“…[2][3][4][5][6][7][8][9] Motivated by the discovery of carbon nanotubes and fullerenes, scientists have devoted many efforts in exploiting nanomaterials with a hollow interior, for example hollow polyhedra and spheres, tubes, open cages, and frames, which has become an intriguing research topic over the past two decades. [44,45] As a result, PB and PBA materials find promising applications in catalysis, [46,47] photothermal therapy, [48] information storage, [37] sensor, [38] and energy storage and conversion. [17,[22][23][24][25][26][28][29][30][31][32] Nowadays, www.advmat.de www.advancedsciencenews.com structural traits and diverse chemical compositions, the electronic properties of the PB and PBA materials can be tailored by external stimulus, e.g., magnetic/electric field, [39,40] photoradiation, [41] temperature, [42] pressure, [43] and chemical modifications.…”