We report the synthesis of hyperbranched organic microwire (MW) networks comprising 1,4‐bis(pentafluorostyryl)benzene (10Ft) and 9,10‐bis(phenylethynyl)anthracene (BA) using a simple solution co‐assembly route. Pure 10Ft or BA assemblies cannot produce such complex MW networks; in contrast with a binary cocrystal of 10Ft and BA with a 2:1 molar ratio ((2:1)10Ft:BA), which is formed via intermolecular arene‐perfluoroarene (AP) interactions. A new generation of multiple MWs grow epitaxially on the previous generation of MWs to form MW arrays in which BA may also act as an intermediate product to facilitate the regeneration of (2:1)10Ft:BA. Highly aligned and well‐connected MW networks enable superior optical waveguiding ability. Moreover, a red‐emitting dopant, 5,12‐bis(phenylethynyl)naphthacene (BN) was incorporated into (2:1)10Ft:BA host MWs, giving light‐harvesting hierarchical MW networks via an energy‐transfer (ET) process. The realization of the hyperbranched MWs provides us with deep insight into the rational creation of complex branched arrays from functional organic cocrystals.

In contrast to well-studied amphiphilic block copolymers (BCPs) and π-stacked dyes, living assembly of hydrophobic π-conjugated materials has not yet been explored to date. Using a microspacing physical vapor transport (PVT) technique, the prefabricated microrods of organic semiconductors involving 9,10-dicyanoanthracene (DCA, A) or its binary alloy (B) can act as seeds to initiate living homoepitaxial growth from their ends, giving elongated microrods with controlled length. Red-green-red tricolor fluorescent microrod heterostructures with low dispersity are further realized by living heteroepitaxial growth of B microrod blocks on A seed microrod tips. Upon varying the growth sequence of each block, reverse triblock microrods are also accessible. Such a seed-induced living growth is applicable to triblock microrod heterostructures of more binary combinations as well as even more complex penta- and hepta-block heterostructures comprising A and B. By virtue of a convenient vapor-phase growth method, the present work demonstrates the generality of living assembly of π-conjugated materials.

Like well‐manicured trees in nature, hyperbranched nanotrees are generated by sequential growth of multiple generations of aligned branches on the trunks, giving efficient light absorption and trapping. In their Research Article on page 27046, Yilong Lei and co‐workers develop a solution co‐assembly strategy to access ordered binary and ternary hyperbranched microwires comprising arene‐perfluoroarene cocrystals, which display optical waveguiding and light‐harvesting abilities.

We report the synthesis of hyperbranched organic microwire (MW) networks comprising 1,4-bis(pentafluorostyryl)benzene (10Ft) and 9,10-bis(phenylethynyl)anthracene (BA) using as imple solution co-assembly route.P ure 10Ft or BA assemblies cannot produce such complex MW networks;in contrast with ab inary cocrystal of 10Ft and BA with a2 :1 molar ratio ((2:1)10Ft:BA), whichi sf ormed via intermolecular arene-perfluoroarene (AP) interactions.Anew generation of multiple MWs grow epitaxially on the previous generation of MWs to form MW arrays in which BA may also act as an intermediate product to facilitate the regeneration of (2:1)10Ft:BA. Highly aligned and well-connected MW networks enable superior optical waveguiding ability.M oreover, ar ed-emitting dopant, 5,12-bis(phenylethynyl)naphthacene (BN) was incorporated into (2:1)10Ft:BAh ost MWs,g iving light-harvesting hierarchical MW networks via an energytransfer (ET) process.T he realization of the hyperbranched MWs provides us with deep insight into the rational creation of complex branched arrays from functional organic cocrystals.

Based on microwave digestion and dry digestion, the concentrations of Si, S, Ca, Cr, Fe, Ni, Cu, Al, Mo, Sb, Ti, V, Y and Zn in carbon fiber were determined using inductively coupled plasma mass spectrometry (ICP-MS). Compare with the concentrations in the solution got by microwave digestion, the concentrations in the solution got by dry digestion are higher. And microwave digestion is more suitable for treatment of carbon fiber containing volatile elements than dry digestion.