Light‐Harvesting Materials for Organic Electronics

Photoinduced Electron Transfer and Energy Transfer Processes in a Flexible BODIPY-C60 Dyad

“…Purification of the crude product by column chromatography (SiO2, DCM/EP: 3/1) gave 60mg of a red solid in 82% yield. 1 H NMR (300 MHz, CDCl3) δ 0.98 (t, 6H, J = 7.5 Hz, HB), 1.33 (s, 6H, HD), 1.74 (t, 1H, J = 8.5 Hz, HI), 2.30 (q, 4H, J = 7.5 Hz, HC), 2.53 (s, 6H, HA), 2.96 (dt, 2H, J = 8.4Hz, J = 6.4Hz, HH), 4.18 (t, 2H, J = 6.4Hz, HG), 7.01 (d, 2H, J = 8.6Hz, HE or HF), 7.18 (d, 2H, J = 8.5Hz, HE or HF); 19…”

“…Studies on these light-induced processes, and more specifically electron transfer, are of prime importance not only from a fundamental point of view but also for practical applications. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Indeed, conversion of solar light energy into electricity in photovoltaics or to chemical energy (solar fuel) through photocatalytic processes invariably starts with photoinduced electron transfer (PET). 22 Consequently, a huge number of donor-acceptor conjugates have been designed and light-induced electron transfer and/or energy transfer events in solution have been probed.…”

“…The association of a donor and acceptor in dyads (and polyads) has significantly contributed to the development of many light-harvesting materials for organic electronics. − These systems are able to undergo electron transfer and/or energy transfer due to photoexcitation of either the donor or acceptor moiety. Studies on these light-induced processes and, more specifically, electron transfer, are of prime importance not only from a fundamental point of view but also for practical applications. − Indeed, conversion of solar light energy into electricity in photovoltaics or to chemical energy (solar fuel) through photocatalytic processes invariably starts with photoinduced electron transfer (PET) .…”

“…The association of a donor and acceptor in dyads (and polyads) has significantly contributed to the development of many light-harvesting materials for organic electronics. − These systems are able to undergo electron transfer and/or energy transfer due to photoexcitation of either the donor or acceptor moiety. Studies on these light-induced processes and, more specifically, electron transfer, are of prime importance not only from a fundamental point of view but also for practical applications. − Indeed, conversion of solar light energy into electricity in photovoltaics or to chemical energy (solar fuel) through photocatalytic processes invariably starts with photoinduced electron transfer (PET) . Consequently, a huge number of donor–acceptor conjugates have been designed and light-induced electron transfer and/or energy transfer events in solution have been probed. − Among the different acceptors, fullerene C 60 is probably the most attractive one due to its outstanding properties including good electron acceptor capability, a high degree of charge delocalization within the π-extended conjugation, and small reorganization energies in electron transfer processes. , Regarding the chromophores used both as light-harvesters and electron donors, 4,4′-difluoro-4-bora-3a,4a-diaza- s -indacenes (referred to as BODIPYs) have recently gained more attention in the design of donor-C 60 conjugates. − <...…”

“…Studies on these light-induced processes and, more specifically, electron transfer, are of prime importance not only from a fundamental point of view but also for practical applications. − Indeed, conversion of solar light energy into electricity in photovoltaics or to chemical energy (solar fuel) through photocatalytic processes invariably starts with photoinduced electron transfer (PET) . Consequently, a huge number of donor–acceptor conjugates have been designed and light-induced electron transfer and/or energy transfer events in solution have been probed. − Among the different acceptors, fullerene C 60 is probably the most attractive one due to its outstanding properties including good electron acceptor capability, a high degree of charge delocalization within the π-extended conjugation, and small reorganization energies in electron transfer processes. , Regarding the chromophores used both as light-harvesters and electron donors, 4,4′-difluoro-4-bora-3a,4a-diaza- s -indacenes (referred to as BODIPYs) have recently gained more attention in the design of donor-C 60 conjugates. − Indeed, BODIPYs are chemically stable and display remarkable photophysical properties, including high absorption coefficients and emission quantum yields. Another important feature relies on the ease of functionalization of the BODIPY core, allowing to tune its spectral and electrochemical properties .…”