A stilbene dendrimer with caltrop-shaped dendrons: synthesis and photophysical studies
作者:Saumitra Sengupta、Sanjukta Muhuri
DOI:10.1016/j.tetlet.2004.02.068
日期:2004.3
A topologically new stilbene dendrimer is prepared using rigid caltrop-shaped dendrons derived from tetraphenylmethane. The dendrimer by virtue of its highly branched periphery, showed a strong emissive property with little excimer formation, even at the first generation.
A tetraphenylmethane based dendritic tolan–anthracene dyad: synthesis and energy transfer propertiesRespectfully dedicated to Professor Goverdhan Mehta on the occasion of his 60th birthday.
作者:Saumitra Sengupta、Pradipta Purkayastha
DOI:10.1039/b209186k
日期:2003.1.13
In order to synthesize a peripherally rigid dendritic donorâacceptor dyad for energy transfer studies, a tritolan dendron based on a tetraphenylmethane scaffold was prepared from New Fuchsin. The dendron showed a small degree of homoconjugation but a large hypochromic effect. Coupling of two such dendrons with an anthracene core led to a dendritic tolanâanthracene dyad whose steady state photophysical studies (UV, PL, PLE) showed vectorial transfer of excitation energy from the surface tolan units to the anthracene core.
Tetraphenylmethane based tectons in dendrimer synthesis: preparation and energy transfer properties of a dendritic stilbene–anthracene dyad
作者:Saumitra Sengupta、Nilasish Pal
DOI:10.1016/s0040-4039(02)00588-9
日期:2002.5
A topologically new stilbene–anthracene dendrimer has been prepared using a highly branched tristilbenyl dendron derived from tetraphenylmethane. Steady-state photophysical studies on this dendrimer showed energy transfer from the peripheral stilbene units to the anthracene core.
Convergent Synthesis of Ferrocene Dendrimers: The Use of Multitopic Dendrons with Disrupted Conjugation
作者:Saumitra Sengupta、Subir Kumar Sadhukhan
DOI:10.1021/om001043r
日期:2001.4.1
Convergentsynthesis of a redox-stable nonaferrocenyl dendrimer using a tritopic dendron with disrupted conjugation is described.
描述了使用具有破坏的缀合的三位树枝状分子聚合合成氧化还原稳定的非二茂铁基树枝状大分子。
Synthetic studies on tetraphenylmethane dendrimers
作者:Saumitra Sengupta、Subir K. Sadhukhan
DOI:10.1016/s0040-4039(99)01945-0
日期:1999.12
A convergent synthesis of a first generation centrally tetrahedral phenyl cinnamate dendrimer and related dendrons using a multifold Heck reaction strategy is described.