Cooperative enhancement of two-photon absorption based on electron coupling in triphenylamine-branching chromophore

Photoinitiators for two-photon polymerisation: effect of branching and viscosity on polymerisation thresholds

“…[1][2][3][4][5] Many two-photon absorbing (2PA) materials have been developed in recent years to maximise 2PA cross-sections (d 2PA ), however oen neglected are key factors that make them more useful for TPP. [6][7][8][9][10] These include the need for low uorescence quantum yields (f F ) and solubility in pre-polymer resins. Consequently, a large d 2PA doesn't necessarily translate into an efficient PI.…”

The photophysics and two-photon absorption of a series of quadrupolar and tribranched molecules: The role of the edge substituent

“…Although, a huge amount of research has been devoted to the design and study of organic materials with enhanced TPA properties, this field remains highly attractive as it is obvious by the large number of recent reports [4][5][6][7][8][9][10][11]. The ultimate goal of the research efforts is to understand how the chemical structure affects the TPA properties and to find chemically stable, inexpensive organic materials with large TPA cross sections, d [12,13].…”

‘Click’ synthesis of starburst triphenylamine as potential emitting material

“…In particular, starburst and dendritic triarylamines have recently received growing attention in organic light-emitting diodes (OLEDs) [2,3], organic field-effect transistors (OFETs) [4], organic photovoltaic devices [5,6] for their excellent hole-transporting capability. Starburst triarylamines are also good candidates for organic non-linear materials [7], fluorescence [8] and phosphorescence [9] materials. With regard to the syntheses of starburst and dendritic triarylamines, the conventional Ullmann reactions and the palladiumcatalyzed coupling reactions were generally adopted.…”