01241nas a2200181 4500008004100000022001400041245009900055210006900154260000800223300001400231490000700245520058200252100002300834700002000857700002400877700003200901856012600933 2022 eng d a1359-734500aTailoring diradicaloid properties of expanded isophlorinoids with systematic core-modification0 aTailoring diradicaloid properties of expanded isophlorinoids wit cAUG a8946-89490 v583 a

Herein, we describe the synthesis, structural diversity and diradicaloid characteristics of 38 pi core-modified aromatic expanded isophlorins with eight heterocyclic rings. The diradicaloid character of expanded isophlorinoid macrocycles was engineered by systematic structural modification. Depending on the nature of the link between the heteroatoms, they adopt planar and non-planar conformations. This large structural variation with a significant difference in the extent of aromaticity is correlated with the magnitude of their respective diradical character.

1 aAmbhore, Madan, D.1 aShukla, Pragati1 aGonnade, Rajesh, G.1 aAnand, Venkataramanarao, G. uhttps://library.ncl.res.in/content/tailoring-diradicaloid-properties-expanded-isophlorinoids-systematic-core-modification01458nas a2200253 4500008004100000022001400041245013900055210006900194260000800263300001400271490000700285520055800292100002400850700002800874700001900902700002000921700002300941700002200964700002300986700003001009700002101039700001801060856012601078 2025 eng d a1359-734500aMultifunctional luminogens with synergy of aggregation-induced delayed fluorescence, two-photon absorption and photocurrent generation0 aMultifunctional luminogens with synergy of aggregationinduced de cJAN a1447-14500 v613 a

In this study, we investigated the aggregation-induced delayed fluorescence (AIDF) properties of three luminogens - TN, TA, and TP. Our comprehensive theoretical analysis reveals a significant reduction in the Delta EST in their aggregated or solid-state, activating TADF, on a similar to mu s time-scale. Additionally, these luminogens demonstrate two-photon excited anti-Stokes photoluminescence emission and improved photocurrent generation, attributed to their strong charge transfer characteristics and longer singlet exciton lifetimes.

1 aChatterjee, Abhijit1 aNarayanan, Sundaravalli1 aThorat, Sachin1 aMalik, Ajay, J.1 aAmbhore, Madan, D.1 aNarayanan, Aswini1 aSihag, Anil, Kumar1 aBabu, Sukumaran, Santhosh1 aLahiri, Mayurika1 aHazra, Partha uhttps://library.ncl.res.in/content/multifunctional-luminogens-synergy-aggregation-induced-delayed-fluorescence-two-photon