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10.1098/rsta.2014.0327 http://scihub22266oqcxt.onion/10.1098/rsta.2014.0327 C4455724!4455724!25987576     free     free     free Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Philos+Trans+A+Math+Phys+Eng+Sci 2015 ; 373 (2044): ä Nephropedia Template TP {{tp|p=25987576|t=2015. Singlet fission of hot excitons in ?-conjugated polymers |pdf=|usr=}}{{25987576}} gab.com Text Singlet fission of hot excitons in -conjugated polymers JO: Philos Trans A Math Phys Eng Sci http://www.kidney.de/pget.php?&tw=1&pmid=25987576 #FOAvip We used steady-state photoinduced absorption (PA), excitation dependence (EXPA(?)) spectrum of the triplet exciton PA band, and its magneto-PA (MPA(B)) response to investigate singlet fission (SF) of hot excitons into two separated triplet excitons, in two luminescent and non-luminescent ?-conjugated polymers. From the high energy step in the triplet EXPA(?) spectrum of the luminescent polymer poly(dioctyloxy)phenylenevinylene (DOO-PPV) films, we identified a hot-exciton SF (HE-SF) process having threshold energy at E?2ET (=2.8?eV, where ET is the energy of the lowest lying triplet exciton), which is about 0.8?eV above the lowest singlet exciton energy. The HE-SF process was confirmed by the triplet MPA(B) response for excitation at E>2ET, which shows typical SF response. This process is missing in DOO-PPV solution, showing that it is predominantly interchain in nature. By contrast, the triplet EXPA(?) spectrum in the non-luminescent polymer polydiacetylene (PDA) is flat with an onset at E=Eg (?2.25?eV). From this, we infer that intrachain SF that involves a triplet?triplet pair state, also known as the ?dark? 2Ag exciton, dominates the triplet photogeneration in PDA polymer as Eg>2ET. The intrachain SF process was also identified from the MPA(B) response of the triplet PA band in PDA. Our work shows that the SF process in ?-conjugated polymers is a much more general process than thought previously. Twit Text FOAVip Singlet fission of hot excitons in -conjugated polymers ????Philos Trans A Math Phys Eng Sci http://www.kidney.de/pget.php?&tw=1&pmid=25987576 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=25987576 #FOAvip English Wikipedia <ref>{{Cite pmid|25987576}}</ref> Singlet fission of hot excitons in ?-conjugated polymers #MMPMID25987576 Zhai Y; Sheng C; Vardeny ZV Philos Trans A Math Phys Eng Sci 2015[Jun]; 373 (2044): ä PMID25987576show ga We used steady-state photoinduced absorption (PA), excitation dependence (EXPA(?)) spectrum of the triplet exciton PA band, and its magneto-PA (MPA(B)) response to investigate singlet fission (SF) of hot excitons into two separated triplet excitons, in two luminescent and non-luminescent ?-conjugated polymers. From the high energy step in the triplet EXPA(?) spectrum of the luminescent polymer poly(dioctyloxy)phenylenevinylene (DOO-PPV) films, we identified a hot-exciton SF (HE-SF) process having threshold energy at E?2ET (=2.8?eV, where ET is the energy of the lowest lying triplet exciton), which is about 0.8?eV above the lowest singlet exciton energy. The HE-SF process was confirmed by the triplet MPA(B) response for excitation at E>2ET, which shows typical SF response. This process is missing in DOO-PPV solution, showing that it is predominantly interchain in nature. By contrast, the triplet EXPA(?) spectrum in the non-luminescent polymer polydiacetylene (PDA) is flat with an onset at E=Eg (?2.25?eV). From this, we infer that intrachain SF that involves a triplet?triplet pair state, also known as the ?dark? 2Ag exciton, dominates the triplet photogeneration in PDA polymer as Eg>2ET. The intrachain SF process was also identified from the MPA(B) response of the triplet PA band in PDA. Our work shows that the SF process in ?-conjugated polymers is a much more general process than thought previously. äSinglet fission of hot excitons in ?-conjugated polymers (epmc).pdf DeepDyve Pubget Overpricing