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Updated: Jun 17, 2026

Nanosponge Tunability in Size and Crosslinking Density
Published on: August 4, 2017
A convenient one-pot nanosynthesis of a C(sp2)-C(sp3)-linked 3D grid via an 'A2 + B3' approach
Ying Wei1, Mengcheng Luo1, Guangwei Zhang1
1Centre for Molecular Systems and Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P.R. China. iamlhxie@njupt.edu.cn iamgwzhang@njupt.edu.cn.
Abstract:
Fluorene-based 3D-grid-FTPA was synthesised with a total yield of 55% via the one-pot formation of six C(sp2)-C(sp3) bonds through a BF3·Et2O-mediated Friedel-Crafts reaction of A2-type bifluorene tertiary alcohol (BIOH) and two B3-type triphenylamines. At the same time, Un-grid-FTPA (2.7%) and 2D-grid-FTPA (5.6%) were obtained as by-products from this synthesis method. In addition, the effect of stereoisomers of BIOH was evaluated to demonstrate that Rac-BIOH is a better A2-type building block to prepare 3D-grid-FTPA in a relatively high yield. Furthermore, 3D-grid-FTPA showed excellent chemical, thermal, and photo-stabilities.
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