched alkyl and benzoyl of phenoxazine on the thermal, and optical properties of the polymers have been investigated. Both the polymers have a good yield 85%, high molecular weight up to 41500 g/mol, low dispersity index 1.91, excellent solubility in common organic solvents, and a broad absorption spectrum in the range of 500-900 nm with optical bandgaps as low as 1.40 eV. All these polymers possess good thermal stability with decomposition temperatures over 350 oC and no obvious thermal transitions. phenoxazinebased devices Herein lowbandgap bandgap donoracceptor donor acceptor Pdcatalyzed Pd catalyzed heteroarylation hetero arylation PdOAc2 PdOAc OAc 2 Pd(OAc) PCy3HBF4 PCyHBF PCy3 HBF4 PCy HBF PCy3.HBF ligand investigated 85 85% 4150 gmol g mol g/mol 191 1 91 1.91 solvents 500900 500 900 500-90 140 40 1.4 eV 35 transitions Pd(OAc PCy3HBF 8 415 19 9 1.9 50090 50 90 500-9 14 4 1. 3 41 5009 5 500-

Abstract The UV light-mediated metal-free polymerizations of 4-vinylpyridine (4VP) have been successfully performed by using 10-(pyren-1-yl)-10H-phenothiazine (PPTh) and pyrene as photocatalysts. The preparation of narrow polydispersity poly (4-vinyl pyridine) (P4VP) with high conversions was enabled in both protic as well as unprotic reaction media at ambient temperature. Additionally, copolymerizations of 4VP with acrylate and methacrylate monomers were also demonstrated, affording metal-free copolymer products.

Abstract A novel monomer of S-2-mercaptoethyl 2-(thiophen-3-yl)ethanethioate (MTE) were synthesized via esterification reaction between 2-(thiophen-3-yl)acetic and ethane-1,2-dithiol in the presence of dicyclohexyl-carbodiimide (DCC) and N,N’-dimethylpyridin-4-amine (4-DMAP) as catalytic system. The structure of monomer was characterized via MS, 1H-NMR and 13C-NMR spectroscopies. The electrochemical polymerization of MTE monomer was performed in acetonitrile using lithium perchlorate (LiClO4) as electrolyte agent. The obtained polymer film (PMTE) was characterized via cyclic voltammetry and it exhibited the main oxidation peaks centered at +2V.