Intense excimer CPL of pyrenes linked to a quaternaphthyl
作者:Kazuto Takaishi、Ryosuke Takehana、Tadashi Ema
DOI:10.1039/c7cc09187g
日期:——
(R,R,R)-Quaternaphthyl possessing multiple pyrenes emits CPL with high ΦFL and glum values both in solution and in the solid state.
具有多个芘基团的(R,R,R)-四芘基在溶液和固态中发射高ΦFL和glum值的环形偏振荧光。
Synthesis and Photophysical Studies of S-(−)-1,1′-Binaphthol-Based Pyrene-Terminated Dendrimers
作者:Perumal Rajakumar、Kathiresan Visalakshi
DOI:10.1080/00397911.2012.696305
日期:2013.8.18
Pyrene-terminated dendrimers with esters as branching points have been constructed from S-(-)-1,1-binaphthol as the central core unit utilizing carbodiimide coupling. The chiro-optical properties of the dendrimers reveal that the specific rotation decreases from original to first generation. The photophysical properties of the dendrimers synthesized shows monomeric emission. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
Excimer-origin CPL <i>vs.</i> monomer-origin magnetic CPL in photo-excited chiral binaphthyl-ester-pyrenes: critical role of ester direction
Two chiral binaphthyl (BNp) derivatives bearing oppositely oriented ester linkers to two pyrene (Py) moieties [(R)/(S)-1 and (R)/(S)-2] enabled Py-origin circularly polarized luminescence (CPL), magnetic CPL (MCPL), and circulardichroism (CD). (R)-1 that exhibited (−)-sign CD showed (+)-sign Py-excimer CPL but did not exhibit MCPL. Conversely, (R)-2, with (−)-sign CD, did not show excimer-origin CPL