Common use of Conclusions Clause in Contracts

Conclusions. In addition to the acetylenic transformations, leading to acetylene-based or benzenoid p-conjugated structures, the CuAAC reaction represents another powerful synthetic tool. Compared with other acetylenic reactions, a five-membered heteroaromatic ring is formed instead of an aromatic all-carbon ring. Employing its coordination and hydrogen- bond-accepting/-donating abilities, the triazole group brings new design opportunities; in addition to its heteroaromatic character, it can also serve as a functional building block. The conjugation- and function-related triazole-based materials, available to date, only started to appear few years ago; these examples, however, have highlighted the huge potential for new applications in different directions and opened a new sub-field within organic materials. We anticipate that this new class of materials may be applied in, for instance, sensors and responsive devices with well-defined tuneable (opto)electronic properties, and believe that this review will motivate future research in this field and add another brick on the road to carbon-rich functional materials. Acknowledgements Our thanks go to ▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇´ n ▇▇▇▇▇ and ▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇ Castriciano for their kind help, and to the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (Netherlands Organisation for Scientific Research, NWO), NanoNed, Vici (A.E.R.), The Council for the Chemical Sciences of the Netherlands Organisation for Scientific Research and the European ITNs (CHEXTAN, SUPERIOR and HIERARCHY) for financial support. Notes and references 1 ▇. ▇. ▇▇▇▇▇, ▇. ▇. ▇▇▇▇▇, ▇. ▇. ▇’▇▇▇▇▇, ▇. ▇. ▇▇▇▇ and R. E. ▇▇▇▇▇▇▇, Nature, 1985, 318, 162–163. 2 ▇. ▇▇▇▇▇▇▇▇▇, Nature, 1994, 369, 199–207. 3 J.-▇. ▇▇, ▇. ▇▇▇▇▇▇ and ▇. ▇▇¨ llen, Chem. Rev., 2007, 107, 718–747.